CVE-2020-8933

{"id": "CVE-2020-8933", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}], "cvssMetricV40": [{"type": "Secondary", "source": "cve-coordination@google.com", "cvssData": {"safety": "NOT_DEFINED", "version": "4.0", "recovery": "NOT_DEFINED", "baseScore": 9.3, "automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "modifiedAttackVector": "NOT_DEFINED", "integrityRequirements": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "availabilityRequirements": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subsequentSystemIntegrity": "HIGH", "vulnerableSystemIntegrity": "HIGH", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "confidentialityRequirements": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "subsequentSystemAvailability": "HIGH", "vulnerableSystemAvailability": "HIGH", "subsequentSystemConfidentiality": "HIGH", "vulnerableSystemConfidentiality": "HIGH", "modifiedSubsequentSystemIntegrity": "NOT_DEFINED", "modifiedVulnerableSystemIntegrity": "NOT_DEFINED", "modifiedSubsequentSystemAvailability": "NOT_DEFINED", "modifiedVulnerableSystemAvailability": "NOT_DEFINED", "modifiedSubsequentSystemConfidentiality": "NOT_DEFINED", "modifiedVulnerableSystemConfidentiality": "NOT_DEFINED"}}]}, "published": "2020-06-22T14:15:11.847", "references": [{"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve-coordination@google.com"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://cloud.google.com/support/bulletins/#gcp-2020-008", "tags": ["Vendor Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29", "tags": ["Patch", "Third Party Advisory"], "source": "cve-coordination@google.com"}, {"url": "https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020", "tags": ["Exploit", "Third Party Advisory"], "source": "cve-coordination@google.com"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://cloud.google.com/support/bulletins/#gcp-2020-008", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020", "tags": ["Exploit", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "cve-coordination@google.com", "description": [{"lang": "en", "value": "CWE-276"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-276"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in Google Cloud Platform's guest-oslogin versions between 20190304 and 20200507 allows a user that is only granted the role \"roles/compute.osLogin\" to escalate privileges to root. Using the membership to the \"lxd\" group, an attacker can attach host devices and filesystems. Within an lxc container, it is possible to attach the host OS filesystem and modify /etc/sudoers to then gain administrative privileges. All images created after 2020-May-07 (20200507) are fixed, and if you cannot update, we recommend you edit /etc/group/security.conf and remove the \"lxd\" user from the OS Login entry."}, {"lang": "es", "value": "Una vulnerabilidad en las versiones entre 20190304 y 20200507 de guest-oslogin de Google Cloud Platform, permite a un usuario al que solo se le otorg\u00f3 el rol \"roles/compute.osLogin\" para escalar privilegios a root. Usando la membres\u00eda en el grupo \"lxd\", un atacante puede conectar dispositivos host y sistemas de archivos. Dentro de un contenedor lxc, es posible adjuntar el sistema de archivos del sistema operativo host y modificar /etc/sudoers para luego obtener privilegios administrativos. Todas las im\u00e1genes creadas despu\u00e9s del 07 de mayo 2020 (20200507) est\u00e1n corregidas, y si no la pueden actualizar, le recomendamos editar /etc/group/security.conf y eliminar el usuario \"lxd\" desde la entrada de Inicio de Sesi\u00f3n del Sistema Operativo"}], "lastModified": "2024-11-21T05:39:41.643", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:google:guest-oslogin:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9751996A-374C-4002-A06F-CA2B0A5D7609", "versionEndIncluding": "20200507.00", "versionStartIncluding": "20190304.00"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493"}, {"criteria": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B009C22E-30A4-4288-BCF6-C3E81DEAF45A"}], "operator": "OR"}]}], "sourceIdentifier": "cve-coordination@google.com"}