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 WebMod "auth.w" Cross-Site Scripting Vulnerability

Tuesday, 16 October 2007

Nemessis has reported a vulnerability in WebMod, which can be exploited by malicious people to conduct cross-site scripting attacks.

Input passed to the "redir" parameter in auth.w is not properly sanitised before being returned to the user. 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 reported in version 0.48. Other versions may also be affected.

Solution:
Edit the source code to ensure that input is properly sanitised.

Provided and/or discovered by:
Nemessis

Original advisory:
http://secunia.com/advisories/27245/



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