========================================================================== Ubuntu Security Notice USN-5074-1 September 09, 2021 firefox vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Firefox could be made to crash or run programs as your login if it opened a malicious website. Software Description: - firefox: Mozilla Open Source web browser Details: 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, bypass mixed content blocking, or execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: firefox 92.0+build3-0ubuntu0.21.04.1 Ubuntu 20.04 LTS: firefox 92.0+build3-0ubuntu0.20.04.1 Ubuntu 18.04 LTS: firefox 92.0+build3-0ubuntu0.18.04.1 After a standard system update you need to restart Firefox to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5074-1 CVE-2021-38491, CVE-2021-38493, CVE-2021-38494 Package Information: https://launchpad.net/ubuntu/+source/firefox/92.0+build3-0ubuntu0.21.04.1 https://launchpad.net/ubuntu/+source/firefox/92.0+build3-0ubuntu0.20.04.1 https://launchpad.net/ubuntu/+source/firefox/92.0+build3-0ubuntu0.18.04.1