3.2.1, 3.0.7, and 3.3.2 Security Advisory

Tuesday, Feb 3rd, 2009

Summary
=======

Bugzilla is a Web-based bug-tracking system used by a large number of
software projects. The following security issue has been discovered
in Bugzilla:

* Bugzilla 3.2.1, 3.0.7, and 3.3.2, when running under mod_perl,
  generated insufficiently random numbers, resulting in all random
  tokens being the same, all CSRF protection being defeated, and the
  new attachment_base functionality being compromised. Only these
  releases were affected--earlier releases are not affected.

All affected installations are encouraged to upgrade as soon as
possible.


Vulnerability Details
=====================

Class:       Insufficiently Random Numbers
Affected:    3.2.1, 3.0.7, and 3.3.2
Fixed In:    3.2.2, 3.0.8, 3.3.3
Description: Bugzilla was calling srand() at compile time. Under
             mod_perl, this led to all Apache children having the same
             random seed, meaning that they all generated identical
             "random" strings instead of actually random strings.
             
             This means that all tokens were highly predictable, all
             CSRF protection was easily circumvented, and any
             installation using the new attachment_base functionality
             could possibly have any private attachment viewed without
             the user even logging in.
             
             Versions before 3.2.1, 3.0.7, and 3.3.2 were not
             affected. Installations that are not using mod_perl
             for Bugzilla are not affected.
References:  https://bugzilla.mozilla.org/show_bug.cgi?id=476594


Vulnerability Solutions
=======================

The fix for this issue is included in the 
releases. Upgrading to a release with the relevant fix will
protect your installation from possible exploits of this issue.

If you are unable to upgrade but would like to patch just the security
vulnerability, there are patches available for the issue at the
"References" URL.

Full release downloads, patches to upgrade Bugzilla from previous
versions, and git upgrade instructions are available at:

  https://www.bugzilla.org/download/


Credits
=======

The Bugzilla team wish to thank the following people for their
assistance in locating, advising us of, and assisting us to fix this
issue:


Reporter: Max Kanat-Alexander
Fixed by: Philippe M. Chiasson, Dave Miller

General information about the Bugzilla bug-tracking system can be found
at:

  https://www.bugzilla.org/

Comments and follow-ups can be directed to the support-bugzilla mailing list.
https://www.bugzilla.org/support/ has directions for accessing this forum.