Vulnerability Note VU#265964

Mozilla products contain a race condition

Original Release date: 27 Jul 2006 | Last revised: 09 Feb 2007


Mozilla products contain a race condition. This vulnerability may allow a remote attacker to execute arbitrary code on a vulnerable system.


The Mozilla products JavaScript garbage collection process may delete a variable while that variable is still in use. This may corrupt memory in a way that can allow an attacker to execute arbitrary code.

For complete list of affected products refer to Mozilla Foundation Security Advisory 2006-48.


A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. The attacker could also cause the vulnerable application to crash.


Apply an update
This vulnerability is addressed in Firefox, Thunderbird, and SeaMonkey 1.0.3, according to the Mozilla Foundation Security Update 2006-48.

Disable JavaScript

This vulnerability can be mitigated by disabling JavaScript.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Mozilla, Inc.Affected-27 Jul 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



This vulnerability was reported in Mozilla Foundation Security Advisory 2006-48. Mozilla credits H. D. Moore with reporting this vulnerability.

This document was written by Jeff Gennari.

Other Information

  • CVE IDs: CVE-2006-3803
  • Date Public: 25 Jul 2006
  • Date First Published: 27 Jul 2006
  • Date Last Updated: 09 Feb 2007
  • Severity Metric: 16.03
  • Document Revision: 13


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