Mozilla Firefox / Thunderbird "defaultValue" Check Bypass Vulnerability

SA50964

CVE-2012-4193

12 Oct 2012

Highly Critical

Vendor Patch

Mozilla Firefox 10.x
Mozilla Thunderbird 10.x

From remote

System access

This covers vulnerabilities where malicious people are able to gain system access and execute arbitrary code with the privileges of a local user.

Security Bypass

This covers vulnerabilities or security issues where malicious users or people can bypass certain security mechanisms of the application.

The actual impact varies significantly depending on the design and purpose of the affected application.

A vulnerability has been reported in Mozilla Firefox and Thunderbird, which can be exploited by malicious people to bypass certain security restrictions or potentially compromise a user's system.

For more information see vulnerability #4 in:
SA50932

The vulnerability is reported in versions prior to 10.0.9.

Update to version 10.0.9.

http://www.mozilla.org/security/announce/2012/mfsa2012-89.html