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From 3dbc2e06ad487862c2fcc64d4891ff8aeb254bad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim=20R=C3=BChsen?= <tim.ruehsen@gmx.de>
Date: Fri, 20 Oct 2017 10:59:38 +0200
Subject: [PATCH 1/2] Fix stack overflow in HTTP protocol handling
(CVE-2017-13089)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
* src/http.c (skip_short_body): Return error on negative chunk size
Reported-by: Antti Levomäki, Christian Jalio, Joonas Pihlaja from Forcepoint
Reported-by: Juhani Eronen from Finnish National Cyber Security Centre
---
src/http.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/http.c b/src/http.c
index 55367688..dc318231 100644
--- a/src/http.c
+++ b/src/http.c
@@ -973,6 +973,9 @@ skip_short_body (int fd, wgint contlen, bool chunked)
remaining_chunk_size = strtol (line, &endl, 16);
xfree (line);
+ if (remaining_chunk_size < 0)
+ return false;
+
if (remaining_chunk_size == 0)
{
line = fd_read_line (fd);
--
2.15.0.rc1
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