CVE-2024-21670

HIGH EPSS 19.4%
Published Jan 16, 20242y ago · Modified Jun 17, 20262w ago
8.1 CVSS 3.1
High
Find Similar
Published Jan 16, 2024 2y ago
Last Modified Jun 17, 2026 2w ago

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 A verifier may verify a credential from a holder as being "not revoked" when in fact, the holder's credential has been revoked.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.

CVSS Details

Base Score
8.1
Exploitability
2.2
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
19.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-327

Affected Products 1

VendorProductVersionRange
hyperledgerursa0.1.0any

References 1

  • github.com https://github.com/hyperledger-archives/ursa/security/advisories/GHSA-r78f-4q2q-hvv4
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.