IKEv2 in strongSwan 4.0.7 before 5.1.3 allows remote attackers to bypass authentication by rekeying an IKE_SA during (1) initiation or (2) re-authentication, which triggers the IKE_SA state to be set to established.
lists.opensuse.org/opensuse-security-announce/2014-04/msg00010.html
lists.opensuse.org/opensuse-updates/2014-05/msg00064.html
lists.opensuse.org/opensuse-updates/2014-05/msg00066.html
secunia.com/advisories/57823
www.debian.org/security/2014/dsa-2903
www.securityfocus.com/bid/66815
www.strongswan.org/blog/2014/04/14/strongswan-authentication-bypass-vulnerability-%28cve-2014-2338%29.html