Summary
=======

Bugzilla is a Web-based bug-tracking system, used by a large number of
software projects.

This advisory covers two security issues that have recently been
fixed in the Bugzilla code:

+ Some files stored on the web server are not correctly protected
  against external access and can be viewed from a web browser.

+ Restricting a bug to a group while moving the bug to another product
  has no effect if the group is not used by both products. The bug may
  become public if no other group restriction applies.

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


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

Issue 1
-------
Class:       Information leak
Versions:    all versions before 3.0.11, 3.2.6, 3.4.5, and 3.5.3
Description: Bugzilla allows web browsers to serve the contents of
             files in the CVS/, contrib/, docs/en/xml/, and t/
             directories, as well as the old-params.txt file.
             These files do not contain sensitive data by default, but
             custom installations may have added scripts or files into
             these directories which contain e.g. passwords or some 
             other sensitive information. We now forbird access to
             these directories from a web browser as a preventive
             measure.
References:  https://bugzilla.mozilla.org/show_bug.cgi?id=314871
             https://bugzilla.mozilla.org/show_bug.cgi?id=434801
CVE Number:  CVE-2009-3989

Issue 2
-------
Class:       Information leak
Versions:    3.3.1 to 3.4.4, 3.5.1, 3.5.2
Description: When moving a bug from one product to another, an  
             intermediate page is displayed letting you select the 
             groups the bug should be restricted to in the new
             product. However, a regression in the 3.4.x series
             made it ignore all groups which are not available in
             both products. As a workaround, you had to move the
             bug to the new product first and then restrict it to
             the desired groups, in two distinct steps, which 
             could make the bug temporarily public.
Reference:   https://bugzilla.mozilla.org/show_bug.cgi?id=532493
CVE Number:  CVE-2009-3387


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

The fixes for all of the security bugs mentioned in this advisory are
included in the 3.0.11, 3.2.6, 3.4.5, and 3.5.3 releases. Upgrading
to these releases will protect installations from possible exploits of
these issues.

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

  http://www.bugzilla.org/download/

Specific patches for each of the individual issues can be found on the
corresponding bug reports for each issue, at the URL given in the
reference for that issue in the list above.


Credits
=======

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

Max Kanat-Alexander
Frédéric Buclin
Reed Loden
Joel Peshkin

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

  http://www.bugzilla.org/

Comments and follow-ups can be directed to the mozilla.support.bugzilla
newsgroup or the support-bugzilla mailing list.
http://www.bugzilla.org/support/ has directions for accessing these
forums.