From: John Crispin <john@openwrt.org>
Date: Tue, 29 Jul 2014 12:18:52 +0000 (+0000)
Subject: ppp: fix a buffer overrun in the ms chap code
X-Git-Tag: reboot~6376
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=8d3f839da7387bcd14f809e80f7da20d0a5e6d29;p=openwrt%2Fstaging%2Fblogic.git

ppp: fix a buffer overrun in the ms chap code

https://dev.openwrt.org/ticket/17296

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 41882
---

diff --git a/package/network/services/ppp/patches/520-ms_chap_buffer_overrun.patch b/package/network/services/ppp/patches/520-ms_chap_buffer_overrun.patch
new file mode 100644
index 000000000000..acbf33b65a40
--- /dev/null
+++ b/package/network/services/ppp/patches/520-ms_chap_buffer_overrun.patch
@@ -0,0 +1,13 @@
+Index: ppp-2.4.6/pppd/chap_ms.c
+===================================================================
+--- ppp-2.4.6.orig/pppd/chap_ms.c	2014-07-29 00:38:03.073968867 +0100
++++ ppp-2.4.6/pppd/chap_ms.c	2014-07-29 00:41:52.897964689 +0100
+@@ -382,7 +382,7 @@
+ 		      unsigned char *private)
+ {
+ 	const struct chapms2_response_cache_entry *cache_entry;
+-	unsigned char auth_response[MS_AUTH_RESPONSE_LENGTH];
++	unsigned char auth_response[MS_AUTH_RESPONSE_LENGTH+1];
+ 
+ 	challenge++;	/* skip length, should be 16 */
+ 	*response++ = MS_CHAP2_RESPONSE_LEN;