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