WebCT Discussion Board HTML Injection Vulnerability

Bugtraq ID:	13101
Class:	Input Validation Error
CVE:	CVE-2005-1076
Remote:	Yes
Local:	No
Published:	Apr 11 2005 12:00AM
Updated:	Jul 12 2009 12:56PM
Credit:	Discovery of this vulnerability is credited to <[email protected]>.
Vulnerable:	WebCT WebCT Campus Edition 4.1
Not Vulnerable:

WebCT Discussion Board HTML Injection Vulnerability

WebCT is reportedly affected by an HTML injection vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input prior to using it in dynamically generated content.

Attacker-supplied HTML and script code would be able to access properties of the site, potentially allowing for theft of cookie-based authentication credentials. An attacker could also exploit this issue to control how the site is rendered to the user; other attacks are also possible.

This issue is reported to affect WebCT Version 4.1; other versions may also be affected.

WebCT Discussion Board HTML Injection Vulnerability

No exploit is required.

The following proof of concept demonstrates a message field body suitable to exploit the vulnerability:

</pre><table background=java	script:alert("XSS Warning")>
</table>

WebCT Discussion Board HTML Injection Vulnerability

Solution:
The vendor has issued an advisory describing how to prevent this issue, please see the referenced advisory for further details.

WebCT Discussion Board HTML Injection Vulnerability

References:

• WebCT Homepage (WebCT)
  
• WebCT Support Bulletin (WebCT)
  
• WebCT 4.1 vulnerable to XSS attacks ()