Bugzilla Access Control Flaw in 'report.cgi' Lets Remote Users Conduct Cross-Site Request Forgery Attacks
SecurityTracker Alert ID: 1040389|
SecurityTracker URL: http://securitytracker.com/id/1040389
(Links to External Site)
Date: Feb 19 2018
Modification of user information|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): 2.16rc1 - 4.4.12, 4.5.1 - 5.0.3|
A vulnerability was reported in Bugzilla. A remote user can conduct cross-site request forgery attacks.|
A remote user can create a specially crafted HTML page or URL that, when loaded by the target authenticated user, will take actions on the target interface acting as the target user.
The image generation function in 'report.cgi' is affected.
Holger Fuhrmannek reported this vulnerability.
A remote user can take actions on the target system acting as the target authenticated user.|
The vendor has issued a fix (4.4.13, 5.0.4).|
The vendor advisory is available at:
Vendor URL: www.bugzilla.org/security/4.4.12/ (Links to External Site)
Access control error, Input validation error|
|Underlying OS: Linux (Any), UNIX (Any)|
Source Message Contents
Subject: Security advisory for Bugzilla 5.1.1, 5.0.3, and 4.4.12|
Bugzilla is a Web-based bug-tracking system used by a large number of
software projects. The following security issue has been discovered
* A CSRF vulnerability in report.cgi would allow a third-party site
to extract confidential information from a bug the victim had access to.
All affected installations are encouraged to upgrade as soon as
Class: Cross-Site Request Forgery
Versions: Bugzilla 2.16rc1 to 4.4.12, 4.5.1 to 5.0.3
Fixed In: 4.4.13, 5.0.4
Description: Via the image generation in report.cgi, a malicious site
using the presence of certain images, could extract
potentially confidential information if the victim was
logged in and could access the bug.
CVE Number: CVE-2018-5123
The fix for this issue is included in the 4.4.13 and 5.0.4
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
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 this
Reporter: Holger Fuhrmannek
Fixed by: Dylan Hardison
General information about the Bugzilla bug-tracking system can be found
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