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Mozilla Foundation Security Advisory 2005-56

Code execution through shared function objects

Announced
July 12, 2005
Reporter
moz_bug_r_a4, shutdown
Impact
Critical
Products
Firefox, Mozilla Suite
Fixed in
  • Firefox 1.0.5
  • Mozilla Suite 1.7.10

Description

Improper cloning of base objects allowed web content scripts to walk up the prototype chain to get to a privileged object. This could be used to execute code with enhanced privileges.

Workaround

Upgrade to a version containing the fix.

References

Bug details embargoed until August 1, 2005