{"id":"USN-6509-2","aliases":[],"status":"published","title":"firefox regressions","description":"USN-6509-1 fixed vulnerabilities in Firefox. The update introduced\nseveral minor regressions. 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 into opening a specially crafted website, an attacker could\n potentially exploit these to cause a denial of service, obtain sensitive\n information across domains, or execute arbitrary code. (CVE-2023-6206,\n CVE-2023-6210, CVE-2023-6211, CVE-2023-6212, CVE-2023-6213)\n \n It was discovered that Firefox did not properly manage memory when\n images were created on the canvas element. An attacker could potentially\n exploit this issue to obtain sensitive information. (CVE-2023-6204)\n \n It discovered that Firefox incorrectly handled certain memory when using a\n MessagePort. An attacker could potentially exploit this issue to cause a\n denial of service. (CVE-2023-6205)\n \n It discovered that Firefox incorrectly did not properly manage ownership\n in ReadableByteStreams. An attacker could potentially exploit this issue\n to cause a denial of service. (CVE-2023-6207)\n \n It discovered that Firefox incorrectly did not properly manage copy\n operations when using Selection API in X11. An attacker could potentially\n exploit this issue to obtain sensitive information. (CVE-2023-6208)\n \n Rachmat Abdul Rokhim discovered incorrectly handled parsing of relative\n URLS starting with \"///\". An attacker could potentially exploit this issue\n to cause a denial of service. (CVE-2023-6209)","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2023-12-04T02:22:47Z","modified":"2026-04-22T10:41:33Z","fixes":[{"ecosystem":"Ubuntu:20.04:LTS","package":"firefox","fixed_in":["120.0.1+build1-0ubuntu0.20.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"firefox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"120.0.1+build1-0ubuntu0.20.04.1"}]}],"versions":["69.0.3+build1-0ubuntu1","70.0+build2-0ubuntu1","70.0+build2-0ubuntu2","70.0.1+build1-0ubuntu2","71.0+build2-0ubuntu2","71.0+build5-0ubuntu1","72.0.1+build1-0ubuntu1","72.0.2+build1-0ubuntu1","73.0+build1-0ubuntu1","73.0+build2-0ubuntu1","73.0+build3-0ubuntu1","73.0.1+build1-0ubuntu1","74.0+build1-0ubuntu1","74.0+build2-0ubuntu1","74.0+build2-0ubuntu2","74.0+build3-0ubuntu1","75.0+build3-0ubuntu1","76.0+build2-0ubuntu0.20.04.1","76.0.1+build1-0ubuntu0.20.04.1","77.0.1+build1-0ubuntu0.20.04.1","78.0.1+build1-0ubuntu0.20.04.1","78.0.2+build2-0ubuntu0.20.04.1","79.0+build1-0ubuntu0.20.04.1","80.0+build2-0ubuntu0.20.04.1","80.0.1+build1-0ubuntu0.20.04.1","81.0+build2-0ubuntu0.20.04.1","81.0.2+build1-0ubuntu0.20.04.1","82.0+build2-0ubuntu0.20.04.1","82.0.2+build1-0ubuntu0.20.04.1","82.0.3+build1-0ubuntu0.20.04.1","83.0+build2-0ubuntu0.20.04.1","84.0+build3-0ubuntu0.20.04.1","84.0.1+build1-0ubuntu0.20.04.1","84.0.2+build1-0ubuntu0.20.04.1","85.0+build1-0ubuntu0.20.04.1","85.0.1+build1-0ubuntu0.20.04.1","86.0+build3-0ubuntu0.20.04.1","86.0.1+build1-0ubuntu0.20.04.1","87.0+build3-0ubuntu0.20.04.2","88.0+build2-0ubuntu0.20.04.1","88.0.1+build1-0ubuntu0.20.04.2","89.0+build2-0ubuntu0.20.04.2","89.0.1+build1-0ubuntu0.20.04.1","89.0.2+build1-0ubuntu0.20.04.1","90.0+build1-0ubuntu0.20.04.1","90.0.2+build1-0ubuntu0.20.04.1","91.0+build2-0ubuntu0.20.04.1","91.0.1+build1-0ubuntu0.20.04.1","91.0.2+build1-0ubuntu0.20.04.1","92.0+build3-0ubuntu0.20.04.1","93.0+build1-0ubuntu0.20.04.1","94.0+build3-0ubuntu0.20.