From: Yue Tao <yue....@windriver.com> 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.
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-2338 Signed-off-by: Yue Tao <yue....@windriver.com> Signed-off-by: Roy Li <rongqing...@windriver.com> --- .../strongswan-5.0.0-5.1.2_reject_child_sa.patch | 36 ++++++++++++++++++++ .../recipes-support/strongswan/strongswan_5.1.1.bb | 1 + 2 files changed, 37 insertions(+) create mode 100644 meta-networking/recipes-support/strongswan/files/strongswan-5.0.0-5.1.2_reject_child_sa.patch diff --git a/meta-networking/recipes-support/strongswan/files/strongswan-5.0.0-5.1.2_reject_child_sa.patch b/meta-networking/recipes-support/strongswan/files/strongswan-5.0.0-5.1.2_reject_child_sa.patch new file mode 100644 index 0000000..ab95992 --- /dev/null +++ b/meta-networking/recipes-support/strongswan/files/strongswan-5.0.0-5.1.2_reject_child_sa.patch @@ -0,0 +1,36 @@ +From b980ba7757dcfedd756aa055b3271ea58cf85aa6 Mon Sep 17 00:00:00 2001 +From: Martin Willi <mar...@revosec.ch> +Date: Thu, 20 Feb 2014 16:08:43 +0100 +Subject: [PATCH] ikev2: Reject CREATE_CHILD_SA exchange on unestablished + IKE_SAs + +Prevents a responder peer to trick us into established state by starting +IKE_SA rekeying before the IKE_SA has been authenticated during IKE_AUTH. + +Fixes CVE-2014-2338 for 5.x versions of strongSwan. +--- + src/libcharon/sa/ikev2/task_manager_v2.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/src/libcharon/sa/ikev2/task_manager_v2.c b/src/libcharon/sa/ikev2/task_manager_v2.c +index ac3be90..a5252ab 100644 +--- a/src/libcharon/sa/ikev2/task_manager_v2.c ++++ b/src/libcharon/sa/ikev2/task_manager_v2.c +@@ -780,6 +780,15 @@ static status_t process_request(private_ + case CREATE_CHILD_SA: + { /* FIXME: we should prevent this on mediation connections */ + bool notify_found = FALSE, ts_found = FALSE; ++ ++ if (this->ike_sa->get_state(this->ike_sa) == IKE_CREATED || ++ this->ike_sa->get_state(this->ike_sa) == IKE_CONNECTING) ++ { ++ DBG1(DBG_IKE, "received CREATE_CHILD_SA request for " ++ "unestablished IKE_SA, rejected"); ++ return FAILED; ++ } ++ + enumerator = message->create_payload_enumerator(message); + while (enumerator->enumerate(enumerator, &payload)) + { +-- +1.8.1.2 diff --git a/meta-networking/recipes-support/strongswan/strongswan_5.1.1.bb b/meta-networking/recipes-support/strongswan/strongswan_5.1.1.bb index a2a2333..f8116e3 100644 --- a/meta-networking/recipes-support/strongswan/strongswan_5.1.1.bb +++ b/meta-networking/recipes-support/strongswan/strongswan_5.1.1.bb @@ -9,6 +9,7 @@ DEPENDS = "gmp openssl flex-native flex bison-native" SRC_URI = "http://download.strongswan.org/strongswan-${PV}.tar.bz2 \ file://fix-funtion-parameter.patch \ + file://strongswan-5.0.0-5.1.2_reject_child_sa.patch \ " SRC_URI[md5sum] = "e3af3d493d22286be3cd794533a8966a" -- 1.7.10.4 -- _______________________________________________ Openembedded-devel mailing list Openembedded-devel@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-devel
