strongSwan 4.5.x through 5.2.x before 5.2.1 allows remote attackers to cause a denial of service (invalid pointer dereference) via a crafted IKEv2 Key Exchange (KE) message with Diffie-Hellman (DH) group 1025.
http://www.ubuntu.com/usn/USN-2450-1
http://www.securityfocus.com/bid/71894
http://www.debian.org/security/2015/dsa-3118
http://strongswan.org/blog/2015/01/05/strongswan-5.2.2-released.html
http://secunia.com/advisories/62663
http://secunia.com/advisories/62095
http://secunia.com/advisories/62083
http://secunia.com/advisories/62071
http://lists.opensuse.org/opensuse-updates/2015-01/msg00054.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153825.html