nodejs/0003-c-ares-NAPTR-parser-out-of-bounds-access.patch
2017-06-28 11:00:13 +02:00

36 lines
1.1 KiB
Diff

From 15dfe22be278cb1f0194de0b0ab790ba9dc4fc33 Mon Sep 17 00:00:00 2001
From: Zuzana Svetlikova <zsvetlik@redhat.com>
Date: Fri, 23 Jun 2017 23:11:28 +0200
Subject: [PATCH] c-ares NAPTR parser out of bounds access
CVE: CVE-2017-1000381
Upstream bug: https://c-ares.haxx.se/adv_20170620.html
---
deps/cares/src/ares_parse_naptr_reply.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/deps/cares/src/ares_parse_naptr_reply.c b/deps/cares/src/ares_parse_naptr_reply.c
index 11634df984..717d355778 100644
--- a/deps/cares/src/ares_parse_naptr_reply.c
+++ b/deps/cares/src/ares_parse_naptr_reply.c
@@ -110,6 +110,12 @@ ares_parse_naptr_reply (const unsigned char *abuf, int alen,
status = ARES_EBADRESP;
break;
}
+ /* RR must contain at least 7 bytes = 2 x int16 + 3 x name */
+ if (rr_len < 7)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
/* Check if we are really looking at a NAPTR record */
if (rr_class == C_IN && rr_type == T_NAPTR)
@@ -185,4 +191,3 @@ ares_parse_naptr_reply (const unsigned char *abuf, int alen,
return ARES_SUCCESS;
}
-
--
2.13.1