========================================================================== Ubuntu Security Notice USN-3991-2 June 06, 2019
firefox regression ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 19.04 - Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: USN-3991-1 caused a regression in Firefox. Software Description: - firefox: Mozilla Open Source web browser Details: USN-3991-1 fixed vulnerabilities in Firefox. The update caused a regression which resulted in issues when upgrading between Ubuntu releases. 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, spoof the browser UI, trick the user in to launching local executable binaries, obtain sensitive information, conduct cross-site scripting (XSS) attacks, or execute arbitrary code. (CVE-2019-11691, CVE-2019-11692, CVE-2019-11693, CVE-2019-11695, CVE-2019-11696, CVE-2019-11699, CVE-2019-11701, CVE-2019-7317, CVE-2019-9800, CVE-2019-9814, CVE-2019-9817, CVE-2019-9819, CVE-2019-9820, CVE-2019-9821) It was discovered that pressing certain key combinations could bypass addon installation prompt delays. If a user opened a specially crafted website, an attacker could potentially exploit this to trick them in to installing a malicious extension. (CVE-2019-11697) It was discovered that history data could be exposed via drag and drop of hyperlinks to and from bookmarks. If a user were tricked in to dragging a specially crafted hyperlink to the bookmark toolbar or sidebar, and subsequently back in to the web content area, an attacker could potentially exploit this to obtain sensitive information. (CVE-2019-11698) A type confusion bug was discovered with object groups and UnboxedObjects. If a user were tricked in to opening a specially crafted website after enabling the UnboxedObjects feature, an attacker could potentially exploit this to bypass security checks. (CVE-2019-9816) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 19.04: firefox 67.0.1+build1-0ubuntu0.19.04.1 Ubuntu 18.10: firefox 67.0.1+build1-0ubuntu0.18.10.1 Ubuntu 18.04 LTS: firefox 67.0.1+build1-0ubuntu0.18.04.1 Ubuntu 16.04 LTS: firefox 67.0.1+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/3991-2 https://usn.ubuntu.com/3991-1 https://launchpad.net/bugs/1830096 Package Information: https://launchpad.net/ubuntu/+source/firefox/67.0.1+build1-0ubuntu0.19.04.1 https://launchpad.net/ubuntu/+source/firefox/67.0.1+build1-0ubuntu0.18.10.1 https://launchpad.net/ubuntu/+source/firefox/67.0.1+build1-0ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/firefox/67.0.1+build1-0ubuntu0.16.04.1
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