{"schemaVersion":3,"id":"USN-5079-4","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"curl regression\n\nUSN-5079-2 fixed vulnerabilities in curl. One of the fixes introduced a\nregression. This update fixes the problem.\n\nOriginal advisory details:\n\n Patrick Monnerat discovered that curl incorrectly handled upgrades to TLS.\n When receiving certain responses from servers, curl would continue without\n TLS even when the option to require a successful upgrade to TLS was\n specified. (CVE-2021-22946)\n\n Patrick Monnerat discovered that curl incorrectly handled responses\n received before STARTTLS. A remote attacker could possibly use this issue\n to inject responses and intercept communications. (CVE-2021-22947)","dates":{"published":"2021-09-21T13:07:33.000Z","modified":"2026-06-29T13:49:31.976Z","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":"curl","name":"curl","label":"curl","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/curl","purlType":"deb","versions":[{"text":"< 7.35.0-1ubuntu2.20+esm9","noFixRecorded":false,"fixedIn":null},{"text":"< 7.47.0-1ubuntu2.19+esm2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.35.0-1ubuntu2.20+esm9 | < 7.47.0-1ubuntu2.19+esm2","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5079-4","label":"ubuntu.com/security/notices/USN-5079-4","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://launchpad.net/bugs/1944120","label":"launchpad.net/bugs/1944120","hostname":"launchpad.net","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2021-22947"]},"timeline":[{"kind":"published","date":"2021-09-21T13:07:33.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-29T13:49:31.976Z","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":"2026-10-19T14:24:25.190Z","stale":false,"partial":false}}