CVE-2021-4122

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An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium."}, {"lang": "es", "value": "Se ha detectado que un encabezado LUKS especialmente dise\u00f1ada pod\u00eda enga\u00f1ar a cryptsetup para que deshabilitara el cifrado durante la recuperaci\u00f3n del dispositivo. Un atacante con acceso f\u00edsico al medio, como un disco flash, podr\u00eda usar este fallo para forzar a un usuario a deshabilitar permanentemente la capa de cifrado de ese medio."}], "id": "CVE-2021-4122", "lastModified": "2026-10-14T11:16:54.753", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "PHYSICAL", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 0.7, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-08-24T16:15:09.427", "references": [{"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-4122"}, {"source": "secalert@redhat.com", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2031859"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2032401"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c"}, {"source": "secalert@redhat.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-4122"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2031859"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2032401"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-345"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-345"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Milan Broz for reporting this issue.", "affected_release": [{"advisory": "RHSA-2022:0370", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "cryptsetup-0:2.3.3-4.el8_5.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-02-01T00:00:00Z"}, {"advisory": "RHSA-2022:0370", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "cryptsetup-0:2.3.3-4.el8_5.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-02-01T00:00:00Z"}], "bugzilla": {"description": "cryptsetup: disable encryption via header rewrite", "id": "2032401", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2032401"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "status": "verified"}, "cwe": "CWE-349", "details": ["It was found that a specially crafted LUKS header could trick cryptsetup into disabling encryption during the recovery of the device. An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium.", "It was found that a specially crafted LUKS header could trick cryptsetup into disabling encryption during the recovery of the device. An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium."], "name": "CVE-2021-4122", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "cryptsetup", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "cryptsetup", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2022-01-13T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-4122\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-4122\nhttps://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes"], "statement": "Red Hat Enterprise Linux version 7 and older are not affected since they do not support online reencryption.", "threat_severity": "Moderate"}

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