Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, trick a user into accepting unwanted permissions, or execute
arbitrary code.
ubuntu.com/security/CVE-2021-29980
ubuntu.com/security/CVE-2021-29981
ubuntu.com/security/CVE-2021-29982
ubuntu.com/security/CVE-2021-29984
ubuntu.com/security/CVE-2021-29985
ubuntu.com/security/CVE-2021-29986
ubuntu.com/security/CVE-2021-29987
ubuntu.com/security/CVE-2021-29988
ubuntu.com/security/CVE-2021-29989
ubuntu.com/security/CVE-2021-29990
ubuntu.com/security/notices/USN-5037-1