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SquirrelMail Encoded Headers Script Insertion Vulnerability
Secunia Advisory: SA13155
Release Date: 2004-11-11
Last Update: 2004-11-18
Popularity: 10,257 views

Critical:
Moderately critical
Impact: Cross Site Scripting
Where: From remote
Solution Status: Vendor Patch

Software:SquirrelMail 1.x

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CVE reference:CVE-2004-1036


Description:
Joost Pol has reported a vulnerability in SquirrelMail, which can be exploited by malicious people to conduct script insertion attacks.

The vulnerability is caused due to an input validation error in the "decodeHeader()" function in "mime.php" when processing encoded text in headers. This can be exploited to inject arbitrary HTML and script code, which will be executed in a user's browser session in context of a vulnerable site.

The vulnerability has been reported in the following versions:
* SquirrelMail 1.4.3a and prior
* SquirrelMail 1.5.1-cvs before 23rd October 2004

Solution:
Apply patch for version 1.4.3a:
http://prdownloads.sourceforge.net/squirrelmail/sm143a-xss.diff?download

Provided and/or discovered by:
Joost Pol

Changelog:
2004-11-18: Added CVE reference.


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