<?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 "&gt;=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>
