Bug#686455: unblock: pidgin-latex/1.4.4-2

[Elías Alejandro]

Package: release.debian.org
Severity: normal
User: release.debian....@packages.debian.org
Usertags: unblock

Please unblock package pidgin-latex

It adds an upstream patch which will be also available in 1.4.5 to fix:

01_security_issue.patch: Insuficient validation on blacklist wich could cause
                         send user information over messenger network.



--- pidgin-latex-1.4.4/debian/changelog 2011-07-07 10:15:03.000000000 -0500
+++ pidgin-latex-1.4.4/debian/changelog 2012-08-30 19:48:45.000000000 -0500
@@ -1,3 +1,11 @@
+pidgin-latex (1.4.4-2) unstable; urgency=low
+
+  * debian/patches/01_security_issue.patch: Added. (Closes: #685888)
+    + This fix insufficient validation of LaTeX code and avoid
+      access to user local information.
+
+ -- Elías Alejandro Año Mendoza <eal...@gmail.com>  Thu, 30 Aug 2012 20:39:08 
-0500
+
 pidgin-latex (1.4.4-1) unstable; urgency=low
 
   * Initial release (Closes: #520658, #609723)
diff -Nru pidgin-latex-1.4.4/debian/patches/01_security_issue.patch 
pidgin-latex-1.4.4/debian/patches/01_security_issue.patch
--- pidgin-latex-1.4.4/debian/patches/01_security_issue.patch   1969-12-31 
19:00:00.000000000 -0500
+++ pidgin-latex-1.4.4/debian/patches/01_security_issue.patch   2012-08-26 
16:48:19.000000000 -0500
@@ -0,0 +1,45 @@
+Description: pidgin-latex has a security issue to get into makeatletter-mode.
+ This patch fix insufficient validation of LaTeX code and avoid send
+ messages over a messenger network to a user local system account 
+ information.
+
+Author: Benjamin Moll <q...@users.sourceforge.net>
+Forwarded: no
+Last-Update: 2012-07-23 
+
+--- pidgin-latex-1.4.4.orig/LaTeX.c    2011-01-12 19:28:45.000000000 -0500
++++ pidgin-latex-1.4.4/LaTeX.c 2012-08-25 20:27:55.000000000 -0500
+@@ -36,6 +36,7 @@
+ #include <string.h>
+ #include <unistd.h>
+ #include <errno.h>
++#include <regex.h>
+ #include <sys/types.h>
+ 
+ #ifndef _WIN32
+@@ -321,14 +322,21 @@
+ static gboolean is_blacklisted(char *message)
+ {
+   char *not_secure[NB_BLACKLIST] = BLACKLIST;
++  int reti;
+   int i;
+   for (i = 0 ; i < NB_BLACKLIST ; i++)
+   {
+-    char *begin_not_secure = malloc((strlen(not_secure[i])+9)*sizeof(char));
+-    strcpy(begin_not_secure,"\\begin{");
++    regex_t regex;
++    char *begin_not_secure = malloc((strlen(not_secure[i])+18)*sizeof(char));
++    strcpy(begin_not_secure,"\\\\begin\\W*{\\W*");
+     strcat(begin_not_secure,not_secure[i]+0x01);
+-    strcat(begin_not_secure,"}");
+-    if (strstr(message, not_secure[i]) != NULL || strstr(message, 
begin_not_secure)) return TRUE;
++    strcat(begin_not_secure,"\\W*}");
++    reti = regcomp(&regex, begin_not_secure, 0);
++purple_debug_info("LaTeX", "RegEx-Comp: %s (%d)\n", begin_not_secure, reti);
++    reti = regexec(&regex, message, 0, NULL, 0);
++    regfree(&regex);
++purple_debug_info("LaTeX", "Blacklist: %s und %s (RegEx-Match: %d)\n", 
not_secure[i], begin_not_secure, reti);
++    if (strstr(message, not_secure[i]) != NULL || reti!=REG_NOMATCH) return 
TRUE;
+   }
+   return FALSE;
+ }
diff -Nru pidgin-latex-1.4.4/debian/patches/series 
pidgin-latex-1.4.4/debian/patches/series
--- pidgin-latex-1.4.4/debian/patches/series    1969-12-31 19:00:00.000000000 
-0500
+++ pidgin-latex-1.4.4/debian/patches/series    2012-08-26 16:48:19.000000000 
-0500
@@ -0,0 +1 @@
+01_security_issue.patch


unblock pidgin-latex/1.4.4-2

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 3.2.0-2-686-pae (SMP w/2 CPU cores)
Locale: LANG=es_PE.UTF-8, LC_CTYPE=es_PE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash


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