Security Advisory for Bugzilla 3.0, 2.22.1, and 2.20.4

Type securityvulns
Reporter Securityvulns
Modified 2007-08-25T00:00:00




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:

  • A possible cross-site scripting (XSS) vulnerability when filing bugs using the guided form.

  • When using, insufficiently escaped data may be passed to sendmail.

  • Users using the WebService interface may access Bugzilla's time-tracking fields even if they normally cannot see them.

We strongly advise that 2.20.x and 2.22.x users should upgrade to 2.20.5 and 2.22.3 respectively. 3.0 users, and users of 2.18.x or below, should upgrade to 3.0.1.

Vulnerability Details

Issue 1

Class: Cross-Site Scripting Versions: 2.17.1 and above Description: Bugzilla does not properly escape the 'buildid' field in the guided form when filing bugs. From 2.17.1 till 2.23.3, this field was based exclusively on the User-Agent string returned by your web browser. Since 2.23.4, this parameter can be defined in the URL passed to enter_bug.cgi, overwriting the User-Agent string and may lead to cross-site scripting. The guided form is not usually used by Bugzilla installations, as it is shipped only as an example to be modified for their own use. Reference:

Issue 2

Class: Command Injection Versions: 2.23.4 and above Description: Bugzilla 2.23.4 and newer use the Email:: modules instead of the Mail:: and MIME:: ones. The argument passed to the - -f option of Email::Send::Sendmail() is insufficiently escaped and may lead to limited command injection when called from, a script which was also introduced in 2.23.4. Reference:

Issue 3

Class: Information Leak Versions: 2.23.3 and above Description: Bugzilla's WebService (XML-RPC) interface allows you to access the time-tracking fields (such as Deadline, Estimated Time, etc.) on all bugs, even if you normally cannot access time-tracking fields. Reference:

Vulnerability Solutions

The fixes for all of the security bugs mentioned in this advisory are included in the 2.20.5, 2.22.3, 3.0.1 and 3.1.1 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:

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.


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

Frйdйric Buclin Max Kanat-Alexander Dave Miller Loпc Minier Masahiro Yamada

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.

  • -Max Kanat-Alexander Release Manager, Bugzilla Project -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux)

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