DSECRG-08-030.txt

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Digital Security Research Group [DSecRG] Advisory #DSECRG-08-030  
  
  
Application: Claroline eLearning and eWorking platform  
Versions Affected: 1.8.9  
Vendor URL: http://www.claroline.net/  
Bug: Multiple XSS, Phishing Through URL Redirection, Change User Password XSRF Vulnerability  
Exploits: YES  
Reported: 04.07.2008  
Vendor Response: 07.07.2008  
Solution: YES  
Date of Public Advisory: 18.07.2008  
Author: Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)  
  
  
  
Description  
***********  
  
Claroline system has multiple security vulnerabilities:  
  
1. Multiple Linked XSS  
2. Phishing Through URL Redirection  
3. Change User Password XSRF Vulnerability  
  
  
Details  
*******  
  
1. Multiple linked XSS vulnerabilities found. Attacker can inject XSS in URL string  
  
1.1 Linked XSS vulnerabilities found in scripts:  
  
claroline/announcements/announcements.php  
claroline/calendar/agenda.php  
claroline/course/index.php  
claroline/course_description/index.php  
claroline/document/document.php  
claroline/exercise/exercise.php  
claroline/group/group_space.php  
claroline/phpbb/newtopic.php  
claroline/phpbb/reply.php  
claroline/phpbb/viewtopic.php  
claroline/wiki/wiki.php  
claroline/work/work.php  
  
Attacker can inject XSS in URL string.  
  
Example:  
  
http://[server]/[installdir]/claroline/course/index.php?"><script>alert('DSecRG XSS')</script>   
http://[server]/[installdir]/claroline/phpbb/newtopic.php?"><script>alert('DSecRG XSS')</script>  
  
  
1.2 Linked XSS vulnerability found in claroline/document/rqmkhtml.php   
  
GET parameter "cwd"  
  
Example:  
  
http://[server]/[installdir]/claroline/document/rqmkhtml.php?cmd=rqMkHtml&cwd="><script>alert('DSecRG XSS')</script>  
  
---------------------------------------------------------------------  
  
  
2. Phishing Through URL Redirection  
  
Vulnerability found in script /claroline/redirector.php  
  
GET parameter "url"  
  
Example:  
  
http://[server]/[installdir]/claroline/redirector.php?url=http://evilsite.com  
  
---------------------------------------------------------------------  
  
  
3. Change User Password XSRF Vulnerability  
  
Previous password not required to set a new password.  
  
Using XSS vulnerabilities, attacker can change user password.  
  
  
Solution  
********  
  
Vendor fix this flaw on 16.07.2008. New version 1.8.10 can be downloaded here:  
  
http://downloads.sourceforge.net/claroline/claroline1810.tar.gz  
http://downloads.sourceforge.net/claroline/claroline1810.zip  
  
  
About  
*****  
  
Digital Security is leading IT security company in Russia, providing information security consulting, audit and penetration testing services, risk analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and PCI DSS standards. Digital Security Research Group focuses on web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website.  
  
  
Contact: research [at] dsec [dot] ru  
http://www.dsec.ru (in Russian)  
  
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