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Mozilla Foundation Security Advisory 2012-87

Title: Use-after-free in the IME State Manager
Impact: Critical
Announced: October 9, 2012
Reporter: miaubiz
Products: Firefox, Thunderbird, SeaMonkey

Fixed in: Firefox 16
  Firefox ESR 10.0.8
  Thunderbird 16
  Thunderbird ESR 10.0.8
  SeaMonkey 2.13

Description

Security researcher miaubiz used the Address Sanitizer tool to discover a use-after-free in the IME State Manager code. This could lead to a potentially exploitable crash.

In general these flaws cannot be exploited through email in the Thunderbird and SeaMonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts in those products.

References