Mozilla

Mozilla

Mozilla Foundation Security Advisory 2005-40

Missing Install object instance checks

Announced
April 15, 2005
Reporter
Georgi Guninski
Impact
Moderate
Products
Firefox, Mozilla Suite
Fixed in
  • Firefox 1.0.3
  • Mozilla Suite 1.7.7

Description

The native implementations of InstallTrigger and other XPInstall-related javascript objects did not properly validate that they were called on instances of the correct type. By passing other objects, even raw numbers, the javascript interpreter would jump to the wrong place in memory. Although no proof of concept has been developed we believe this could be exploited.

Workaround

Disable Javascript.

References