glsa-201709-20.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201709-20">
  <title>Postfix: Privilege escalation</title>
  <synopsis>A vulnerability in Postfix may allow local users to gain root
    privileges.
    
  </synopsis>
  <product type="ebuild">postfix</product>
  <announced>2017-09-24</announced>
  <revised count="1">2017-09-24</revised>
  <bug>621882</bug>
  <access>local</access>
  <affected>
    <package name="mail-mta/postfix" auto="yes" arch="*">
      <unaffected range="ge">3.1.6</unaffected>
      <vulnerable range="lt">3.1.6</vulnerable>
    </package>
  </affected>
  <background>
    <p>Postfix is a mail server and an alternative to the widely-used Sendmail
      program.
    </p>
  </background>
  <description>
    <p>By default, Berkeley DB reads a DB_CONFIG configuration file from the
      current working directory. This is an undocumented behavior.
    </p>
  </description>
  <impact type="high">
    <p>A local attacker, by using a specially crafted DG_CONFIG file, could
      possibly escalate privileges to the root group.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Postfix users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=mail-mta/postfix-3.1.6"
    </code>
  </resolution>
  <references>
    <uri link="https://www.postfix.org/announcements/postfix-3.2.2.html">Postfix
      Official Announce
    </uri>
  </references>
  <metadata tag="requester" timestamp="2017-09-21T15:43:52Z">chrisadr</metadata>
  <metadata tag="submitter" timestamp="2017-09-24T15:51:13Z">chrisadr</metadata>
</glsa>