glsa-200501-39.xml


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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>2005-01-28</announced>
  <revised count="01">2005-01-28</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 "&gt;=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="https://sourceforge.net/mailarchive/message.php?msg_id=10628451">SquirrelMail Advisory</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0075">CAN-2005-0075</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0103">CAN-2005-0103</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0104">CAN-2005-0104</uri>
  </references>
  <metadata tag="submitter" timestamp="2005-01-25T17:32:40Z">
    jaervosz
  </metadata>
  <metadata tag="bugReady" timestamp="2005-01-28T10:51:51Z">
    koon
  </metadata>
</glsa>