CVE-2009-1957 Information

Description

charon/sa/ike_sa.c in the charon daemon in strongSWAN before 4.3.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an invalid IKE_SA_INIT request that triggers \an incomplete state\ followed by a CREATE_CHILD_SA request.

Reference

http://download.strongswan.org/CHANGES4.txt http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.patch http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.readme http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html http://secunia.com/advisories/35296 http://secunia.com/advisories/35685 http://secunia.com/advisories/36922 http://www.debian.org/security/2009/dsa-1899 http://www.securityfocus.com/bid/35178 https://lists.strongswan.org/pipermail/users/2009-May/003457.html