{"id":"USN-3435-2","aliases":[],"status":"published","title":"firefox regression","description":"USN-3435-1 fixed vulnerabilities in Firefox. The update caused the Flash\nplugin to crash in some circumstances. This update fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Multiple security issues were discovered in Firefox. If a user were\n tricked in to opening a specially crafted website, an attacker could\n potentially exploit these to read uninitialized memory, obtain sensitive\n information, bypass phishing and malware protection, spoof the origin in\n modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial\n of service via application crash, or execute arbitrary code.\n (CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812,\n CVE-2017-7813, CVE-2017-7814, CVE-2017-7815, CVE-2017-7818, CVE-2017-7819,\n CVE-2017-7820, CVE-2017-7822, CVE-2017-7823, CVE-2017-7824)\n \n Martin Thomson discovered that NSS incorrectly generated handshake hashes.\n A remote attacker could potentially exploit this to cause a denial of\n service via application crash, or execute arbitrary code. (CVE-2017-7805)\n \n Multiple security issues were discovered in WebExtensions. If a user were\n tricked in to installing a specially crafted extension, an attacker could\n potentially exploit these to download and open non-executable files\n without interaction, or obtain elevated privileges. (CVE-2017-7816,\n CVE-2017-7821)","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2017-10-04T21:13:54Z","modified":"2026-04-22T09:38:54Z","fixes":[{"ecosystem":"Ubuntu:14.04:LTS","package":"firefox","fixed_in":["56.0+build6-0ubuntu0.14.04.2"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"firefox","fixed_in":["56.0+build6-0ubuntu0.16.04.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"firefox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"56.0+build6-0ubuntu0.14.04.2"}]}],"versions":["24.0+build1-0ubuntu1","25.0+build3-0ubuntu0.13.10.1","28.0~b2+build1-0ubuntu2","28.0+build1-0ubuntu1","28.0+build2-0ubuntu1","28.0+build2-0ubuntu2","29.0+build1-0ubuntu0.14.04.2","30.0+build1-0ubuntu0.14.04.3","31.0+build1-0ubuntu0.14.04.1","32.0+build1-0ubuntu0.14.04.1","32.0.3+build1-0ubuntu0.14.04.1","33.0+build2-0ubuntu0.14.04.1","34.0+build2-0ubuntu0.14.04.1","35.0+build3-0ubuntu0.14.04.2","35.0.1+build1-0ubuntu0.14.04.1","36.0+build2-0ubuntu0.14.04.4","36.0.1+build2-0ubuntu0.14.04.1","36.0.4+build1-0ubuntu0.14.04.1","37.0+build2-0ubuntu0.14.04.1","37.0.1+build1-0ubuntu0.14.04.1","37.0.2+build1-0ubuntu0.14.04.1","38.0+build3-0ubuntu0.14.04.1","39.0+build5-0ubuntu0.14.04.1","39.0.3+build2-0ubuntu0.14.04.1","40.0+build4-0ubuntu0.14.04.1","40.0+build4-0ubuntu0.14.04.4","40.0.3+build1-0ubuntu0.14.04.1","41.0+build3-0ubuntu0.14.04.1","41.0.1+build2-0ubuntu0.14.04.1","41.0.2+build2-0ubuntu0.14.04.1","42.0+build2-0ubuntu0.14.04.1","43.0+build1-0ubuntu0.14.04.1","43.0.4+build3-0ubuntu0.14.04.1","44.0+build3-0ubuntu0.14.04.1","44.0.1+build2-0ubuntu0.14.04.1","44.0.2+build1-0ubuntu0.14.04.1","45.0+build2-0ubuntu0.14.04.1","45.0.1+build1-0ubuntu0.14.04.2","45.0.2+build1-0ubuntu0.14.04.1","46.0+build5-0ubuntu0.14.04.2","46.0.1+build1-0ubuntu0.14.04.3","47.0+build3-0ubuntu0.14.04.1","48.0+build2-0ubuntu0.14.04.1","49.0+build4-0ubuntu0.14.04.1","