{"schemaVersion":3,"id":"USN-6455-2","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"exim4 regression\n\nUSN-6455-1 fixed vulnerabilities in Exim. The fix for CVE-2023-42117\nintroduced a regression on Ubuntu 22.04 LTS that resulted in certain\nconnections logging a Taint mismatch error. This update fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n It was discovered that Exim incorrectly handled validation of user-supplied\n data, which could lead to memory corruption. A remote attacker could\n possibly use this issue to execute arbitrary code. (CVE-2023-42117)\n\n It was discovered that Exim incorrectly handled validation of user-supplied\n data, which could lead to an out-of-bounds read. An attacker could possibly\n use this issue to expose sensitive information. (CVE-2023-42119)","dates":{"published":"2026-06-10T12:22:10.000Z","modified":"2026-06-10T18:29:40.119Z","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":"exim4","name":"exim4","label":"exim4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/exim4","purlType":"deb","versions":[{"text":"< 4.95-4ubuntu2.10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.95-4ubuntu2.10","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-6455-2","label":"ubuntu.com/security/notices/USN-6455-2","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://launchpad.net/bugs/2152830","label":"launchpad.net/bugs/2152830","hostname":"launchpad.net","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2023-42117"]},"timeline":[{"kind":"published","date":"2026-06-10T12:22:10.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-10T18:29:40.119Z","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":"2026-10-20T07:10:07.477Z","stale":false,"partial":false}}