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-rw-r--r--src/libcharon/sa/ike_sa.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/libcharon/sa/ike_sa.c b/src/libcharon/sa/ike_sa.c
index 000c3e539..5916116e5 100644
--- a/src/libcharon/sa/ike_sa.c
+++ b/src/libcharon/sa/ike_sa.c
@@ -1117,6 +1117,16 @@ METHOD(ike_sa_t, process_message, status_t,
{ /* do not handle messages in passive state */
return FAILED;
}
+ if (message->get_major_version(message) != this->version)
+ {
+ DBG1(DBG_IKE, "ignoring %N IKEv%u exchange on %N SA",
+ exchange_type_names, message->get_exchange_type(message),
+ message->get_major_version(message),
+ ike_version_names, this->version);
+ /* TODO-IKEv1: fall back to IKEv1 if we receive an IKEv1
+ * INVALID_MAJOR_VERSION on an IKEv2 SA. */
+ return FAILED;
+ }
status = this->task_manager->process_message(this->task_manager, message);
if (this->flush_auth_cfg && this->state == IKE_ESTABLISHED)
{