{"schemaVersion":3,"id":"USN-6453-2","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"xorg-server vulnerabilities\n\nUSN-6453-1 fixed several vulnerabilities in X.Org. This update provides\nthe corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and\nUbuntu 18.04 LTS.\n\nOriginal advisory details:\n\n Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled\n prepending values to certain properties. An attacker could possibly use\n this issue to cause the X Server to crash, execute arbitrary code, or\n escalate privileges. (CVE-2023-5367)\n\n Sri discovered that the X.Org X Server incorrectly handled detroying\n windows in certain legacy multi-screen setups. An attacker could possibly\n use this issue to cause the X Server to crash, execute arbitrary code, or\n escalate privileges. (CVE-2023-5380)","dates":{"published":"2023-10-31T15:16:46.000Z","modified":"2026-06-29T13:50:54.430Z","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":"xorg-server","name":"xorg-server","label":"xorg-server","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/xorg-server","purlType":"deb","versions":[{"text":"< 2:1.15.1-0ubuntu2.11+esm8","noFixRecorded":false,"fixedIn":null},{"text":"< 2:1.18.4-0ubuntu0.12+esm6","noFixRecorded":false,"fixedIn":null},{"text":"< 2:1.19.6-1ubuntu4.15+esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2:1.15.1-0ubuntu2.11+esm8 | < 2:1.18.4-0ubuntu0.12+esm6 | < 2:1.19.6-1ubuntu4.15+esm1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-6453-2","label":"ubuntu.com/security/notices/USN-6453-2","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-5367","label":"ubuntu.com/security/CVE-2023-5367","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-5380","label":"ubuntu.com/security/CVE-2023-5380","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2023-5367","CVE-2023-5380"],"downstream":[],"duplicates":[],"related":["CVE-2023-5367","CVE-2023-5380"]},"timeline":[{"kind":"published","date":"2023-10-31T15:16:46.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-29T13:50:54.430Z","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":"2026-10-19T22:44:18.566Z","stale":false,"partial":false}}