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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200501-39">
<title>SquirrelMail: Multiple vulnerabilities</title>
<synopsis>
SquirrelMail fails to properly sanitize user input, which could lead to
arbitrary code execution and compromise webmail accounts.
</synopsis>
<product type="ebuild">SquirrelMail</product>
<announced>January 28, 2005</announced>
<revised>January 28, 2005: 01</revised>
<bug>78116</bug>
<access>remote</access>
<affected>
<package name="mail-client/squirrelmail" auto="yes" arch="*">
<unaffected range="ge">1.4.4</unaffected>
<vulnerable range="le">1.4.3a-r2</vulnerable>
</package>
</affected>
<background>
<p>
SquirrelMail is a webmail package written in PHP. It supports IMAP
and SMTP and can optionally be installed with SQL support.
</p>
</background>
<description>
<p>
SquirrelMail fails to properly sanitize certain strings when
decoding specially-crafted strings, which can lead to PHP file
inclusion and XSS.
</p>
<ul>
<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
(CAN-2005-0104).</li>
</ul>
</description>
<impact type="high">
<p>
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.
</p>
</impact>
<workaround>
<p>
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.
</p>
</workaround>
<resolution>
<p>
All SquirrelMail users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/squirrelmail-1.4.4"</code>
<p>
Note: Users with the vhosts USE flag set should manually use
webapp-config to finalize the update.
</p>
</resolution>
<references>
<uri link="http://sourceforge.net/mailarchive/message.php?msg_id=10628451">SquirrelMail Advisory</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0075">CAN-2005-0075</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0103">CAN-2005-0103</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0104">CAN-2005-0104</uri>
</references>
<metadata tag="submitter" timestamp="Tue, 25 Jan 2005 17:32:40 +0000">
jaervosz
</metadata>
<metadata tag="bugReady" timestamp="Fri, 28 Jan 2005 10:51:51 +0000">
koon
</metadata>
</glsa>
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