{"schemaVersion":3,"id":"USN-3801-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"firefox vulnerabilities\n\nMultiple security issues were discovered in Firefox. If a user were\ntricked in to opening a specially crafted website, an attacker could\npotentially exploit these to cause a denial of service, bypass CSP\nrestrictions, spoof the protocol registration notification bar, leak\nSameSite cookies, bypass mixed content warnings, or execute arbitrary\ncode. (CVE-2018-12388, CVE-2018-12390, CVE-2018-12392, CVE-2018-12393,\nCVE-2018-12398, CVE-2018-12399, CVE-2018-12401, CVE-2018-12402,\nCVE-2018-12403)\n\nMultiple security issues were discovered with WebExtensions in Firefox.\nIf a user were tricked in to installing a specially crafted extension, an\nattacker could potentially exploit these to bypass domain restrictions,\ngain additional privileges, or run content scripts in local pages without\npermission. (CVE-2018-12395, CVE-2018-12396, CVE-2018-12397)","dates":{"published":"2018-10-24T18:57:10.000Z","modified":"2026-04-22T09:51:48.205Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/firefox","purlType":"deb","versions":[{"text":"< 63.0+build2-0ubuntu0.14.04.2","noFixRecorded":false,"fixedIn":null},{"text":"< 63.0+build2-0ubuntu0.16.04.2","noFixRecorded":false,"fixedIn":null},{"text":"< 63.0+build2-0ubuntu0.18.04.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 63.0+build2-0ubuntu0.14.04.2 | < 63.0+build2-0ubuntu0.16.04.2 | < 63.0+build2-0ubuntu0.18.04.2","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-3801-1","label":"ubuntu.com/security/notices/USN-3801-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-12388","label":"ubuntu.com/security/CVE-2018-12388","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12390","label":"ubuntu.com/security/CVE-2018-12390","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12392","label":"ubuntu.com/security/CVE-2018-12392","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12393","label":"ubuntu.com/security/CVE-2018-12393","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12395","label":"ubuntu.com/security/CVE-2018-12395","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12396","label":"ubuntu.com/security/CVE-2018-12396","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12397","label":"ubuntu.com/security/CVE-2018-12397","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12398","label":"ubuntu.com/security/CVE-2018-12398","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12399","label":"ubuntu.com/security/CVE-2018-12399","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12401","label":"ubuntu.com/security/CVE-2018-12401","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12402","label":"ubuntu.com/security/CVE-2018-12402","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-12403","label":"ubuntu.com/security/CVE-2018-12403","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2018-12388","CVE-2018-12390","CVE-2018-12392","CVE-2018-12393","CVE-2018-12395","CVE-2018-12396","CVE-2018-12397","CVE-2018-12398","CVE-2018-12399","CVE-2018-12401","CVE-2018-12402","CVE-2018-12403"],"downstream":[],"duplicates":[],"related":["CVE-2018-12388","CVE-2018-12390","CVE-2018-12392","CVE-2018-12393","CVE-2018-12395","CVE-2018-12396","CVE-2018-12397","CVE-2018-12398","CVE-2018-12399","CVE-2018-12401","CVE-2018-12402","CVE-2018-12403"]},"timeline":[{"kind":"published","date":"2018-10-24T18:57:10.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T09:51:48.205Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T18:42:52.113Z","stale":false,"partial":false}}