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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201612-44">
<title>Roundcube: Arbitrary code execution</title>
<synopsis>A vulnerability in Roundcube could potentially lead to arbitrary
code execution.
</synopsis>
<product type="ebuild">roundcube</product>
<announced>2016-12-24</announced>
<revised count="1">2016-12-24</revised>
<bug>601410</bug>
<access>remote</access>
<affected>
<package name="mail-client/roundcube" auto="yes" arch="*">
<unaffected range="ge">1.2.3</unaffected>
<vulnerable range="lt">1.2.3</vulnerable>
</package>
</affected>
<background>
<p>Free and open source webmail software for the masses, written in PHP.</p>
</background>
<description>
<p>Roundcube, when no SMTP server is configured and the sendmail program is
enabled, does not properly restrict the use of custom envelope-from
addresses on the sendmail command line.
</p>
</description>
<impact type="normal">
<p>An authenticated remote attacker could possibly execute arbitrary code
with the privileges of the process, or cause a Denial of Service
condition.
</p>
</impact>
<workaround>
<p>Don’t use a MTA (Mail Transfer Agent) in conjunction with Roundcube
which implements sendmail’s “-O” or “-X” parameter, or
configure Roundcube to use a SMTP server as recommended by upstream.
</p>
</workaround>
<resolution>
<p>All Roundcube users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/roundcube-1.2.3"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-9920">CVE-2016-9920</uri>
</references>
<metadata tag="requester" timestamp="2016-12-23T15:26:48Z">whissi</metadata>
<metadata tag="submitter" timestamp="2016-12-24T06:42:27Z">whissi</metadata>
</glsa>
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