Description (CNA)
Ursa is a cryptographic library for use with blockchains. The revocation scheme that is part of the Ursa CL-Signatures implementations has a flaw that could impact the privacy guarantees defined by the AnonCreds verifiable credential model. Notably, a malicious verifier may be able to generate a unique identifier for a holder providing a verifiable presentation that includes a Non-Revocation proof. The impact of the flaw is that a malicious verifier may be able to determine a unique identifier for a holder presenting a Non-Revocation proof. Ursa has moved to end-of-life status and no fix is expected.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| hyperledger-archives / ursa | affected <= 0.3.7 |
CWE
CWE-327
References
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.