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Mozilla Foundation Security Advisory 2013-17

Title: Use-after-free in ListenerManager
Impact: Critical
Announced: January 8, 2013
Reporter: regenrecht
Products: Firefox, Thunderbird, SeaMonkey

Fixed in: Firefox 18.0
  Firefox ESR 10.0.12
  Firefox ESR 17.0.2
  Thunderbird 17.0.2
  Thunderbird ESR 10.0.12
  Thunderbird ESR 17.0.2
  SeaMonkey 2.15


Security researcher regenrecht reported, via TippingPoint's Zero Day Initiative, a use-after-free within the ListenerManager when garbage collection is forced after data in listener objects have been allocated in some circumstances. This results in a use-after-free which can lead to arbitrary code execution.

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.