Bugzilla 3.x directory access information disclosure

Advisory Content :

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.

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Bugzilla 3.x directory access information disclosure