Security Advisory for Bugzilla 5.0.1, 4.4.10 and 4.2.15

Type securityvulns
Reporter Securityvulns
Modified 2015-10-26T00:00:00



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

  • Login names longer than 127 characters can be corrupted, which could lead to the creation of a user account with an unexpected email address.

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

Vulnerability Details

Class: Unauthorized Account Creation Versions: Bugzilla 2.0 to 4.2.14, 4.3.1 to 4.4.9, 4.5.1 to 5.0 Fixed In: 4.2.15, 4.4.10, 5.0.1 Description: Login names (usually an email address) longer than 127 characters are silently truncated in MySQL which could cause the domain name of the email address to be corrupted. An attacker could use this vulnerability to create an account with an email address different from the one originally requested. The login name could then be automatically added to groups based on the group's regular expression setting. References: CVE Number: CVE-2015-4499

Vulnerability Solutions

The fix for this issue is included in the 4.2.15, 4.4.10 and 5.0.1 releases. Upgrading to a release with the relevant fix will protect your installation from possible exploits of this issue.

If you are unable to upgrade but would like to patch just the security vulnerability, there are patches available for the issue at the "References" URL.

Full release downloads, patches to upgrade Bugzilla from previous versions, and git 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:

Byron Jones Frederic Buclin Netanel Rubin

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.