CVE-2026-40070
HighSummary
SDK Ruby BSV dla blockchaina BSV w wersjach od 0.3.1 do przed 0.8.2 nie weryfikuje podpisu certyfikatora przy zapisywaniu rekordów certyfikatów. W przypadku protokołu akwizycji 'bezpośredniego' oraz 'wydania', dane są zapisywane bez weryfikacji, co pozwala na fałszowanie certyfikatów tożsamości.
Risk Assessment
Atakujący mający dostęp do API lub kontrolujący punkt certyfikatora może tworzyć fałszywe certyfikaty, które będą wyglądały na autentyczne, co może prowadzić do poważnych naruszeń bezpieczeństwa tożsamości w systemie.
Recommendation
Zaleca się aktualizację SDK Ruby BSV do wersji 0.8.2 lub nowszej oraz wdrożenie dodatkowych mechanizmów weryfikacji podpisów certyfikatów przed ich zapisaniem.
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Original NVD description (English source)
BSV Ruby SDK is the Ruby SDK for the BSV blockchain. From 0.3.1 to before 0.8.2, BSV::Wallet::WalletClient#acquire_certificate persists certificate records to storage without verifying the certifier's signature over the certificate contents. In acquisition_protocol: 'direct', the caller supplies all certificate fields (including signature:) and the record is written to storage verbatim. In acquisition_protocol: 'issuance', the client POSTs to a certifier URL and writes whatever signature the response body contains, also without verification. An attacker who can reach either API (or who controls a certifier endpoint targeted by the issuance path) can forge identity certificates that subsequently appear authentic to list_certificates and prove_certificate.

