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CVE-2019-11759 An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack

Description

An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Affected products and versions

Product Affected versions Fixed in
Firefox Versions not published
Thunderbird Versions not published
Firefox ESR Versions not published

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