=========================================================================== Ubuntu Security Notice USN-3216-2 March 30, 2017 firefox regression =========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS Summary: USN-3216-1 introduced a regression in Firefox. Software Description: - firefox: Mozilla Open Source web browser Details: USN-3216-1 fixed vulnerabilities in Firefox. The update resulted in a startup crash when Firefox is used with XRDP. 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 bypass same origin restrictions, obtain sensitive information, spoof the addressbar, spoof the print dialog, cause a denial of service via application crash or hang, or execute arbitrary code. (CVE-2017-5398, CVE-2017-5399, CVE-2017-5400, CVE-2017-5401, CVE-2017-5402, CVE-2017-5403, CVE-2017-5404, CVE-2017-5405, CVE-2017-5406, CVE-2017-5407, CVE-2017-5408, CVE-2017-5410, CVE-2017-5412, CVE-2017-5413, CVE-2017-5414, CVE-2017-5415, CVE-2017-5416, CVE-2017-5417, CVE-2017-5418, CVE-2017-5419, CVE-2017-5420, CVE-2017-5421, CVE-2017-5422, CVE-2017-5426, CVE-2017-5427) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.10: firefox 52.0.2+build1-0ubuntu0.16.10.1 Ubuntu 16.04 LTS: firefox 52.0.2+build1-0ubuntu0.16.04.1 Ubuntu 14.04 LTS: firefox 52.0.2+build1-0ubuntu0.14.04.1 Ubuntu 12.04 LTS: firefox 52.0.2+build1-0ubuntu0.12.04.1 After a standard system update you need to restart Firefox to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-3216-2 http://www.ubuntu.com/usn/usn-3216-1 https://launchpad.net/bugs/1671079 Package Information: https://launchpad.net/ubuntu/+source/firefox/52.0.2+build1-0ubuntu0.16.10.1 https://launchpad.net/ubuntu/+source/firefox/52.0.2+build1-0ubuntu0.16.04.1 https://launchpad.net/ubuntu/+source/firefox/52.0.2+build1-0ubuntu0.14.04.1 https://launchpad.net/ubuntu/+source/firefox/52.0.2+build1-0ubuntu0.12.04.1