OpenSSL 0.9.6 and 0.9.7 does not properly track the number of characters in certain ASN.1 inputs, which allows remote attackers to cause a denial of service (crash) via an SSL client certificate that causes OpenSSL to read past the end of a buffer when the long form is used.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4574
https://exchange.xforce.ibmcloud.com/vulnerabilities/43041
http://www.vupen.com/english/advisories/2006/3900
http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm
http://www.securityfocus.com/bid/8732
http://www.redhat.com/support/errata/RHSA-2003-292.html
http://www.redhat.com/support/errata/RHSA-2003-291.html
http://www.linuxsecurity.com/advisories/engarde_advisory-3693.html
http://www.kb.cert.org/vuls/id/380864
http://www.debian.org/security/2003/dsa-394
http://www.debian.org/security/2003/dsa-393
http://www.cert.org/advisories/CA-2003-26.html
http://www-1.ibm.com/support/docview.wss?uid=swg21247112
http://sunsolve.sun.com/search/document.do?assetkey=1-66-201029-1