{"api_version":"1","generated_at":"2026-07-23T11:25:41+00:00","cve":"CVE-2021-44512","urls":{"html":"https://cve.report/CVE-2021-44512","api":"https://cve.report/api/cve/CVE-2021-44512.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-44512","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-44512"},"summary":{"title":"CVE-2021-44512","description":"World-writable permissions on the /tmp/tmate/sessions directory in tmate-ssh-server 2.3.0 allow a local attacker to compromise the integrity of session handling, or obtain the read-write session ID from a read-only session symlink in this directory.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2021-12-07 03:15:00","updated_at":"2022-05-03 16:04:00"},"problem_types":["CWE-732"],"metrics":[],"references":[{"url":"https://github.com/tmate-io/tmate-ssh-server/commit/1c020d1f5ca462f5b150b46a027aaa1bbe3c9596","name":"https://github.com/tmate-io/tmate-ssh-server/commit/1c020d1f5ca462f5b150b46a027aaa1bbe3c9596","refsource":"MISC","tags":[],"title":"Harden /tmp/tmate directory · tmate-io/tmate-ssh-server@1c020d1 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.openwall.com/lists/oss-security/2021/12/06/2","name":"https://www.openwall.com/lists/oss-security/2021/12/06/2","refsource":"MISC","tags":[],"title":"oss-security - tmate-ssh-server: Local Privilege Escalation Issues and DoS issues\n (CVE-2021-44512, CVE-2021-44513)","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-44512","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44512","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"44512","vulnerable":"1","versionEndIncluding":"2.3.0","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"tmate","cpe5":"tmate-ssh-server","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-44512","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"World-writable permissions on the /tmp/tmate/sessions directory in tmate-ssh-server 2.3.0 allow a local attacker to compromise the integrity of session handling, or obtain the read-write session ID from a read-only session symlink in this directory."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://github.com/tmate-io/tmate-ssh-server/commit/1c020d1f5ca462f5b150b46a027aaa1bbe3c9596","refsource":"MISC","name":"https://github.com/tmate-io/tmate-ssh-server/commit/1c020d1f5ca462f5b150b46a027aaa1bbe3c9596"},{"refsource":"MISC","name":"https://www.openwall.com/lists/oss-security/2021/12/06/2","url":"https://www.openwall.com/lists/oss-security/2021/12/06/2"}]}},"nvd":{"publishedDate":"2021-12-07 03:15:00","lastModifiedDate":"2022-05-03 16:04:00","problem_types":["CWE-732"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH"},"exploitabilityScore":1,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:P/I:P/A:P","accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":4.4},"severity":"MEDIUM","exploitabilityScore":3.4,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:tmate:tmate-ssh-server:*:*:*:*:*:*:*:*","versionEndIncluding":"2.3.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"44512","Ordinal":"222269","Title":"CVE-2021-44512","CVE":"CVE-2021-44512","Year":"2021"},"notes":[]}}}