From b0a567640cf66f396de3fb4a827f9cf8a7ee0abb Mon Sep 17 00:00:00 2001
From: Leo Famulari <leo@famulari.name>
Date: Tue, 10 Jan 2017 15:27:44 -0500
Subject: gnu: cracklib: Fix buffer overflow.
* 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.
---
.../patches/cracklib-fix-buffer-overflow.patch | 39 ++++++++++++++++++++++
1 file changed, 39 insertions(+)
create mode 100644 gnu/packages/patches/cracklib-fix-buffer-overflow.patch
(limited to 'gnu/packages/patches/cracklib-fix-buffer-overflow.patch')
diff --git a/gnu/packages/patches/cracklib-fix-buffer-overflow.patch b/gnu/packages/patches/cracklib-fix-buffer-overflow.patch
new file mode 100644
index 0000000000..b1c990f282
--- /dev/null
+++ b/gnu/packages/patches/cracklib-fix-buffer-overflow.patch
@@ -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++)
--
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