Remote Yes

Type Arbitrary code execution

Description

An attacker could have sent a message to the parent process where the contents were used to double-index into a JavaScript object, leading to prototype pollution and ultimately attacker-controlled JavaScript executing in the privileged parent process.

AVG-2729 thunderbird 91.9.0-1 91.9.1-1 Critical Fixed

AVG-2728 firefox 100.0.1-1 100.0.2-1 Critical Fixed

https://bugzilla.mozilla.org/show_bug.cgi?id=1770048