Summary

=======

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: https://bugzilla.mozilla.org/show_bug.cgi?id=415471

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: https://bugzilla.mozilla.org/show_bug.cgi?id=425665

Class: Account Impersonation (Minor)

Versions: 2.23.4 and higher

Description: By design, email_in.pl 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 email_in.pl 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: https://bugzilla.mozilla.org/show_bug.cgi?id=419188

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:

http://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

these issues:

Frédéric Buclin

Max Kanat-Alexander

Bradley Baetz

Loren Butler

Marc Schumann

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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