{"schemaVersion":3,"id":"USN-3874-1","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, gain additional\nprivileges by escaping the sandbox, or execute arbitrary code.\n(CVE-2018-18500, CVE-2018-18501, CVE-2018-18502, CVE-2018-18503,\nCVE-2018-18504, CVE-2018-18505)\n\nIt was discovered that Firefox allowed PAC files to specify that requests\nto localhost are sent through the proxy to another server. If proxy\nauto-detection is enabled, an attacker could potentially exploit this to\nconduct attacks on local services and tools. (CVE-2018-18506)","dates":{"published":"2019-01-30T22:43:28.000Z","modified":"2026-04-22T09:54:06.315Z","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":"< 65.0+build2-0ubuntu0.14.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 65.0+build2-0ubuntu0.16.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 65.0+build2-0ubuntu0.18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 65.0+build2-0ubuntu0.14.04.1 | < 65.0+build2-0ubuntu0.16.04.1 | < 65.0+build2-0ubuntu0.18.04.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-3874-1","label":"ubuntu.com/security/notices/USN-3874-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-18500","label":"ubuntu.com/security/CVE-2018-18500","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-18501","label":"ubuntu.com/security/CVE-2018-18501","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-18502","label":"ubuntu.com/security/CVE-2018-18502","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-18503","label":"ubuntu.com/security/CVE-2018-18503","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-18504","label":"ubuntu.com/security/CVE-2018-18504","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-18505","label":"ubuntu.com/security/CVE-2018-18505","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-18506","label":"ubuntu.com/security/CVE-2018-18506","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2018-18500","CVE-2018-18501","CVE-2018-18502","CVE-2018-18503","CVE-2018-18504","CVE-2018-18505","CVE-2018-18506"],"downstream":[],"duplicates":[],"related":["CVE-2018-18500","CVE-2018-18501","CVE-2018-18502","CVE-2018-18503","CVE-2018-18504","CVE-2018-18505","CVE-2018-18506"]},"timeline":[{"kind":"published","date":"2019-01-30T22:43:28.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T09:54:06.315Z","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":"2026-10-19T08:22:11.684Z","stale":false,"partial":false}}