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Mozilla Foundation Security Advisory 2013-111

Segmentation violation when replacing ordered list elements

December 10, 2013
Tyson Smith, Jesse Schwartzentruber
Firefox, Firefox ESR, SeaMonkey, Thunderbird
Fixed in
  • Firefox 26
  • Firefox ESR 24.2
  • SeaMonkey 2.23
  • Thunderbird 24.2


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.