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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201612-25">
<title>CrackLib: Buffer overflow</title>
<synopsis>A vulnerability in CrackLib could lead to the execution of
arbitrary code.
</synopsis>
<product type="ebuild">cracklib</product>
<announced>December 08, 2016</announced>
<revised>December 08, 2016: 1</revised>
<bug>591456</bug>
<access>local</access>
<affected>
<package name="sys-libs/cracklib" auto="yes" arch="*">
<unaffected range="ge">2.9.6-r1</unaffected>
<vulnerable range="lt">2.9.6-r1</vulnerable>
</package>
</affected>
<background>
<p>CrackLib is a library used to enforce strong passwords by comparing user
selected passwords to words in chosen word lists.
</p>
</background>
<description>
<p>A stack-based buffer overflow was discovered in the FascistGecosUser
function of lib/fascist.c.
</p>
</description>
<impact type="normal">
<p>A local attacker could set a specially crafted GECOS field value in
“/etc/passwd”; possibly resulting in the execution of arbitrary code
with the privileges of the process, a Denial of Service condition, or the
escalation of privileges.
</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All CrackLib users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-libs/cracklib-2.9.6-r1"
</code>
</resolution>
<references>
<uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6318">CVE-2016-6318</uri>
</references>
<metadata tag="requester" timestamp="Thu, 31 Dec 2015 02:46:03 +0000">
BlueKnight
</metadata>
<metadata tag="submitter" timestamp="Thu, 08 Dec 2016 13:55:10 +0000">whissi</metadata>
</glsa>
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