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Mozilla Foundation Security Advisory 2007-21

Title: Privilege escallation using an event handler attached to an element not in the document
Impact: Critical
Announced: July 17, 2007
Reporter: moz_bug_r_a4
Products: Firefox

Fixed in: Firefox 2.0.0.5
  SeaMonkey 1.1.3

Description

An attacker can use an element outside of a document to call an event handler allowing content to run arbitrary code with chrome privileges.

References