OpenSSL 0.9.8i and earlier does not properly check the return value from the EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9155
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6380
http://www.vupen.com/english/advisories/2009/1338
http://www.vupen.com/english/advisories/2009/1297
http://www.vupen.com/english/advisories/2009/0913
http://www.vupen.com/english/advisories/2009/0904
http://www.vupen.com/english/advisories/2009/0558
http://www.vupen.com/english/advisories/2009/0362
http://www.vupen.com/english/advisories/2009/0289
http://www.vupen.com/english/advisories/2009/0040
http://www.vmware.com/security/advisories/VMSA-2009-0004.html
http://www.us-cert.gov/cas/techalerts/TA09-133A.html
http://www.securitytracker.com/id?1021523
http://www.securityfocus.com/bid/33150
http://www.securityfocus.com/archive/1/502322/100/0/threaded
http://www.securityfocus.com/archive/1/499827/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2009-0004.html
http://www.openssl.org/news/secadv_20090107.txt
http://www.ocert.org/advisories/ocert-2008-016.html
http://voodoo-circle.sourceforge.net/sa/sa-20090123-01.html
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=837653
http://support.avaya.com/elmodocs2/security/ASA-2009-038.htm
http://support.apple.com/kb/HT3549
http://sunsolve.sun.com/search/document.do?assetkey=1-66-250826-1
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.544796
http://security.gentoo.org/glsa/glsa-200902-02.xml
http://secunia.com/advisories/39005
http://secunia.com/advisories/35108
http://secunia.com/advisories/35074
http://secunia.com/advisories/34211
http://secunia.com/advisories/33765
http://secunia.com/advisories/33673
http://secunia.com/advisories/33557
http://secunia.com/advisories/33436
http://secunia.com/advisories/33394
http://secunia.com/advisories/33338
http://marc.info/?l=bugtraq&m=127678688104458&w=2
http://marc.info/?l=bugtraq&m=124277349419254&w=2
http://marc.info/?l=bugtraq&m=123859864430555&w=2
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00014.html
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00013.html
http://lists.apple.com/archives/security-announce/2009/May/msg00002.html