Use-after-free vulnerability in Firefox and Thunderbird

CVE-2017-5404 · HIGH Severity

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

A use-after-free error can occur when manipulating ranges in selections with one node inside a native anonymous tree and one node outside of it. 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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