Mozilla

Mozilla Foundation Security Advisory 2014-30

Use-after-free in TypeObject

Announced
March 18, 2014
Reporter
VUPEN
Impact
Critical
Products
Firefox, Firefox ESR, SeaMonkey, Thunderbird
Fixed in
  • Firefox 28
  • Firefox ESR 24.4
  • SeaMonkey 2.25
  • Thunderbird 24.4

Description

Security research firm VUPEN, via TippingPoint's Pwn2Own contest, reported that memory pressure during Garbage Collection could lead to memory corruption of TypeObjects in the JS engine, resulting in an exploitable use-after-free condition.

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

References