{"id":"USN-4637-2","summary":"firefox vulnerabilities","details":"USN-4637-1 fixed vulnerabilities in Firefox. This update provides the\ncorresponding updates for Ubuntu 16.04 LTS.\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 cause a denial of service, obtain sensitive\n information across origins, bypass security restrictions, conduct phishing\n attacks, conduct cross-site scripting (XSS) attacks, bypass Content\n Security Policy (CSP) restrictions, conduct DNS rebinding attacks, or\n execute arbitrary code.\n","modified":"2026-04-22T10:10:00.571772Z","published":"2020-11-19T20:12:46Z","related":["UBUNTU-CVE-2020-16012","UBUNTU-CVE-2020-26951","UBUNTU-CVE-2020-26952","UBUNTU-CVE-2020-26953","UBUNTU-CVE-2020-26956","UBUNTU-CVE-2020-26958","UBUNTU-CVE-2020-26959","UBUNTU-CVE-2020-26960","UBUNTU-CVE-2020-26961","UBUNTU-CVE-2020-26962","UBUNTU-CVE-2020-26963","UBUNTU-CVE-2020-26965","UBUNTU-CVE-2020-26967","UBUNTU-CVE-2020-26968","UBUNTU-CVE-2020-26969"],"upstream":["CVE-2020-16012","CVE-2020-26951","CVE-2020-26952","CVE-2020-26953","CVE-2020-26956","CVE-2020-26958","CVE-2020-26959","CVE-2020-26960","CVE-2020-26961","CVE-2020-26962","CVE-2020-26963","CVE-2020-26965","CVE-2020-26967","CVE-2020-26968","CVE-2020-26969","UBUNTU-CVE-2020-16012","UBUNTU-CVE-2020-26951","UBUNTU-CVE-2020-26952","UBUNTU-CVE-2020-26953","UBUNTU-CVE-2020-26956","UBUNTU-CVE-2020-26958","UBUNTU-CVE-2020-26959","UBUNTU-CVE-2020-26960","UBUNTU-CVE-2020-26961","UBUNTU-CVE-2020-26962","UBUNTU-CVE-2020-26963","UBUNTU-CVE-2020-26965","UBUNTU-CVE-2020-26967","UBUNTU-CVE-2020-26968","UBUNTU-CVE-2020-26969"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4637-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-16012"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26951"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26952"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26953"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26956"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26958"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26959"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26960"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26961"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26962"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26963"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26965"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26967"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26968"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26969"}],"affected":[{"package":{"name":"firefox","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/firefox@83.0+build2-0ubuntu0.16.04.3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"83.0+build2-0ubuntu0.16.04.3"}]}],"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","56.0+build6-0ubuntu0.16.04.2","57.0+build4-0ubuntu0.16.04.5","57.0+build4-0ubuntu0.16.04.6","57.0.1+build2-0ubuntu0.16.04.1","57.0.3+build1-0ubuntu0.16.04.1","57.0.4+build1-0ubuntu0.16.04.1","58.0+build6-0ubuntu0.16.04.1","58.0.1+build1-0ubuntu0.16.04.1","58.0.2+build1-0ubuntu0.16.04.1","59.0+build5-0ubuntu0.16.04.1","59.0.1+build1-0ubuntu0.16.04.1","59.0.2+build1-0ubuntu0.16.04.1","59.0.2+build1-0ubuntu0.16.04.3","60.0+build2-0ubuntu0.16.04.1","60.0.1+build2-0ubuntu0.16.04.1","60.0.2+build1-0ubuntu0.16.04.1","61.0+build3-0ubuntu0.16.04.2","61.0.1+build1-0ubuntu0.16.04.1","62.0+build2-0ubuntu0.16.04.3","62.0+build2-0ubuntu0.16.04.4","62.0+build2-0ubuntu0.16.04.5","62.0.3+build1-0ubuntu0.16.04.2","63.0+build2-0ubuntu0.16.04.2","63.0.3+build1-0ubuntu0.16.04.1","64.0+build3-0ubuntu0.16.04.1","65.0+build2-0ubuntu0.16.04.1","65.0.1+build2-0ubuntu0.16.04.1","66.0+build3-0ubuntu0.16.04.2","66.0.1+build1-0ubuntu0.16.04.1","66.0.2+build1-0ubuntu0.16.04.1","66.0.3+build1-0ubuntu0.16.04.1","66.0.4+build3-0ubuntu0.16.04.1","66.0.5+build1-0ubuntu0.16.04.1","67.0+build2-0ubuntu0.16.04.1","67.0.1+build1-0ubuntu0.16.04.1","67.0.2+build2-0ubuntu0.16.04.1","67.0.3+build1-0ubuntu0.16.04.1","67.0.4+build1-0ubuntu0.16.04.1","68.0+build3-0ubuntu0.16.04.1","68.0.1+build1-0ubuntu0.16.04.1","68.0.2+build1-0ubuntu0.16.04.1","69.0+build2-0ubuntu0.16.04.4","69.0.1+build1-0ubuntu0.16.04.1","69.0.2+build1-0ubuntu0.16.04.1","70.0+build2-0ubuntu0.16.04.1","70.0.1+build1-0ubuntu0.16.04.1","71.0+build5-0ubuntu0.16.04.1","72.0.1+build1-0ubuntu0.16.04.1","72.0.2+build1-0ubuntu0.16.04.1","73.0.1+build1-0ubuntu0.16.04.1","74.0+build3-0ubuntu0.16.04.1","74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subscription required","binaries":[{"binary_version":"83.0+build2-0ubuntu0.16.04.3","binary_name":"firefox"},{"binary_version":"83.0+build2-0ubuntu0.16.04.3","binary_name":"firefox-geckodriver"},{"binary_version":"83.0+build2-0ubuntu0.16.04.3","binary_name":"firefox-mozsymbols"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4637-2.json","cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-16012"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26951"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26952"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26953"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26956"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26958"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26959"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26960"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26961"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2020-26962"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2020-26963"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2020-26965"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2020-26967"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26968"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-26969"}]}}}],"schema_version":"1.7.5"}