{"schemaVersion":3,"id":"USN-5822-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"samba vulnerabilities\n\nIt was discovered that Samba incorrectly handled the bad password count\nlogic. A remote attacker could possibly use this issue to bypass bad\npasswords lockouts. This issue was only addressed in Ubuntu 22.10.\n(CVE-2021-20251)\n\nEvgeny Legerov discovered that Samba incorrectly handled buffers in\ncertain GSSAPI routines of Heimdal. A remote attacker could possibly use\nthis issue to cause Samba to crash, resulting in a denial of service.\n(CVE-2022-3437)\n\nTom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos\nkeys. A remote attacker could possibly use this issue to elevate\nprivileges. (CVE-2022-37966, CVE-2022-37967)\n\nIt was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure\nChannel. A remote attacker could possibly use this issue to elevate\nprivileges. (CVE-2022-38023)\n\nGreg Hudson discovered that Samba incorrectly handled PAC parsing. On\n32-bit systems, a remote attacker could use this issue to escalate\nprivileges, or possibly execute arbitrary code. (CVE-2022-42898)\n\nJoseph Sutton discovered that Samba could be forced to issue rc4-hmac\nencrypted Kerberos tickets. A remote attacker could possibly use this issue\nto escalate privileges. This issue only affected Ubuntu 20.04 LTS and\nUbuntu 22.04 LTS. (CVE-2022-45141)\n\nWARNING: The fixes included in these updates introduce several important\nbehavior changes which may cause compatibility problems interacting with\nsystems still expecting the former behavior. Please see the following\nupstream advisories for more information:\n\nhttps://www.samba.org/samba/security/CVE-2022-37966.html\nhttps://www.samba.org/samba/security/CVE-2022-37967.html\nhttps://www.samba.org/samba/security/CVE-2022-38023.html","dates":{"published":"2023-01-24T12:58:42.000Z","modified":"2026-04-27T16:32:25.164Z","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":"samba","name":"samba","label":"samba","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/samba","purlType":"deb","versions":[{"text":"< 2:4.13.17~dfsg-0ubuntu1.20.04.4","noFixRecorded":false,"fixedIn":null},{"text":"< 2:4.15.13+dfsg-0ubuntu1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2:4.13.17~dfsg-0ubuntu1.20.04.4 | < 2:4.15.13+dfsg-0ubuntu1","eol":{"isEol":null,"eolDate":null,"matchMethod":"name_exact","cycle":null,"product":{"name":"samba","label":"Samba","category":"server-app"}},"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5822-1","label":"ubuntu.com/security/notices/USN-5822-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-20251","label":"ubuntu.com/security/CVE-2021-20251","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-3437","label":"ubuntu.com/security/CVE-2022-3437","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-37966","label":"ubuntu.com/security/CVE-2022-37966","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-37967","label":"ubuntu.com/security/CVE-2022-37967","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-38023","label":"ubuntu.com/security/CVE-2022-38023","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-42898","label":"ubuntu.com/security/CVE-2022-42898","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-45141","label":"ubuntu.com/security/CVE-2022-45141","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2021-20251","CVE-2022-3437","CVE-2022-37966","CVE-2022-37967","CVE-2022-38023","CVE-2022-42898","CVE-2022-45141"],"downstream":[],"duplicates":[],"related":["CVE-2021-20251","CVE-2022-3437","CVE-2022-37966","CVE-2022-37967","CVE-2022-38023","CVE-2022-42898","CVE-2022-45141"]},"timeline":[{"kind":"published","date":"2023-01-24T12:58:42.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T16:32:25.164Z","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":"2026-10-20T06:49:58.608Z","stale":false,"partial":false}}