CVE-2021-25746

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{"affected": [{"affectedData": [{"product": "Kubernetes ingress-nginx", "vendor": "Kubernetes", "versions": [{"lessThan": "1.2.0", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "jordan@liggitt.net"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:kubernetes:ingress-nginx:*:*:*:*:*:*:*:*", "matchCriteriaId": "7DD01B7D-743B-41AF-9D8F-D8C6038E6BD0", "versionEndExcluding": "1.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster."}, {"lang": "es", "value": "Se ha detectado un problema de seguridad en ingress-nginx en el que un usuario que puede crear o actualizar objetos ingress puede usar .metadata.annotations en un objeto Ingress (en el grupo networking.k8s.io o extensions API) para obtener las credenciales del controlador ingress-nginx. En la configuraci\u00f3n por defecto, esa credencial presenta acceso a todos los secretos del cl\u00faster"}], "id": "CVE-2021-25746", "lastModified": "2026-06-17T03:42:23.623", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 5.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.7, "source": "jordan@liggitt.net", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-05-06T01:15:09.180", "references": [{"source": "jordan@liggitt.net", "tags": ["Issue Tracking", "Mitigation", "Third Party Advisory"], "url": "https://github.com/kubernetes/ingress-nginx/issues/8503"}, {"source": "jordan@liggitt.net", "tags": ["Issue Tracking", "Mitigation", "Third Party Advisory"], "url": "https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQ"}, {"source": "jordan@liggitt.net", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20220609-0006/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Mitigation", "Third Party Advisory"], "url": "https://github.com/kubernetes/ingress-nginx/issues/8503"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Mitigation", "Third Party Advisory"], "url": "https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQ"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20220609-0006/"}], "sourceIdentifier": "jordan@liggitt.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "jordan@liggitt.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Upstream acknowledges Kubernetes Security Response Committee as the original reporter.", "bugzilla": {"description": "k8s.io/ingress-nginx: directive injection via annotations", "id": "2076618", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2076618"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N", "status": "draft"}, "cwe": "CWE-20->CWE-179", "details": ["A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.", "A flaw was found in the ingress-nginx controller. When a user creates or updates ingress objects, credentials of the ingress-nginx controller can be obtained by accessing .metadata.annotations."], "name": "CVE-2021-25746", "package_state": [{"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "rhacm2/management-ingress-rhel8", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}], "public_date": "2022-04-22T16:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-25746\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-25746"], "threat_severity": "Important"}

{}