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gnu: cracklib: Fix buffer overflow.

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* gnu/packages/patches/cracklib-fix-buffer-overflow.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/password-utils.scm (cracklib)[source]: Use it.
This commit is contained in:
Leo Famulari 2017-01-10 15:27:44 -05:00
parent 4b96149d8b
commit b0a567640c
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GPG key ID: 2646FA30BACA7F08
3 changed files with 42 additions and 1 deletions
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1
gnu/local.mk
View file

@ -511,6 +511,7 @@ dist_patch_DATA = \
%D%/packages/patches/cpio-CVE-2016-2037.patch \
%D%/packages/patches/cpufrequtils-fix-aclocal.patch \
%D%/packages/patches/cracklib-CVE-2016-6318.patch \
%D%/packages/patches/cracklib-fix-buffer-overflow.patch \
%D%/packages/patches/crda-optional-gcrypt.patch \
%D%/packages/patches/crossmap-allow-system-pysam.patch \
%D%/packages/patches/csound-header-ordering.patch \

3
gnu/packages/password-utils.scm
View file

@ -173,7 +173,8 @@ (define-public cracklib
(uri (string-append "https://github.com/cracklib/cracklib/"
"releases/download/" name "-" version "/"
name "-" version ".tar.gz"))
(patches (search-patches "cracklib-CVE-2016-6318.patch"))
(patches (search-patches "cracklib-CVE-2016-6318.patch"
"cracklib-fix-buffer-overflow.patch"))
(sha256
(base32
"0hrkb0prf7n92w6rxgq0ilzkk6rkhpys2cfqkrbzswp27na7dkqp"))))

39
gnu/packages/patches/cracklib-fix-buffer-overflow.patch Normal file
View file

@ -0,0 +1,39 @@
Fix buffer overflow processing long words in Mangle().
Patch adpated from upstream commit, omitting changes to 'NEWS':
https://github.com/cracklib/cracklib/commit/33d7fa4585247cd2247a1ffa032ad245836c6edb
From 33d7fa4585247cd2247a1ffa032ad245836c6edb Mon Sep 17 00:00:00 2001
From: Jan Dittberner <jan@dittberner.info>
Date: Thu, 25 Aug 2016 17:17:53 +0200
Subject: [PATCH] Fix a buffer overflow processing long words
A buffer overflow processing long words has been discovered. This commit
applies the patch from
https://build.opensuse.org/package/view_file/Base:System/cracklib/0004-overflow-processing-long-words.patch
by Howard Guo.
See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=835386 and
http://www.openwall.com/lists/oss-security/2016/08/23/8
---
src/NEWS | 1 +
src/lib/rules.c | 5 ++---
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/lib/rules.c b/src/lib/rules.c
index d193cc0..3a2aa46 100644
--- a/lib/rules.c
+++ b/lib/rules.c
@@ -434,9 +434,8 @@ Mangle(input, control) /* returns a pointer to a controlled Mangle */
{
int limit;
register char *ptr;
- static char area[STRINGSIZE];
- char area2[STRINGSIZE];
- area[0] = '\0';
+ static char area[STRINGSIZE * 2] = {0};
+ char area2[STRINGSIZE * 2] = {0};
strcpy(area, input);
for (ptr = control; *ptr; ptr++)