[SM-ANNOUNCE] Patch fixes SquirrelMail cross site scripting vulnerabilities [CAN-2005-1769] Jun 16 2005 02:23PM
Jonathan Angliss (jon squirrelmail org)
Hello All,

Several cross site scripting (XSS) vulnerabilties have been discovered
in SquirrelMail versions 1.4.0 - 1.4.4. These have been addressed in a
patch that can be found at [1]. We advise all our users to apply this
patch. We're also releasing SquirrelMail 1.4.5 release candidate 1
today. We expect version 1.4.5 to be out within two weeks from

The vulnerabilities are in two categories: the majority can be exploited
through URL manipulation, and some by sending a specially crafted email
to a victim. When done very carefully, this may allow for an attacker
to hijack the user's session.

We know that versions 1.4.0 to 1.4.3a are vulnerable to most of the
issues. The 1.2.x series is not supported anymore; we advise users of
that series to upgrade to 1.4.4 with the patch applied.

Credits: we would like to thank Martijn Brinkers who helped a lot in
finding these vulnerabilities, and Cor Bosman of XS4ALL who helped in
testing the proposed fixes.

[1] http://www.squirrelmail.org/security/issue/2005-06-15

Jonathan Angliss
<jon (at) squirrelmail (dot) org [email concealed]>

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