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Vulnerability CVE-2024-21670
Published: 2024-01-16
| Description: |
Ursa is a cryptographic library for use with blockchains. The revocation schema 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, allowing a malicious holder of a revoked credential to generate a valid Non-Revocation Proof for that credential as part of an AnonCreds presentation. A verifier may verify a credential from a holder as being "not revoked" when in fact, the holder's credential has been revoked. Ursa has moved to end-of-life status and no fix is expected. |
Type:
CWE-327 (Use of a Broken or Risky Cryptographic Algorithm)
References: |
https://github.com/hyperledger-archives/ursa/security/advisories/GHSA-r78f-4q2q-hvv4
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