CVE-2026-33419
HighSummary
MinIO to system przechowywania obiektów o wysokiej wydajności. Przed wersją RELEASE.2026-03-17T21-25-16Z, punkt końcowy AssumeRoleWithLDAPIdentity w usłudze STS (Security Token Service) był podatny na ataki brute-force na poświadczenia LDAP z powodu dwóch połączonych słabości: rozróżnialnych odpowiedzi błędów umożliwiających enumerację nazw użytkowników oraz braku ograniczeń liczby prób uwierzytelnienia.
Risk Assessment
Nieautoryzowany atakujący w sieci może enumerować ważne nazwy użytkowników LDAP, a następnie przeprowadzać nieograniczone próby zgadywania haseł, co może prowadzić do uzyskania tymczasowych poświadczeń STS i dostępu do zasobów S3 ofiary.
Recommendation
Zaleca się aktualizację do wersji RELEASE.2026-03-17T21-25-16Z, aby usunąć tę podatność oraz wdrożenie dodatkowych środków bezpieczeństwa, takich jak ograniczenia liczby prób logowania.
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Original NVD description (English source)
MinIO is a high-performance object storage system. Prior to RELEASE.2026-03-17T21-25-16Z, MinIO AIStor's STS (Security Token Service) AssumeRoleWithLDAPIdentity endpoint is vulnerable to LDAP credential brute-forcing due to two combined weaknesses: (1) distinguishable error responses that enable username enumeration, and (2) absence of rate limiting on authentication attempts. An unauthenticated network attacker can enumerate valid LDAP usernames and then perform unlimited password guessing to obtain temporary AWS-style STS credentials, gaining access to the victim's S3 buckets and objects. This issue has been patched in RELEASE.2026-03-17T21-25-16Z.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

