Vulnerability Note VU#759273

Mozilla QueryInterface memory corruption vulnerability

Original Release date: 07 Feb 2006 | Last revised: 09 Feb 2006


Mozilla Firefox web browser and Thunderbird mail client contain a memory corruption vulnerability that may allow a remote attacker to execute arbitrary code.


The Mozilla Firefox QueryInterface method contains a memory corruption vulnerability. According to Mozilla:

    Calling the QueryInterface method of the built-in Location and Navigator objects causes memory corruption that might be exploitable to run arbitrary code.

Note that JavaScript must be enabled in order for this vulnerability to exist. JavaScript is enabled by default in the Firefox and Mozilla web browsers, but not in the Mozilla's mail client or Thunderbird. Exploitation can occur by accessing a specially crafted web page with Firefox. If JavaScript is enabled within Mozilla's mail client or Thunderbird, then this issue may be exploitable by opening a specially crafted email.

We are aware of working exploit code for this vulnerability.


A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system.


This issue is fixed in Firefox and SeaMonkey 1.0.

Disable JavaScript in Firefox

Users who are unable to upgrade to a fixed version of the software are encouraged to disable JavaScript in the Firefox web browser and Thunderbird.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Mozilla, Inc.Affected-07 Feb 2006
Red Hat, Inc.Not Affected-09 Feb 2006
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



These vulnerabilities were reported by Georgi Guninski.

This document was written by Jeff Gennari.

Other Information

  • CVE IDs: CVE-2006-0295
  • Date Public: 02 Feb 2006
  • Date First Published: 07 Feb 2006
  • Date Last Updated: 09 Feb 2006
  • Severity Metric: 15.46
  • Document Revision: 36


If you have feedback, comments, or additional information about this vulnerability, please send us email.