04.1","95.0+build1-0ubuntu0.20.04.1","95.0.1+build2-0ubuntu0.20.04.1","96.0+build2-0ubuntu0.20.04.1","97.0+build2-0ubuntu0.20.04.1","97.0.2+build1-0ubuntu0.20.04.1","98.0+build3-0ubuntu0.20.04.2","98.0.1+build2-0ubuntu0.20.04.1","98.0.2+build1-0ubuntu0.20.04.1","99.0+build2-0ubuntu0.20.04.2","100.0+build2-0ubuntu0.20.04.1","100.0.2+build1-0ubuntu0.20.04.1","101.0.1+build1-0ubuntu0.20.04.1","102.0+build2-0ubuntu0.20.04.1","103.0+build1-0ubuntu0.20.04.1","104.0+build3-0ubuntu0.20.04.1","105.0+build2-0ubuntu0.20.04.1","106.0.2+build1-0ubuntu0.20.04.1","106.0.5+build1-0ubuntu0.20.04.1","107.0+build2-0ubuntu0.20.04.1","108.0+build2-0ubuntu0.20.04.1","108.0.1+build1-0ubuntu0.20.04.1","108.0.2+build1-0ubuntu0.20.04.1","109.0+build2-0ubuntu0.20.04.1","109.0.1+build1-0ubuntu0.20.04.2","110.0+build3-0ubuntu0.20.04.1","110.0.1+build2-0ubuntu0.20.04.1","111.0+build2-0ubuntu0.20.04.1","111.0.1+build2-0ubuntu0.20.04.1","112.0+build2-0ubuntu0.20.04.1","112.0.1+build1-0ubuntu0.20.04.1","112.0.2+build1-0ubuntu0.20.04.1","113.0+build2-0ubuntu0.20.04.1","113.0.1+build1-0ubuntu0.20.04.1","113.0.2+build1-0ubuntu0.20.04.1","114.0+build3-0ubuntu0.20.04.1","114.0.1+build1-0ubuntu0.20.04.1","114.0.2+build1-0ubuntu0.20.04.1","115.0+build2-0ubuntu0.20.04.3","115.0.2+build1-0ubuntu0.20.04.1","116.0+build2-0ubuntu0.20.04.2","116.0.2+build1-0ubuntu0.20.04.1","116.0.3+build2-0ubuntu0.20.04.1","117.0+build2-0ubuntu0.20.04.1","117.0.1+build2-0ubuntu0.20.04.1","118.0.1+build1-0ubuntu0.20.04.1","118.0.2+build2-0ubuntu0.20.04.1","119.0+build2-0ubuntu0.20.04.1","119.0.1+build1-0ubuntu0.20.04.1","120.0+build2-0ubuntu0.20.04.1"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-6509-2","tags":["advisory"]},{"url":"https://launchpad.net/bugs/2045518","tags":["report"]}],"sources":{"osv":[{"id":"USN-6509-2","title":"firefox regressions","description":"USN-6509-1 fixed vulnerabilities in Firefox. The update introduced\nseveral minor regressions. 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 into opening a specially crafted website, an attacker could\n potentially exploit these to cause a denial of service, obtain sensitive\n information across domains, or execute arbitrary code. (CVE-2023-6206,\n CVE-2023-6210, CVE-2023-6211, CVE-2023-6212, CVE-2023-6213)\n \n It was discovered that Firefox did not properly manage memory when\n images were created on the canvas element. An attacker could potentially\n exploit this issue to obtain sensitive information. (CVE-2023-6204)\n \n It discovered that Firefox incorrectly handled certain memory when using a\n MessagePort. An attacker could potentially exploit this issue to cause a\n denial of service. (CVE-2023-6205)\n \n It discovered that Firefox incorrectly did not properly manage ownership\n in ReadableByteStreams. An attacker could potentially exploit this issue\n to cause a denial of service. (CVE-2023-6207)\n \n It discovered that Firefox incorrectly did not properly manage copy\n operations when using Selection API in X11. An attacker could potentially\n exploit this issue to obtain sensitive information. (CVE-2023-6208)\n \n Rachmat Abdul Rokhim discovered incorrectly handled parsing of relative\n URLS starting with \"///\". An attacker could potentially exploit this issue\n to cause a denial of service. (CVE-2023-6209)\n","status":"published","published":"2023-12-04T02:22:47Z","modified":"2026-04-22T10:41:33.124906Z","updated_at":"2026-11-02T16:58:17.305935Z"}]}}