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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>