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4 vulnerabilities by hyperledger-archives
CVE-2024-22192 (GCVE-0-2024-22192)
Vulnerability from cvelistv5 – Published: 2024-01-16 21:44 – Updated: 2025-06-16 19:46
VLAI
Title
Ursa CL-Signatures Revocation allows verifiers to generate unique identifiers for holders
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.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/hyperledger-archives/ursa/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| hyperledger-archives | ursa |
Affected:
<= 0.3.7
|
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CVE-2024-21670 (GCVE-0-2024-21670)
Vulnerability from cvelistv5 – Published: 2024-01-16 21:44 – Updated: 2024-08-01 22:27
VLAI
Title
CL-Signatures Revocation Scheme in Ursa has flaws that allow a holder to demonstrate non-revocation of a revoked credential
Summary
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 A verifier may verify a credential from a holder as being "not revoked" when in fact, the holder's credential has been revoked.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.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/hyperledger-archives/ursa/secu… | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| hyperledger-archives | ursa |
Affected:
<= 0.3.7
|
|
| hyperledger | ursa |
Affected:
0 , ≤ 0.3.7
(custom)
cpe:2.3:a:hyperledger:ursa:*:*:*:*:*:*:*:* |
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CVE-2024-22192 (GCVE-0-2024-22192)
Vulnerability from nvd – Published: 2024-01-16 21:44 – Updated: 2025-06-16 19:46
VLAI
Title
Ursa CL-Signatures Revocation allows verifiers to generate unique identifiers for holders
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.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/hyperledger-archives/ursa/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| hyperledger-archives | ursa |
Affected:
<= 0.3.7
|
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CVE-2024-21670 (GCVE-0-2024-21670)
Vulnerability from nvd – Published: 2024-01-16 21:44 – Updated: 2024-08-01 22:27
VLAI
Title
CL-Signatures Revocation Scheme in Ursa has flaws that allow a holder to demonstrate non-revocation of a revoked credential
Summary
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.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/hyperledger-archives/ursa/secu… | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| hyperledger-archives | ursa |
Affected:
<= 0.3.7
|
|
| hyperledger | ursa |
Affected:
0 , ≤ 0.3.7
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