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Mozilla Foundation Security Advisory 2011-52

Title: Code execution via NoWaiverWrapper
Impact: Critical
Announced: November 8, 2011
Reporter: moz_bug_r_a4
Products: Firefox, Thunderbird, SeaMonkey

Fixed in: Firefox 8.0
  Thunderbird 8.0
  SeaMonkey 2.5


Mozilla security researcher moz_bug_r_a4 reported that an internal privilege check failed to respect the NoWaiverWrappers introduced with Firefox 4. This could result in elevated privilege being granted to web content.