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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201209-12">
<title>Libtasn1: Denial of Service</title>
<synopsis>A vulnerability in Libtasn1 might cause a Denial of Service
condition.
</synopsis>
<product type="ebuild">libtasn1</product>
<announced>September 25, 2012</announced>
<revised>September 25, 2012: 1</revised>
<bug>409031</bug>
<access>remote</access>
<affected>
<package name="dev-libs/libtasn1" auto="yes" arch="*">
<unaffected range="ge">2.12</unaffected>
<vulnerable range="lt">2.12</vulnerable>
</package>
</affected>
<background>
<p>Libtasn1 is a library used to parse ASN.1 (Abstract Syntax Notation One)
objects, and perform DER (Distinguished Encoding Rules) decoding.
</p>
</background>
<description>
<p>Libtasn1 does not properly handle length fields when performing DER
decoding.
</p>
</description>
<impact type="normal">
<p>A remote attacker could entice a user to open a specially crafted
DER-encoded object in an application linked against Libtasn1, possibly
resulting in Denial of Service.
</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/libtasn1-2.12"
</code>
<p>Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying some of these packages.
</p>
</resolution>
<references>
<uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1569">CVE-2012-1569</uri>
</references>
<metadata tag="requester" timestamp="Tue, 14 Aug 2012 16:07:38 +0000">
keytoaster
</metadata>
<metadata tag="submitter" timestamp="Tue, 25 Sep 2012 21:25:29 +0000">ackle</metadata>
</glsa>
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