CVE-2021-3621

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This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en SSSD, donde el comando sssctl era vulnerable a la inyecci\u00f3n de comandos de shell por medio de los subcomandos logs-fetch y cache-expire. Este fallo permite a un atacante enga\u00f1ar al usuario root para que ejecute un comando sssctl especialmente dise\u00f1ado, por ejemplo por medio de sudo, para conseguir acceso de root. La mayor amenaza de esta vulnerabilidad es para la confidencialidad, la integridad y la disponibilidad del sistema"}], "id": "CVE-2021-3621", "lastModified": "2026-06-17T04:05:27.413", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 9.3, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-12-23T21:15:08.920", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1975142"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00028.html"}, {"source": "secalert@redhat.com", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://sssd.io/release-notes/sssd-2.6.0.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1975142"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00028.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00008.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://sssd.io/release-notes/sssd-2.6.0.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-78"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "This issue was discovered by Cedric Buissart (Red Hat).", "affected_release": [{"advisory": "RHSA-2021:3336", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "sssd-0:1.16.5-10.el7_9.10", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-08-31T00:00:00Z"}, {"advisory": "RHSA-2021:3151", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "sssd-0:2.4.0-9.el8_4.2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3178", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "sssd-0:2.2.0-19.el8_1.2", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-08-17T00:00:00Z"}, {"advisory": "RHSA-2021:3365", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "sssd-0:2.2.3-20.el8_2.1", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-08-31T00:00:00Z"}, {"advisory": "RHSA-2021:3477", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "redhat-virtualization-host-0:4.3.18-20210903.0.el7_9", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7", "release_date": "2021-09-09T00:00:00Z"}, {"advisory": "RHSA-2021:3235", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "redhat-virtualization-host-0:4.4.7-20210804.0.el8_4", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2021-08-19T00:00:00Z"}], "bugzilla": {"description": "sssd: shell command injection in sssctl", "id": "1975142", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1975142"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-77->CWE-78", "details": ["A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands. This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.", "A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands. This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-3621", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "sssd", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "sssd", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-08-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3621\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3621"], "statement": "This flaw is exploitable only when root is tricked into running a specially crafted command. The most likely scenario is when users are allowed to run a sssctl command via a dedicated `sudo` rule.", "threat_severity": "Important"}

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