CVE-2009-1958 Information

Description

charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL checks for TSi and TSr payloads which allows remote attackers to cause a denial of service via an IKE_AUTH request without a (1) TSi or (2) TSr traffic selector.

Reference

http://download.strongswan.org/CHANGES4.txt http://download.strongswan.org/patches/04_swapped_ts_check_patch/strongswan-4.x.x._swapped_ts_check.patch http://download.strongswan.org/patches/04_swapped_ts_check_patch/strongswan-4.x.x._swapped_ts_check.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