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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
lede-17.01
John Crispin 2014-07-29 12:18:52 +00:00
parent 5fa9048011
commit 8d3f839da7
1 changed files with 13 additions and 0 deletions
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13
package/network/services/ppp/patches/520-ms_chap_buffer_overrun.patch Normal file
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@ -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;