Gossamer Threads Links User.CGI Cross-Site Scripting Vulnerability

Bugtraq ID:	13484
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	May 04 2005 12:00AM
Updated:	May 04 2005 12:00AM
Credit:	Nathan House <[email protected]> is credited with the discovery of this vulnerability.
Vulnerable:	Gossamer Threads Links-SQL 3.0 Gossamer Threads Links 2.2 .x Gossamer Threads Links 2.x
Not Vulnerable:

Gossamer Threads Links User.CGI Cross-Site Scripting Vulnerability

Gossamer Threads Links is prone to a cross-site scripting vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input.

An attacker may leverage this issue to have arbitrary script code executed in the browser of an unsuspecting user. This may facilitate the theft of cookie-based authentication credentials as well as other attacks.

Links versions 2.x, and 2.2.x, as well as Links-SQL version 3.0 are all reported vulnerable to this issue.

Gossamer Threads Links User.CGI Cross-Site Scripting Vulnerability

No exploit is required.

The following proof of concept examples are available:
http://www.example.com/user.cgi?url=">&lt;script&gt;alert("XSS Vulnerability")&lt;/script&gt;<"&from=rate
http://www.example.com/user.cgi?url="><iframe%20src="http://www.example2.com/linksql.html"%20scrolling="No"%20align="MIDDLE"%20width="100%"%20height
+="3000"%20frameborder="No"></iframe><!--&from=rate

Gossamer Threads Links User.CGI Cross-Site Scripting Vulnerability

Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Gossamer Threads Links User.CGI Cross-Site Scripting Vulnerability

References:

• Links-SQL Home Page (Gossamer Threads)
  
• Gossamer Threads Links SQL login XSS Vulnerability (Nathan House )