5.0.1, 4.4.10, and 4.2.15 Security Advisory

Tuesday, Dec 22nd, 2015

Summary
=======

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

* Unfiltered HTML injected into a dependency graph could be used to
  create a cross-site scripting attack.

* Some web browsers incorrectly parse CSV files as valid JavaScript
  code which could lead to data leak.

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


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

Class:       Cross-Site Scripting
Affected:    Bugzilla 2.6 to 4.2.15, 4.3.1 to 4.4.10, 4.5.1 to 5.0.1
Fixed In:    4.2.16, 4.4.11, 5.0.2
Description: During the generation of a dependency graph, the code for
             the HTML image map is generated locally if a local dot
             installation is used. With escaped HTML characters in a bug
             summary, it is possible to inject unfiltered HTML code in
             the map file which the CreateImagemap function generates.
             This could be used for a cross-site scripting attack.
References:  https://bugzilla.mozilla.org/show_bug.cgi?id=1221518
CVE Number:  CVE-2015-8508


Class:       Information Leak
Affected:    Bugzilla 2.17.1 to 4.2.15, 4.3.1 to 4.4.10, 4.5.1 to 5.0.1
Fixed In:    4.2.16, 4.4.11, 5.0.2
Description: If an external HTML page contains a <script> element with
             its src attribute pointing to a buglist in CSV format, some
             web browsers incorrectly try to parse the CSV file as valid
             JavaScript code. As the buglist is generated based on the
             privileges of the user logged into Bugzilla, the external
             page could collect confidential data contained in the CSV
             file.
References:  https://bugzilla.mozilla.org/show_bug.cgi?id=1232785
CVE Number:  CVE-2015-8509


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

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

If you are unable to upgrade but would like to patch just the security
vulnerability, there are patches available for the issues 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:


Issue 1 Reporter: Holger Fuhrmannek
Issue 1 Fixed by: Frédéric Buclin, Dylan William Hardison, David Lawrence, Gervase Markham


Issue 2 Reporter: Mario Gomes
Issue 2 Fixed by: Frédéric Buclin, Dylan William Hardison, David Lawrence, Gervase Markham

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.