Contao URL "getPageIdFromURL()" Cross-Site Scripting Vulnerability


Description   Stefan Schurtz has discovered a vulnerability in Contao, which can be exploited by malicious people to conduct cross-site scripting attacks.
Certain input passed to the URL after index.php to the frontend is not properly sanitised in the "getPageIdFromURL()" function in system/modules/frontend/Frontend.php before being returned to the user when the automatic URL construction feature is used (e.g. "Article Teaser"). This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
The vulnerability is confirmed in version 2.10.1. Prior versions may also be affected.
     
Vulnerable Products   Vulnerable Software:
Contao 2.x
     
Solution   Update to version 2.10.2.
     
CVE  
     
References   SSCHADV2011-025:
http://www.rul3z.de/advisories/SSCHADV2011-025.txt
Contao Changelog:
http://www.contao.org/changelog.html
     
Vulnerability Manager Detection   No
     
IPS Protection  
ASQ Engine alarm Available Since
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XSS - Prevention - GET : suspicious 'style' attribute found in URL
3.2.0
XSS - Prevention - GET : suspicious 'img' tag found in URL
3.2.0
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3.2.0
XSS - Prevention - GET : cookie access attempt using script language found in URL
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XSS - Prevention - GET : suspicious 'embed' tag found in URL
3.2.0
XSS - Prevention - GET : suspicious 'object' tag found in URL
3.2.0
XSS - Phishing : suspicious 'form' tag found in URL
3.2.0
XSS - Prevention - GET : javascript code found in URL
3.2.0
XSS - Prevention - GET : evasion attempt using tag characters encoding in URL
3.2.0
XSS - Prevention - GET : suspicious 'style' tag found in URL
3.2.0
XSS - Phishing : suspicious 'link' tag found in URL
3.2.0
XSS - Prevention - GET : 'script' tag found in URL
3.2.0
XSS - Prevention - GET : 'location' javascript object found in URL
3.2.0
XSS - Prevention - GET : suspicious 'div' tag found in URL
3.2.0
     


 
 
 
 
 Risk level 
Low 

 Vulnerability First Public Report Date 
2011-10-12 

 Target Type 
Server 

 Possible exploit 
Remote