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Mozilla Foundation Security Advisory 2011-49

Title: Memory corruption while profiling using Firebug
Impact: Critical
Announced: November 8, 2011
Reporter: Marc Schoenefeld
Products: Firefox, Thunderbird, SeaMonkey

Fixed in: Firefox 8.0
  Firefox 3.6.24
  Thunderbird 8.0
  Thunderbird 3.1.16
  SeaMonkey 2.5


Marc Schoenefeld reported a crash when using Firebug to profile a JavaScript file with many functions. It may be possible to trigger this crash without the use of debugging APIs, and if so this could be exploitable.