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Mozilla Foundation Security Advisory 2010-36

Title: Use-after-free error in NodeIterator
Impact: Critical
Announced: July 20, 2010
Reporter: regenrecht (via TippingPoint's Zero Day Initiative)
Products: Firefox, SeaMonkey

Fixed in: Firefox 3.6.7
  Firefox 3.5.11
  SeaMonkey 2.0.6

Description

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative an error in Mozilla's implementation of NodeIterator in which a malicious NodeFilter could be created which would detach nodes from the DOM tree while it was being traversed. The use of a detached and subsequently deleted node could result in the execution of attacker-controlled memory.

References