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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201703-05">
<title>GNU Libtasn1: Denial of service</title>
<synopsis>A vulnerability in Libtasn1 allows remote attackers to cause a
Denial of Service condition.
</synopsis>
<product type="ebuild">libtasn1</product>
<announced>2017-03-28</announced>
<revised count="1">2017-03-28</revised>
<bug>579748</bug>
<access>remote</access>
<affected>
<package name="dev-libs/libtasn1" auto="yes" arch="*">
<unaffected range="ge">4.8</unaffected>
<vulnerable range="lt">4.8</vulnerable>
</package>
</affected>
<background>
<p>A library that provides Abstract Syntax Notation One (ASN.1, as
specified by the X.680 ITU-T recommendation) parsing and structures
management, and Distinguished Encoding Rules (DER, as per X.690) encoding
and decoding functions.
</p>
</background>
<description>
<p>Libtasn1 does not correctly handle certain malformed DER certificates.</p>
</description>
<impact type="normal">
<p>A remote attacker could entice a user or automated system to process a
specially crafted certificate using Libtasn1, resulting in a Denial of
Service condition.
</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All Libtasn1 users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libtasn1-4.8"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4008">CVE-2016-4008</uri>
</references>
<metadata tag="requester" timestamp="2017-02-22T11:00:00Z">b-man</metadata>
<metadata tag="submitter" timestamp="2017-03-28T02:54:28Z">whissi</metadata>
</glsa>
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