The ASN.1 parser (pluto/asn1.c, libstrongswan/asn1/asn1.c, libstrongswan/asn1/asn1_parser.c) in (a) strongSwan 2.8 before 2.8.10, 4.2 before 4.2.16, and 4.3 before 4.3.2; and (b) openSwan 2.6 before 2.6.22 and 2.4 before 2.4.15 allows remote attackers to cause a denial of service (pluto IKE daemon crash) via an X.509 certificate with (1) crafted Relative Distinguished Names (RDNs), (2) a crafted UTCTIME string, or (3) a crafted GENERALIZEDTIME string.
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00337.html
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00264.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11079
http://www.vupen.com/english/advisories/2009/3354
http://www.vupen.com/english/advisories/2009/1829
http://www.vupen.com/english/advisories/2009/1706
http://www.vupen.com/english/advisories/2009/1639
http://www.securitytracker.com/id?1022428
http://www.securityfocus.com/bid/35452
http://www.redhat.com/support/errata/RHSA-2009-1138.html
http://www.ingate.com/Relnote.php?ver=481
http://www.debian.org/security/2009/dsa-1899
http://www.debian.org/security/2009/dsa-1898
http://up2date.astaro.com/2009/07/up2date_7404_released.html
http://secunia.com/advisories/37504
http://secunia.com/advisories/36950
http://secunia.com/advisories/36922
http://secunia.com/advisories/35804
http://secunia.com/advisories/35740
http://secunia.com/advisories/35698
http://secunia.com/advisories/35522
http://download.strongswan.org/CHANGES42.txt