Vulnerabilidad · Publicado 25/08/2026
Una falla en el manejo de sensibilidad de mayúsculas en Cloud Foundry UAA permite que atacantes autenticados con autoridad zones.write eludan restricciones y accedan a la zona de identidad privilegiada (uaa del sistema). Afecta infraestructuras PaaS en LATAM que dependen de Cloud Foundry para control de acceso y gestión de identidades en entornos multi-tenant.
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.
Score: 8.7/10 — Severidad: HIGH — Estado NIST: Received
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
CWE-178
Publicado en NIST NVD.