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Mozilla Foundation Security Advisory 2013-111

Title: Segmentation violation when replacing ordered list elements
Impact: Critical
Announced: December 10, 2013
Reporter: Tyson Smith, Jesse Schwartzentruber
Products: Firefox, Thunderbird, Seamonkey

Fixed in: Firefox 26
  Firefox ESR 24.2
  Thunderbird 24.2
  Seamonkey 2.23


Security researchers Tyson Smith and Jesse Schwartzentruber of the BlackBerry Security Automated Analysis Team used the Address Sanitizer tool while fuzzing to discover a mechanism where inserting an ordered list into a document through script could lead to a potentially exploitable crash that can be triggered by web content.

In general these flaws cannot be exploited through email in the Thunderbird and Seamonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts.