{"schemaVersion":3,"id":"CVE-2021-37218","aliases":["UBUNTU-CVE-2021-37218","GHSA-c8x3-rg72-fwwg","GO-2022-0591"],"status":"published","duplicateOf":null,"title":null,"description":"HashiCorp Nomad and Nomad Enterprise Raft RPC layer allows non-server agents with a valid certificate signed by the same CA to access server-only functionality, enabling privilege escalation. Fixed in 1.0.10 and 1.1.4.","dates":{"published":"2021-09-07T11:40:36.000Z","modified":"2024-08-04T01:16:03.980Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":6.5,"severity":"medium","vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0067,"percentile":0.51138,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":-0.019000000000000006,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00689},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0067,"percentile":0.51138}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00689,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0067,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0067,"percentile":0.51138}]},"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":[{"id":"CWE-295","name":"Improper Certificate Validation","description":"The product does not validate, or incorrectly validates, a certificate.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/295.html"}],"affected":[{"vendor":"ubuntu","product":"nomad","name":"nomad","label":"nomad","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/nomad","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"github.com/hashicorp","product":"nomad","name":"github.com/hashicorp/nomad","label":"nomad","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/hashicorp/nomad","purlType":"golang","versions":[{"text":"< 1.0.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 1.1.0, < 1.1.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.10 | ≥ 1.1.0, < 1.1.4","eol":null,"hubHref":null},{"vendor":"hashicorp","product":"nomad","name":"nomad","label":"nomad","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.0.10","noFixRecorded":false,"fixedIn":null},{"text":"≤ 1.0.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 1.1.1, < 1.1.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.10 | ≤ 1.0.10 | ≥ 1.1.1, < 1.1.4","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"nomad","label":"Nomad","category":"server-app"}},"hubHref":"/vendor/hashicorp/nomad"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.hashicorp.com/blog/category/nomad","label":"www.hashicorp.com/blog/category/nomad","hostname":"www.hashicorp.com","tags":["X Refsource MISC","REPORT","WEB","Product","Vendor Advisory"]},{"url":"https://discuss.hashicorp.com/t/hcsec-2021-21-nomad-raft-rpc-privilege-escalation/29023","label":"discuss.hashicorp.com/t/hcsec-2021-21-nomad-raft-rpc-privilege-escalation/29023","hostname":"discuss.hashicorp.com","tags":["X Refsource MISC","REPORT","WEB","Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-37218","label":"ubuntu.com/security/CVE-2021-37218","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-37218","label":"www.cve.org/CVERecord?id=CVE-2021-37218","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37218","label":"nvd.nist.gov/vuln/detail/CVE-2021-37218","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/hashicorp/nomad","label":"github.com/hashicorp/nomad","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://github.com/advisories/GHSA-c8x3-rg72-fwwg","label":"github.com/advisories/GHSA-c8x3-rg72-fwwg","hostname":"github.com","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-09-07T11:40:36.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T01:16:03.980Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T23:51:25.096Z","stale":false,"partial":false}}