{"schemaVersion":3,"id":"USN-5675-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"heimdal vulnerabilities\n\nIsaac Boukris and Andrew Bartlett discovered that Heimdal's KDC was\nnot properly performing checksum algorithm verifications in the\nS4U2Self extension module. An attacker could possibly use this issue\nto perform a machine-in-the-middle attack and request S4U2Self\ntickets for any user known by the application. This issue only\naffected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and Ubuntu 18.04 LTS.\n(CVE-2018-16860)\n\nIt was discovered that Heimdal was not properly handling the\nverification of key exchanges when an anonymous PKINIT was being\nused. An attacker could possibly use this issue to perform a\nmachine-in-the-middle attack and expose sensitive information.\nThis issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and\nUbuntu 18.04 LTS. (CVE-2019-12098)\n\nJoseph Sutton discovered that Heimdal was not properly handling\nmemory management operations when dealing with TGS-REQ tickets that\nwere missing information. An attacker could possibly use this issue\nto cause a denial of service. (CVE-2021-3671)\n\nMichał Kępień discovered that Heimdal was not properly handling\nlogical conditions that related to memory management operations. An\nattacker could possibly use this issue to cause a denial of service.\n(CVE-2022-3116)","dates":{"published":"2022-10-13T18:39:02.000Z","modified":"2026-06-29T13:48:24.901Z","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":"heimdal","name":"heimdal","label":"heimdal","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/heimdal","purlType":"deb","versions":[{"text":"< 1.6~git20131207+dfsg-1ubuntu1.2+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 7.5.0+dfsg-1ubuntu0.1","noFixRecorded":false,"fixedIn":null},{"text":"< 7.7.0+dfsg-1ubuntu1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.6~git20131207+dfsg-1ubuntu1.2+esm1 | < 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1 | < 7.5.0+dfsg-1ubuntu0.1 | < 7.7.0+dfsg-1ubuntu1.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5675-1","label":"ubuntu.com/security/notices/USN-5675-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-16860","label":"ubuntu.com/security/CVE-2018-16860","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2019-12098","label":"ubuntu.com/security/CVE-2019-12098","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-3671","label":"ubuntu.com/security/CVE-2021-3671","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-3116","label":"ubuntu.com/security/CVE-2022-3116","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2018-16860","CVE-2019-12098","CVE-2021-3671","CVE-2022-3116"],"downstream":[],"duplicates":[],"related":["CVE-2018-16860","CVE-2019-12098","CVE-2021-3671","CVE-2022-3116"]},"timeline":[{"kind":"published","date":"2022-10-13T18:39:02.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-29T13:48:24.901Z","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":"2026-10-20T04:41:06.078Z","stale":false,"partial":false}}