Use-After-Free Vulnerability in FontFace Object

CVE-2017-5402 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.

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