Arch Linux Security Advisory ASA-202101-5 ========================================= Severity: Critical Date : 2021-01-08 CVE-ID : CVE-2020-16044 Package : firefox Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1413 Summary ======= The package firefox before version 84.0.2-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 84.0.2-1. # pacman -Syu "firefox>=84.0.2-1" The problem has been fixed upstream in version 84.0.2. Workaround ========== None. 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. Impact ====== A remote attacker might be able to execute arbitrary code via a crafted SCTP packet. References ========== https://www.mozilla.org/en-US/security/advisories/mfsa2021-01/#CVE-2020-1604... https://bugzilla.mozilla.org/show_bug.cgi?id=1683964 https://hg.mozilla.org/mozilla-central/rev/08ba03dc8d4420e04e7c77fee3013e681... https://hg.mozilla.org/mozilla-central/rev/8c09f4813fc7e8f44605b6092262199bf... https://hg.mozilla.org/mozilla-central/rev/5991645a87d2abf289686d09d943229c9... https://security.archlinux.org/CVE-2020-16044