{"schemaVersion":3,"id":"USN-4308-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"twisted vulnerabilities\n\nit was discovered that Twisted incorrectly validated or sanitized certain\nURIs or HTTP methods. A remote attacker could use this issue to inject\ninvalid characters and possibly perform header injection attacks.\n(CVE-2019-12387)\n\nIt was discovered that Twisted incorrectly verified XMPP TLS certificates.\nA remote attacker could possibly use this issue to perform a\nmachine-in-the-middle attack and obtain sensitive information. (CVE-2019-12855)\n\nIt was discovered that Twisted incorrectly handled HTTP/2 connections. A\nremote attacker could possibly use this issue to cause Twisted to hang or\nconsume resources, leading to a denial of service. This issue only affected\nUbuntu 18.04 LTS and Ubuntu 19.10. (CVE-2019-9512, CVE-2019-9514,\nCVE-2019-9515)\n\nJake Miller and ZeddYu Lu discovered that Twisted incorrectly handled\ncertain content-length headers. A remote attacker could possibly use this\nissue to perform HTTP request splitting attacks. (CVE-2020-10108,\nCVE-2020-10109)","dates":{"published":"2020-03-19T17:18:55.000Z","modified":"2026-04-27T15:48:43.343Z","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":"twisted","name":"twisted","label":"twisted","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/twisted","purlType":"deb","versions":[{"text":"< 16.0.0-1ubuntu0.4","noFixRecorded":false,"fixedIn":null},{"text":"< 17.9.0-2ubuntu0.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 16.0.0-1ubuntu0.4 | < 17.9.0-2ubuntu0.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4308-1","label":"ubuntu.com/security/notices/USN-4308-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-9512","label":"ubuntu.com/security/CVE-2019-9512","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-9514","label":"ubuntu.com/security/CVE-2019-9514","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-9515","label":"ubuntu.com/security/CVE-2019-9515","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-12387","label":"ubuntu.com/security/CVE-2019-12387","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-12855","label":"ubuntu.com/security/CVE-2019-12855","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-10108","label":"ubuntu.com/security/CVE-2020-10108","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-10109","label":"ubuntu.com/security/CVE-2020-10109","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2019-12387","CVE-2019-12855","CVE-2019-9512","CVE-2019-9514","CVE-2019-9515","CVE-2020-10108","CVE-2020-10109"],"downstream":[],"duplicates":[],"related":["CVE-2019-12387","CVE-2019-12855","CVE-2019-9512","CVE-2019-9514","CVE-2019-9515","CVE-2020-10108","CVE-2020-10109"]},"timeline":[{"kind":"published","date":"2020-03-19T17:18:55.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T15:48:43.343Z","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":"2026-10-20T04:08:01.776Z","stale":false,"partial":false}}