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mcrypt: rediff CVE-2012-4527 to fix issue with old patch versions

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Fixes http://autobuild.buildroot.org/results/e648bfb37051c3b73712d2c7881193e9376f2812/

patch 2.5.9 (but not E.G. 2.6.1) had problems with the upstream CVE patch,
so rediff it to make it work.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Peter Korsgaard 2013-01-14 23:44:54 +01:00
parent a066f31a05
commit 6ff753f2a8
1 changed files with 20 additions and 29 deletions
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49
package/mcrypt/mcrypt-CVE-2012-4527.patch
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@ -1,32 +1,23 @@
Description: [CVE-2012-4527] Stack-based buffer overflow with long file names Fix for CVE-2012-4527.
. Authored by Attila Bogar and Jean-Michel Vourgère <jmv_deb@nirgal.com>
A buffer overflow in mcrypt version 2.6.8 and earlier due to long filenames.
If a user were tricked into attempting to encrypt/decrypt specially crafted Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
long filename(s), this flaw would cause a stack-based buffer overflow that
could potentially lead to arbitrary code execution. diff -Nura mcrypt-2.6.8.orig/src/mcrypt.c mcrypt-2.6.8/src/mcrypt.c
. --- mcrypt-2.6.8.orig/src/mcrypt.c 2013-01-14 19:15:49.465925072 -0300
Note that this is caught by FORTIFY_SOURCE, which makes this a crash-only +++ mcrypt-2.6.8/src/mcrypt.c 2013-01-14 19:28:13.711478000 -0300
bug on wheezy. @@ -44,7 +44,9 @@
Author: Attila Bogar, Jean-Michel Vourgère <jmv_deb@nirgal.com> static char rcsid[] =
Origin: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-4527 "$Id: mcrypt.c,v 1.2 2007/11/07 17:10:21 nmav Exp $";
Bug: CVE-2012-4527
Bug-Debian: http://bugs.debian.org/690924
Forwarded: no
Last-Update: 2012-11-01
Index: mcrypt-2.6.8/src/mcrypt.c
===================================================================
--- mcrypt-2.6.8.orig/src/mcrypt.c
+++ mcrypt-2.6.8/src/mcrypt.c
@@ -41,4 +41,6 @@
-char tmperr[128];
+/* Temporary error message can contain one file name and 1k of text */ +/* Temporary error message can contain one file name and 1k of text */
+#define ERRWIDTH ((PATH_MAX)+1024) +#define ERRWIDTH ((PATH_MAX)+1024)
-char tmperr[128];
+char tmperr[ERRWIDTH]; +char tmperr[ERRWIDTH];
unsigned int stream_flag = FALSE; unsigned int stream_flag = FALSE;
char *keymode = NULL; char *keymode = NULL;
char *mode = NULL; char *mode = NULL;
@@ -482,7 +485,7 @@ @@ -482,7 +484,7 @@
#ifdef HAVE_STAT #ifdef HAVE_STAT
if (stream_flag == FALSE) { if (stream_flag == FALSE) {
if (is_normal_file(file[i]) == FALSE) { if (is_normal_file(file[i]) == FALSE) {
@ -35,7 +26,7 @@ Index: mcrypt-2.6.8/src/mcrypt.c
_ _
("%s: %s is not a regular file. Skipping...\n"), ("%s: %s is not a regular file. Skipping...\n"),
program_name, file[i]); program_name, file[i]);
@@ -501,7 +504,7 @@ @@ -501,7 +503,7 @@
dinfile = file[i]; dinfile = file[i];
if ((isatty(fileno((FILE *) (stdin))) == 1) if ((isatty(fileno((FILE *) (stdin))) == 1)
&& (stream_flag == TRUE) && (force == 0)) { /* not a tty */ && (stream_flag == TRUE) && (force == 0)) { /* not a tty */
@ -44,7 +35,7 @@ Index: mcrypt-2.6.8/src/mcrypt.c
_ _
("%s: Encrypted data will not be read from a terminal.\n"), ("%s: Encrypted data will not be read from a terminal.\n"),
program_name); program_name);
@@ -520,7 +523,7 @@ @@ -520,7 +522,7 @@
einfile = file[i]; einfile = file[i];
if ((isatty(fileno((FILE *) (stdout))) == 1) if ((isatty(fileno((FILE *) (stdout))) == 1)
&& (stream_flag == TRUE) && (force == 0)) { /* not a tty */ && (stream_flag == TRUE) && (force == 0)) { /* not a tty */
@ -53,7 +44,7 @@ Index: mcrypt-2.6.8/src/mcrypt.c
_ _
("%s: Encrypted data will not be written to a terminal.\n"), ("%s: Encrypted data will not be written to a terminal.\n"),
program_name); program_name);
@@ -544,7 +547,7 @@ @@ -544,7 +546,7 @@
strcpy(outfile, einfile); strcpy(outfile, einfile);
/* if file has already the .nc ignore it */ /* if file has already the .nc ignore it */
if (strstr(outfile, ".nc") != NULL) { if (strstr(outfile, ".nc") != NULL) {
@ -62,7 +53,7 @@ Index: mcrypt-2.6.8/src/mcrypt.c
_ _
("%s: file %s has the .nc suffix... skipping...\n"), ("%s: file %s has the .nc suffix... skipping...\n"),
program_name, outfile); program_name, outfile);
@@ -590,10 +593,10 @@ @@ -590,10 +592,10 @@
if (x == 0) { if (x == 0) {
if (stream_flag == FALSE) { if (stream_flag == FALSE) {
@ -75,7 +66,7 @@ Index: mcrypt-2.6.8/src/mcrypt.c
err_warn(tmperr); err_warn(tmperr);
} }
#ifdef HAVE_STAT #ifdef HAVE_STAT
@@ -610,7 +613,7 @@ @@ -610,7 +612,7 @@
} else { } else {
if (stream_flag == FALSE) { if (stream_flag == FALSE) {
@ -84,7 +75,7 @@ Index: mcrypt-2.6.8/src/mcrypt.c
_ _
("File %s was NOT decrypted successfully.\n"), ("File %s was NOT decrypted successfully.\n"),
dinfile); dinfile);
@@ -636,10 +639,10 @@ @@ -636,10 +638,10 @@
if (x == 0) { if (x == 0) {
if (stream_flag == FALSE) { if (stream_flag == FALSE) {
@ -97,7 +88,7 @@ Index: mcrypt-2.6.8/src/mcrypt.c
err_warn(tmperr); err_warn(tmperr);
} }
#ifdef HAVE_STAT #ifdef HAVE_STAT
@@ -655,7 +658,7 @@ @@ -655,7 +657,7 @@
} else { } else {
if (stream_flag == FALSE) { if (stream_flag == FALSE) {