Security Advisory for Bugzilla 3.0.3, 3.1.3, 2.22.3, and 2.20.5

Type securityvulns
Reporter Securityvulns
Modified 2008-05-06T00:00:00



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

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

  • Users without the "canconfirm" privilege could enter a bug as NEW or ASSIGNED by using the XML-RPC interface.

  • When viewing several bugs at once, there was a Cross-Site Scripting hole.

  • The inbound email interface allowed you to set the Reporter via the text of the email, instead of just using the From header.

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

Vulnerability Details

Class: Unauthorized Bug Change Versions: 3.1.3 Description: Users normally need the "canconfirm" privilege to put bugs in the NEW or ASSIGNED state. However, users were being allowed to create bugs in the NEW or ASSIGNED state if they were creating the bug through the XML-RPC interface. Reference:

Class: Cross-Site Scripting Versions: 2.17.2 and higher Description: When using the "Format for Printing" view of a bug (or the "Long Format" of a bug list, which is the same thing), there was a cross-site scripting hole--arbitrary text from a particular URL parameter could be injected into the page without filtering. Reference:

Class: Account Impersonation (Minor) Versions: 2.23.4 and higher Description: By design, always believes the "From" header as the user making changes or uses that as the reporter of the bug. However, you could also specify the changer/reporter in the body of the email and override the "From" header, possibly bypassing some security checks set up by administrators against the "From" header. For most installations this is a minor or inconsequential issue, as the documentation of already explains that it does not do any user authentication (it just believes the "From" header), so installations using it should not have been expecting user account security (though they may have had checks against the "From" header--that is what makes this a security issue). Reference:

Vulnerability Solutions

The fixes for the security bugs mentioned in this advisory are included in the 3.0.4, 3.1.4, 2.22.4, and 2.20.6 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:


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

Frederic Buclin Max Kanat-Alexander Bradley Baetz Loren Butler Marc Schumann

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

Comments and follow-ups can be directed to the newsgroup or the support-bugzilla mailing list. has directions for accessing these forums.