<?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>2012-09-25</announced> <revised count="1">2012-09-25</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="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1569">CVE-2012-1569</uri> </references> <metadata tag="requester" timestamp="2012-08-14T16:07:38Z"> keytoaster </metadata> <metadata tag="submitter" timestamp="2012-09-25T21:25:29Z">ackle</metadata> </glsa>