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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200501-39">
<title>SquirrelMail: Multiple vulnerabilities</title>
SquirrelMail fails to properly sanitize user input, which could lead to
arbitrary code execution and compromise webmail accounts.
<product type="ebuild">SquirrelMail</product>
<announced>January 28, 2005</announced>
<revised>January 28, 2005: 01</revised>
<package name="mail-client/squirrelmail" auto="yes" arch="*">
<unaffected range="ge">1.4.4</unaffected>
<vulnerable range="le">1.4.3a-r2</vulnerable>
SquirrelMail is a webmail package written in PHP. It supports IMAP
and SMTP and can optionally be installed with SQL support.
SquirrelMail fails to properly sanitize certain strings when
decoding specially-crafted strings, which can lead to PHP file
inclusion and XSS.
<li>Insufficient checking of incoming URLs
in prefs.php (CAN-2005-0075) and in webmail.php (CAN-2005-0103).</li>
<li>Insufficient escaping of integers in webmail.php
<impact type="high">
By sending a specially-crafted URL, an attacker can execute
arbitrary code from the local system with the permissions of the web
server. Furthermore by enticing a user to load a specially-crafted URL,
it is possible to display arbitrary remote web pages in Squirrelmail's
frameset and 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.
The arbitrary code execution is only possible with
"register_globals" set to "On". Gentoo ships PHP with
"register_globals" set to "Off" by default. There are no known
workarounds for the other issues at this time.
All SquirrelMail users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=mail-client/squirrelmail-1.4.4&quot;</code>
Note: Users with the vhosts USE flag set should manually use
webapp-config to finalize the update.
<uri link="">SquirrelMail Advisory</uri>
<uri link="">CAN-2005-0075</uri>
<uri link="">CAN-2005-0103</uri>
<uri link="">CAN-2005-0104</uri>
<metadata tag="submitter" timestamp="Tue, 25 Jan 2005 17:32:40 +0000">
<metadata tag="bugReady" timestamp="Fri, 28 Jan 2005 10:51:51 +0000">