Mozilla

Mozilla Foundation Security Advisory 2015-139

Integer overflow allocating extremely large textures

Announced
December 15, 2015
Reporter
Abhishek Arya
Impact
High
Products
Firefox, Firefox ESR, Thunderbird
Fixed in
  • Firefox 43
  • Firefox ESR 38.5
  • Thunderbird 38.5

Description

Security researcher Abhishek Arya (Inferno) of the Google Chrome Security Team used the Address Sanitizer tool to discover an integer overflow when when allocating textures of extremely larges sizes during graphics operations. This results in a potentially exploitable crash when triggered.

In general this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled, but is potentially a risk in browser or browser-like contexts.

References