CVE-2021-41617

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"descriptions": [{"lang": "en", "value": "sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user."}, {"lang": "es", "value": "sshd en OpenSSH versiones 6.2 hasta 8.x anteriores a 8.8, cuando son usadas determinadas configuraciones no predeterminadas, permite una escalada de privilegios porque los grupos complementarios no son inicializados como se espera. Los programas de ayuda para AuthorizedKeysCommand y AuthorizedPrincipalsCommand pueden ejecutarse con privilegios asociados a la pertenencia a grupos del proceso sshd, si la configuraci\u00f3n especifica la ejecuci\u00f3n del comando como un usuario diferente"}], "id": "CVE-2021-41617", "lastModified": "2026-11-10T13:17:17.817", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.4, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-41617", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-08T21:05:18.878932Z", "version": "2.0.3"}}]}, "published": "2021-09-26T19:15:07.263", "references": [{"source": "cve@mitre.org", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.suse.com/show_bug.cgi?id=1190975"}, {"source": "cve@mitre.org", "url": "https://lists.debian.org/debian-lts-announce/2023/12/msg00017.html"}, {"source": 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{"affected_release": [{"advisory": "RHSA-2021:4782", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "openssh-0:7.4p1-22.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-11-23T00:00:00Z"}, {"advisory": "RHSA-2022:2013", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "openssh-0:8.0p1-13.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}, {"advisory": "RHSA-2022:2013", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "openssh-0:8.0p1-13.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}], "bugzilla": {"description": "openssh: privilege escalation when AuthorizedKeysCommand or AuthorizedPrincipalsCommand are configured", "id": "2008291", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2008291"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-273", "details": ["sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.", "A flaw was found in OpenSSH. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user. Depending on system configuration, inherited groups may allow AuthorizedKeysCommand/AuthorizedPrincipalsCommand helper programs to gain unintended privileges, potentially leading to local privilege escalation."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2021-41617", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-09-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-41617\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-41617\nhttps://www.openssh.com/txt/release-8.8"], "statement": "Neither the `AuthorizedKeysCommand` directive nor `AuthorizedPrincipalsCommand` are enabled by default in the versions of OpenSSH as shipped with Red Hat Enterprise Linux 7 and 8.", "threat_severity": "Moderate"}

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