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CVE-2017-7819 A use-after-free vulnerability can occur in design mode when image objects are resized if objects referenced during…

Description

A use-after-free vulnerability can occur in design mode when image objects are resized if objects referenced during the resizing have been freed from memory. This results in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

Affected products and versions

Product Affected versions Fixed in
Firefox 56 earliest → < 56 56
Firefox ESR 52.4 earliest → < 52.4 52.4
Thunderbird 52.4 earliest → < 52.4 52.4

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