{"schemaVersion":3,"id":"USN-6267-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"firefox vulnerabilities\n\nMultiple security issues were discovered in Firefox. If a user were\ntricked into opening a specially crafted website, an attacker could\npotentially exploit these to cause a denial of service, obtain sensitive\ninformation across domains, or execute arbitrary code. (CVE-2023-4047,\nCVE-2023-4048, CVE-2023-4049, CVE-2023-4051, CVE-2023-4053, CVE-2023-4055,\nCVE-2023-4056, CVE-2023-4057, CVE-2023-4058)\n\nMax Vlasov discovered that Firefox Offscreen Canvas did not properly track\ncross-origin tainting. An attacker could potentially exploit this issue to\naccess image data from another site in violation of same-origin policy.\n(CVE-2023-4045)\n\nAlexander Guryanov discovered that Firefox did not properly update the\nvalue of a global variable in WASM JIT analysis in some circumstances. An\nattacker could potentially exploit this issue to cause a denial of service.\n(CVE-2023-4046)\n\nMark Brand discovered that Firefox did not properly validate the size of\nan untrusted input stream. An attacker could potentially exploit this issue\nto cause a denial of service. (CVE-2023-4050)","dates":{"published":"2023-08-02T06:19:10.000Z","modified":"2026-04-22T10:37:08.737Z","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":"< 116.0+build2-0ubuntu0.20.04.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 116.0+build2-0ubuntu0.20.04.2","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-6267-1","label":"ubuntu.com/security/notices/USN-6267-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-4045","label":"ubuntu.com/security/CVE-2023-4045","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4046","label":"ubuntu.com/security/CVE-2023-4046","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4047","label":"ubuntu.com/security/CVE-2023-4047","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4048","label":"ubuntu.com/security/CVE-2023-4048","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4049","label":"ubuntu.com/security/CVE-2023-4049","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4050","label":"ubuntu.com/security/CVE-2023-4050","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4051","label":"ubuntu.com/security/CVE-2023-4051","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4053","label":"ubuntu.com/security/CVE-2023-4053","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4055","label":"ubuntu.com/security/CVE-2023-4055","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4056","label":"ubuntu.com/security/CVE-2023-4056","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4057","label":"ubuntu.com/security/CVE-2023-4057","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-4058","label":"ubuntu.com/security/CVE-2023-4058","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2023-4045","CVE-2023-4046","CVE-2023-4047","CVE-2023-4048","CVE-2023-4049","CVE-2023-4050","CVE-2023-4051","CVE-2023-4053","CVE-2023-4055","CVE-2023-4056","CVE-2023-4057","CVE-2023-4058"],"downstream":[],"duplicates":[],"related":["CVE-2023-4045","CVE-2023-4046","CVE-2023-4047","CVE-2023-4048","CVE-2023-4049","CVE-2023-4050","CVE-2023-4051","CVE-2023-4053","CVE-2023-4055","CVE-2023-4056","CVE-2023-4057","CVE-2023-4058"]},"timeline":[{"kind":"published","date":"2023-08-02T06:19:10.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T10:37:08.737Z","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":"2026-10-20T10:12:57.836Z","stale":false,"partial":false}}