{"id":"UBUNTU-CVE-2019-9792","details":"The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird \u003c 60.6, Firefox ESR \u003c 60.6, and Firefox \u003c 66.","modified":"2026-02-04T03:53:26.687824Z","published":"2019-03-20T00:00:00Z","related":["USN-3918-1","USN-3918-2","USN-3927-1"],"upstream":["CVE-2019-9792"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-9792"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2019-08/#CVE-2019-9792"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2019-07/#CVE-2019-9792"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2019-11/#CVE-2019-9792"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3918-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3918-2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3927-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-9792"}],"affected":[{"package":{"name":"firefox","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/firefox@66.0.1+build1-0ubuntu0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"66.0.1+build1-0ubuntu0.14.04.1"}]}],"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","56.0+build6-0ubuntu0.14.04.2","57.0+build4-0ubuntu0.14.04.4","57.0+build4-0ubuntu0.14.04.5","57.0.1+build2-0ubuntu0.14.04.1","57.0.3+build1-0ubuntu0.14.04.1","57.0.4+build1-0ubuntu0.14.04.1","58.0+build6-0ubuntu0.14.04.1","58.0.1+build1-0ubuntu0.14.04.1","58.0.2+build1-0ubuntu0.14.04.1","59.0+build5-0ubuntu0.14.04.1","59.0.1+build1-0ubuntu0.14.04.1","59.0.2+build1-0ubuntu0.14.04.1","59.0.2+build1-0ubuntu0.14.04.4","60.0+build2-0ubuntu0.14.04.1","60.0.1+build2-0ubuntu0.14.04.1","60.0.2+build1-0ubuntu0.14.04.1","61.0+build3-0ubuntu0.14.04.2","61.0.1+build1-0ubuntu0.14.04.1","62.0+build2-0ubuntu0.14.04.3","62.0+build2-0ubuntu0.14.04.4","62.0+build2-0ubuntu0.14.04.5","62.0.3+build1-0ubuntu0.14.04.2","63.0+build2-0ubuntu0.14.04.2","63.0.3+build1-0ubuntu0.14.04.1","64.0+build3-0ubuntu0.14.04.1","65.0+build2-0ubuntu0.14.04.1","65.0.1+build2-0ubuntu0.14.04.1"],"ecosystem_specific":{"availability":"No 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