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CVE-2024-22192

Ursa CL-Signatures Revocation allows verifiers to generate unique identifiers for holders

Published: Jan 16, 2024Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-327
6.5MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 75.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-327

Affected Products

crates.io
package-ecosystem
ursa
OSS Libraries
anoncreds-clsignatures
OSS Libraries
hyperledger
oss-project
ursaMixed
OSS Libraries / generic-library
hyperledger-archives
oss-project
ursa
Security Products / pki-crypto

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
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References

https://github.com/hyperledger-archives/ursa/security/advisories/GHSA-6698-mhxx-r84g
github.com
https://nvd.nist.gov/vuln/detail/CVE-2024-22192
nvd.nist.gov
https://github.com/hyperledger/anoncreds-clsignatures-rs/commit/1e55780c890b027fa51e361e188a7743a0bf473f
github.com
and 1 more references View all →

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