{"id":"CVE-2009-1957","details":"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followed by a CREATE_CHILD_SA request.","modified":"2026-01-27T04:09:49.803677Z","published":"2009-06-08T01:00:00Z","withdrawn":"2026-01-27T04:09:49.803677Z","references":[{"type":"ADVISORY","url":"http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.readme"},{"type":"ADVISORY","url":"http://secunia.com/advisories/35296"},{"type":"ADVISORY","url":"http://secunia.com/advisories/35685"},{"type":"ADVISORY","url":"http://secunia.com/advisories/36922"},{"type":"ADVISORY","url":"http://www.debian.org/security/2009/dsa-1899"},{"type":"FIX","url":"http://download.strongswan.org/CHANGES4.txt"},{"type":"FIX","url":"http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.patch"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html"},{"type":"WEB","url":"http://www.securityfocus.com/bid/35178"},{"type":"WEB","url":"https://lists.strongswan.org/pipermail/users/2009-May/003457.html"}],"schema_version":"1.7.3"}