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Mozilla Foundation Security Advisory 2010-20

Title: Chrome privilege escalation via forced URL drag and drop
Impact: Critical
Announced: March 30, 2010
Reporter: Paul Stone
Products: Firefox, SeaMonkey

Fixed in: Firefox 3.6.2
  Firefox 3.5.9
  Firefox 3.0.19
  SeaMonkey 2.0.4


Security researcher Paul Stone reported that a browser applet could be used to turn a simple mouse click into a drag-and-drop action, potentially resulting in the unintended loading of resources in a user's browser. This behavior could be used twice in succession to first load a privileged chrome: URL in a victim's browser, then load a malicious javascript: URL on top of the same document resulting in arbitrary script execution with chrome privileges.