{"schemaVersion":3,"id":"USN-4353-1","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 security\nrestrictions, spoof the URL bar, or execute arbitrary code.\n(CVE-2020-6831, CVE-2020-12387, CVE-2020-12390, CVE-2020-12391,\nCVE-2020-12394, CVE-2020-12395, CVE-2020-12396)\n\nIt was discovered that the Devtools’ ‘Copy as cURL’ feature did not\nproperly escape the HTTP POST data of a request. If a user were tricked in to\nusing the ‘Copy as cURL’ feature to copy and paste a command with\nspecially crafted data in to a terminal, an attacker could potentially\nexploit this to obtain sensitive information from local files.\n(CVE-2020-12392)","dates":{"published":"2020-05-07T13:24:40.000Z","modified":"2026-04-22T10:03:43.895Z","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":"< 76.0+build2-0ubuntu0.16.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 76.0+build2-0ubuntu0.18.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 76.0+build2-0ubuntu0.20.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 76.0+build2-0ubuntu0.16.04.1 | < 76.0+build2-0ubuntu0.18.04.1 | < 76.0+build2-0ubuntu0.20.04.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4353-1","label":"ubuntu.com/security/notices/USN-4353-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-6831","label":"ubuntu.com/security/CVE-2020-6831","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12387","label":"ubuntu.com/security/CVE-2020-12387","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12390","label":"ubuntu.com/security/CVE-2020-12390","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12391","label":"ubuntu.com/security/CVE-2020-12391","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12392","label":"ubuntu.com/security/CVE-2020-12392","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12394","label":"ubuntu.com/security/CVE-2020-12394","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12395","label":"ubuntu.com/security/CVE-2020-12395","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-12396","label":"ubuntu.com/security/CVE-2020-12396","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-12387","CVE-2020-12390","CVE-2020-12391","CVE-2020-12392","CVE-2020-12394","CVE-2020-12395","CVE-2020-12396","CVE-2020-6831"],"downstream":[],"duplicates":[],"related":["CVE-2020-12387","CVE-2020-12390","CVE-2020-12391","CVE-2020-12392","CVE-2020-12394","CVE-2020-12395","CVE-2020-12396","CVE-2020-6831"]},"timeline":[{"kind":"published","date":"2020-05-07T13:24:40.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T10:03:43.895Z","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":"2026-10-20T19:13:11.429Z","stale":false,"partial":false}}