Use-after-free vulnerability in IME event handling in Firefox and Thunderbird

CVE-2017-7752 · MEDIUM Severity

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

A use-after-free vulnerability during specific user interactions with the input method editor (IME) in some languages due to how events are handled. This results in a potentially exploitable crash but would require specific user interaction to trigger. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

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