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SquirrelMail: Encoded text XSS vulnerability

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200411-25 / SquirrelMail
Release Date November 17, 2004
Latest Revision May 22, 2006: 02
Impact low
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
mail-client/squirrelmail < 1.4.3a-r2 >= 1.4.3a-r2 All supported architectures

Related bugreports: #70739

Synopsis

Squirrelmail fails to properly sanitize user input, which could lead to a compromise of webmail accounts.

2.  Impact Information

Background

SquirrelMail is a webmail package written in PHP. It supports IMAP and SMTP, and can optionally be installed with SQL support.

Description

SquirrelMail fails to properly sanitize certain strings when decoding specially-crafted headers.

Impact

By enticing a user to read a specially-crafted e-mail, an attacker can execute arbitrary scripts running in the context of the victim's browser. This could lead to a compromise of the user's webmail account, cookie theft, etc.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All SquirrelMail users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/squirrelmail-1.4.3a-r2"

Note: Users with the vhosts USE flag set should manually use webapp-config to finalize the update.

4.  References



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Page updated November 17, 2004

Summary: This is a Gentoo Linux Security Advisory

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