========================================================================== Ubuntu Security Notice USN-4474-2 September 03, 2020
firefox regressions ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: USN-4474-1 caused some minor regressions in Firefox. Software Description: - firefox: Mozilla Open Source web browser Details: USN-4474-1 fixed vulnerabilities in Firefox. The update introduced various minor regressions. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, trick the user in to installing a malicious extension, spoof the URL bar, leak sensitive information between origins, or execute arbitrary code. (CVE-2020-15664, CVE-2020-15665, CVE-2020-15666, CVE-2020-15670) It was discovered that NSS incorrectly handled certain signatures. An attacker could possibly use this issue to expose sensitive information. (CVE-2020-12400, CVE-2020-12401, CVE-2020-6829) A data race was discovered when importing certificate information in to the trust store. An attacker could potentially exploit this to cause an unspecified impact. (CVE-2020-15668) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: firefox 80.0.1+build1-0ubuntu0.20.04.1 Ubuntu 18.04 LTS: firefox 80.0.1+build1-0ubuntu0.18.04.1 Ubuntu 16.04 LTS: firefox 80.0.1+build1-0ubuntu0.16.04.1 After a standard system update you need to restart Firefox to make all the necessary changes. References: https://usn.ubuntu.com/4474-2 https://usn.ubuntu.com/4474-1 https://launchpad.net/bugs/1893021 Package Information: https://launchpad.net/ubuntu/+source/firefox/80.0.1+build1-0ubuntu0.20.04.1 https://launchpad.net/ubuntu/+source/firefox/80.0.1+build1-0ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/firefox/80.0.1+build1-0ubuntu0.16.04.1
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