strongSwan before 5.1.2 allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon crash) via a crafted ID_DER_ASN1_DN ID payload.
http://www.securityfocus.com/bid/67212
http://www.debian.org/security/2014/dsa-2922
http://secunia.com/advisories/59864
http://lists.opensuse.org/opensuse-updates/2014-05/msg00066.html
http://lists.opensuse.org/opensuse-updates/2014-05/msg00064.html