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Bugzilla Unauthorized Account Creation

Bugzilla Unauthorized Account Creation
Posted Sep 10, 2015
Authored by Frederic Buclin, Byron Jones, Netanel Rubin | Site bugzilla.org

Bugzilla versions 2.0 to 4.2.14, 4.3.1 to 4.4.9, and 4.5.1 to 5.0 suffer from an unauthorized account creation vulnerability.

tags | advisory
advisories | CVE-2015-4499
SHA-256 | 9b1272725e4045835294ef9f644a6664c5657f9a14374d95b6685f5bdc61cc69

Bugzilla Unauthorized Account Creation

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Summary
=======

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: https://bugzilla.mozilla.org/show_bug.cgi?id=1202447
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:

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 these
issues:

Byron Jones
Frédéric Buclin
Netanel Rubin

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 mozilla.support.bugzilla
newsgroup or the support-bugzilla mailing list.
https://www.bugzilla.org/support/ has directions for accessing these
forums.
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