glsa-200803-25.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200803-25">
  <title>Dovecot: Multiple vulnerabilities</title>
  <synopsis>
    Two vulnerabilities in Dovecot allow for information disclosure and
    argument injection.
  </synopsis>
  <product type="ebuild">dovecot</product>
  <announced>2008-03-18</announced>
  <revised count="01">2008-03-18</revised>
  <bug>212336</bug>
  <bug>213030</bug>
  <access>remote</access>
  <affected>
    <package name="net-mail/dovecot" auto="yes" arch="*">
      <unaffected range="ge">1.0.13-r1</unaffected>
      <vulnerable range="lt">1.0.13-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Dovecot is a lightweight, fast and easy to configure IMAP and POP3 mail
    server.
    </p>
  </background>
  <description>
    <p>
    Dovecot uses the group configured via the "mail_extra_groups" setting,
    which should be used to create lockfiles in the /var/mail directory,
    when accessing arbitrary files (CVE-2008-1199). Dovecot does not escape
    TAB characters in passwords when saving them, which might allow for
    argument injection in blocking passdbs such as MySQL, PAM or shadow
    (CVE-2008-1218).
    </p>
  </description>
  <impact type="normal">
    <p>
    Remote attackers can exploit the first vulnerability to disclose
    sensitive data, such as the mail of other users, or modify files or
    directories that are writable by group via a symlink attack. Please
    note that the "mail_extra_groups" setting is set to the "mail" group by
    default when the "mbox" USE flag is enabled.
    </p>
    <p>
    The second vulnerability can be abused to inject arguments for internal
    fields. No exploitation vectors are known for this vulnerability that
    affect previously stable versions of Dovecot in Gentoo.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All Dovecot users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=net-mail/dovecot-1.0.13-r1"</code>
    <p>
    This version removes the "mail_extra_groups" option and introduces a
    "mail_privileged_group" setting which is handled safely.
    </p>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1199">CVE-2008-1199</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1218">CVE-2008-1218</uri>
  </references>
  <metadata tag="requester" timestamp="2008-03-11T18:35:36Z">
    keytoaster
  </metadata>
  <metadata tag="submitter" timestamp="2008-03-12T01:34:31Z">
    rbu
  </metadata>
  <metadata tag="bugReady" timestamp="2008-03-18T11:19:55Z">
    rbu
  </metadata>
</glsa>