1 files changed, 5 insertions, 0 deletions
diff --git a/src/kdc/do_as_req.c b/src/kdc/do_as_req.c
index b183dcfc7..39242979a 100644
--- a/src/kdc/do_as_req.c
+++ b/src/kdc/do_as_req.c
@@ -139,6 +139,11 @@ process_as_req(krb5_kdc_req *request, krb5_data *req_pkt,
     session_key.contents = 0;
     enc_tkt_reply.authorization_data = NULL;
 
+    if (request->msg_type != KRB5_AS_REQ) {
+        status = "msg_type mismatch";
+        errcode = KRB5_BADMSGTYPE;
+        goto errout;
+    }
     errcode = kdc_make_rstate(&state);
     if (errcode != 0) {
         status = "constructing state";