CVE-2026-59335

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "UAA", "vendor": "Cloud Foundry", "versions": [{"lessThan": "78.16.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "78.16.0", "versionType": "semver"}]}, {"defaultStatus": "unknown", "product": "cf-deployment", "vendor": "Cloud Foundry", "versions": [{"lessThan": "57.0.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "57.0.0", "versionType": "semver"}]}], "source": "security@vmware.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper handling of case sensitivity (CWE-178) in the identity zone authorization check in the Identity Zone Endpoint in Cloud Foundry UAA allows a remote authenticated attacker holding only the zones.write authority to bypass the intended restriction that this authority does not grant access to the privileged uaa (system) identity zone, by referring to the zone identifier in a non-lowercase form (e.g. UAA) in the request path and body. The authorization layer performs a case-sensitive comparison against the system zone identifier, while the underlying MySQL persistence layer resolves identifiers case-insensitively under its default collation, so the request is authorized incorrectly and is then resolved against the real system zone record. This allows the attacker to overwrite the system zone's JWT signing key with attacker-controlled key material, forge JWTs claiming the admin client and administrator scopes, and fully compromise UAA and any Cloud Foundry deployment that trusts it. This issue only affects UAA deployments backed by MySQL using its default collation; PostgreSQL and HSQLDB backends are not affected."}, {"lang": "es", "value": "Manejo inadecuado de la distinci\u00f3n entre may\u00fasculas y min\u00fasculas (CWE-178) en la verificaci\u00f3n de autorizaci\u00f3n de la zona de identidad en el Endpoint de Zona de Identidad en Cloud Foundry UAA permite a un atacante remoto autenticado que posee \u00fanicamente la autoridad zones.write eludir la restricci\u00f3n prevista de que esta autoridad no otorga acceso a la zona de identidad privilegiada uaa (del sistema), al referirse al identificador de la zona en una forma que no sea min\u00fascula (p. ej., UAA) en la ruta y el cuerpo de la solicitud. La capa de autorizaci\u00f3n realiza una comparaci\u00f3n que distingue entre may\u00fasculas y min\u00fasculas contra el identificador de la zona del sistema, mientras que la capa de persistencia subyacente de MySQL resuelve los identificadores sin distinguir entre may\u00fasculas y min\u00fasculas bajo su intercalaci\u00f3n predeterminada, por lo que la solicitud se autoriza incorrectamente y luego se resuelve contra el registro real de la zona del sistema. Esto permite al atacante sobrescribir la clave de firma JWT de la zona del sistema con material de clave controlado por el atacante, forjar JWTs que reclaman el cliente admin y los alcances administrator, y comprometer completamente UAA y cualquier despliegue de Cloud Foundry que conf\u00ede en \u00e9l. Este problema solo afecta a los despliegues de UAA respaldados por MySQL que utilizan su intercalaci\u00f3n predeterminada; los backends de PostgreSQL y HSQLDB no se ven afectados."}], "id": "CVE-2026-59335", "lastModified": "2026-09-28T23:10:00.143", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 5.8, "source": "security@vmware.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59335", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-25T13:08:56.301972Z", "version": "2.0.3"}}]}, "published": "2026-08-25T11:16:53.817", "references": [{"source": "security@vmware.com", "url": "https://www.cloudfoundry.org/blog/cve-2026-59335-uaa-case-insensitive-check-bypass/"}], "sourceIdentifier": "security@vmware.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-178"}], "source": "security@vmware.com", "type": "Secondary"}]}

{}

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