CVE-2024-22192

Summary

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 Software

Weaknesses

• CWE-327: CWE-327: Use of a Broken or Risky Cryptographic Algorithm

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/hyperledger-archives/ursa/security/advisories/GHSA-6698-mhxx-r84g

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/hyperledger-archives/ursa/security/advisories/GHSA-6698-mhxx-r84g

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