49.0.2+build2-0ubuntu0.14.04.1","50.0+build2-0ubuntu0.14.04.2","50.0.2+build1-0ubuntu0.14.04.1","50.1.0+build2-0ubuntu0.14.04.1","51.0.1+build2-0ubuntu0.14.04.1","51.0.1+build2-0ubuntu0.14.04.2","52.0+build2-0ubuntu0.14.04.1","52.0.1+build2-0ubuntu0.14.04.1","52.0.2+build1-0ubuntu0.14.04.1","53.0+build6-0ubuntu0.14.04.1","53.0.2+build1-0ubuntu0.14.04.2","53.0.3+build1-0ubuntu0.14.04.2","54.0+build3-0ubuntu0.14.04.1","55.0.1+build2-0ubuntu0.14.04.2","55.0.2+build1-0ubuntu0.14.04.1","56.0+build6-0ubuntu0.14.04.1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"firefox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"56.0+build6-0ubuntu0.16.04.2"}]}],"versions":["41.0.2+build2-0ubuntu1","42.0+build2-0ubuntu1","44.0+build3-0ubuntu2","44.0.1+build1-0ubuntu1","44.0.2+build1-0ubuntu1","45.0+build2-0ubuntu1","45.0.1+build1-0ubuntu1","45.0.2+build1-0ubuntu1","46.0+build5-0ubuntu0.16.04.2","46.0.1+build1-0ubuntu0.16.04.2","47.0+build3-0ubuntu0.16.04.1","48.0+build2-0ubuntu0.16.04.1","49.0+build4-0ubuntu0.16.04.1","49.0.2+build2-0ubuntu0.16.04.2","50.0+build2-0ubuntu0.16.04.2","50.0.2+build1-0ubuntu0.16.04.1","50.1.0+build2-0ubuntu0.16.04.1","51.0.1+build2-0ubuntu0.16.04.1","51.0.1+build2-0ubuntu0.16.04.2","52.0+build2-0ubuntu0.16.04.1","52.0.1+build2-0ubuntu0.16.04.1","52.0.2+build1-0ubuntu0.16.04.1","53.0+build6-0ubuntu0.16.04.1","53.0.2+build1-0ubuntu0.16.04.2","53.0.3+build1-0ubuntu0.16.04.2","54.0+build3-0ubuntu0.16.04.1","55.0.1+build2-0ubuntu0.16.04.2","55.0.2+build1-0ubuntu0.16.04.1","56.0+build6-0ubuntu0.16.04.1"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-3435-2","tags":["advisory"]},{"url":"https://launchpad.net/bugs/1720908","tags":["report"]}],"sources":{"osv":[{"id":"USN-3435-2","title":"firefox regression","description":"USN-3435-1 fixed vulnerabilities in Firefox. The update caused the Flash\nplugin to crash in some circumstances. This update fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Multiple security issues were discovered in Firefox. If a user were\n tricked in to opening a specially crafted website, an attacker could\n potentially exploit these to read uninitialized memory, obtain sensitive\n information, bypass phishing and malware protection, spoof the origin in\n modal dialogs, conduct cross-site scripting (XSS) attacks, cause a denial\n of service via application crash, or execute arbitrary code.\n (CVE-2017-7793, CVE-2017-7810, CVE-2017-7811, CVE-2017-7812,\n CVE-2017-7813, CVE-2017-7814, CVE-2017-7815, CVE-2017-7818, CVE-2017-7819,\n CVE-2017-7820, CVE-2017-7822, CVE-2017-7823, CVE-2017-7824)\n \n Martin Thomson discovered that NSS incorrectly generated handshake hashes.\n A remote attacker could potentially exploit this to cause a denial of\n service via application crash, or execute arbitrary code. (CVE-2017-7805)\n \n Multiple security issues were discovered in WebExtensions. If a user were\n tricked in to installing a specially crafted extension, an attacker could\n potentially exploit these to download and open non-executable files\n without interaction, or obtain elevated privileges. (CVE-2017-7816,\n CVE-2017-7821)\n","status":"published","published":"2017-10-04T21:13:54Z","modified":"2026-04-22T09:38:54.983278Z","updated_at":"2026-11-02T16:58:13.496563Z"}]}}