Use-after-free vulnerability in the nsEditor::IsPreformatted function
in editor/libeditor/base/nsEditor.cpp in Mozilla Firefox before
19.0.2, Firefox ESR 17.x before 17.0.4, Thunderbird before 17.0.4,
Thunderbird ESR 17.x before 17.0.4, and SeaMonkey before 2.16.1 allows
remote attackers to execute arbitrary code via vectors involving an
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