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libosip2: add fix for CVE-2017-7853

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Patch copied from upstream:

https://git.savannah.gnu.org/cgit/osip.git/patch/?id=1ae06daf3b2375c34af23083394a6f010be24a45

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>
This commit is contained in:
Sebastian Kemper 2018-01-10 20:29:52 +01:00
parent b0e5bba218
commit 3df68b5445
2 changed files with 32 additions and 1 deletions
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2
libs/libosip2/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=libosip2
PKG_VERSION:=5.0.0
PKG_RELEASE:=1
PKG_RELEASE:=2
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=@GNU/osip

31
libs/libosip2/patches/01-CVE-2017-7853.patch Normal file
View file

@ -0,0 +1,31 @@
From 1ae06daf3b2375c34af23083394a6f010be24a45 Mon Sep 17 00:00:00 2001
From: Aymeric Moizard <amoizard@gmail.com>
Date: Tue, 21 Feb 2017 17:16:26 +0100
Subject: * fix bug report: sr #109265: SIP message body length underflow in
libosip2-4.1.0 https://savannah.gnu.org/support/?109265 also applicable
to current latest version
---
src/osipparser2/osip_message_parse.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/osipparser2/osip_message_parse.c b/src/osipparser2/osip_message_parse.c
index 1628c60..aa35446 100644
--- a/src/osipparser2/osip_message_parse.c
+++ b/src/osipparser2/osip_message_parse.c
@@ -784,6 +784,12 @@ msg_osip_body_parse (osip_message_t * sip, const char *start_of_buf, const char
if ('\n' == start_of_body[0] || '\r' == start_of_body[0])
start_of_body++;
+ /* if message body is empty or contains a single CR/LF */
+ if (end_of_body <= start_of_body) {
+ osip_free (sep_boundary);
+ return OSIP_SYNTAXERROR;
+ }
+
body_len = end_of_body - start_of_body;
/* Skip CR before end boundary. */
--
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