From 2fb570abec6d07cee61332cf518703060514d3a0 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Tue, 24 Sep 2013 05:03:40 +0200
Subject: [PATCH] CVE-2013-4408:librpc: check for invalid frag_len within
 dcerpc_read_ncacn_packet_done()

Bug: https://bugzilla.samba.org/show_bug.cgi?id=10185

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
---
 librpc/rpc/dcerpc_util.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/librpc/rpc/dcerpc_util.c b/librpc/rpc/dcerpc_util.c
index 980b0709dba..c963da84ce3 100644
--- a/librpc/rpc/dcerpc_util.c
+++ b/librpc/rpc/dcerpc_util.c
@@ -292,6 +292,11 @@ static void dcerpc_read_ncacn_packet_done(struct tevent_req *subreq)
 		return;
 	}
 
+	if (state->pkt->frag_length != state->buffer.length) {
+		tevent_req_nterror(req, NT_STATUS_RPC_PROTOCOL_ERROR);
+		return;
+	}
+
 	tevent_req_done(req);
 }
 
-- 
2.34.1