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Mozilla Foundation Security Advisory 2007-35

Title: XPCNativeWraper pollution using Script object
Impact: Critical
Announced: October 18, 2007
Reporter: moz_bug_r_a4
Products: Firefox, SeaMonkey

Fixed in: Firefox
  SeaMonkey 1.1.5


Mozilla security researcher moz_bug_r_a4 reported that it was possible to use the Script object to modify XPCNativeWrappers in such a way that subsequent access by the browser chrome--such as by right-clicking to open a context menu--can cause attacker-supplied javascript to run with the same privileges as the user. This is similar to MFSA 2007-25 fixed in Firefox