Related Vulnerabilities: CVE-2020-16044  

A security issue was found in Firefox before 84.0.2. A malicious peer could have modified a COOKIE-ECHO chunk in a SCTP packet in a way that potentially resulted in a use-after-free. Mozilla presumes that with enough effort it could have been exploited to run arbitrary code.

Severity Critical

Remote Yes

Type Arbitrary code execution

Description

A security issue was found in Firefox before 84.0.2. A malicious peer could have modified a COOKIE-ECHO chunk in a SCTP packet in a way that potentially resulted in a use-after-free. Mozilla presumes that with enough effort it could have been exploited to run arbitrary code.

AVG-1413 firefox 84.0.1-1 84.0.2-1 Critical Fixed

https://www.mozilla.org/en-US/security/advisories/mfsa2021-01/#CVE-2020-16044
https://bugzilla.mozilla.org/show_bug.cgi?id=1683964
https://hg.mozilla.org/mozilla-central/rev/08ba03dc8d4420e04e7c77fee3013e68180e6ead
https://hg.mozilla.org/mozilla-central/rev/8c09f4813fc7e8f44605b6092262199bff15cdd7
https://hg.mozilla.org/mozilla-central/rev/5991645a87d2abf289686d09d943229c9e3e54b5