hyperledger-archives ursa up to 0.3.7 Revocation Schema risky encryption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in hyperledger-archives ursa up to 0.3.7. This issue affects some unknown functionality of the component Revocation Schema. The manipulation with an unknown input leads to a risky encryption vulnerability. Using CWE to declare the problem leads to CWE-327. The product uses a broken or risky cryptographic algorithm or protocol. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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 A verifier may verify a credential from a holder as being "not revoked" when in fact, the holder's credential has been revoked.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

The weakness was released 01/17/2024 as GHSA-r78f-4q2q-hvv4. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2024-21670 since 12/29/2023. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

Support

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 6.0

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Risky encryption
CWE: CWE-327 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/29/2023 🔍
01/17/2024 +19 days 🔍
01/17/2024 +0 days 🔍
02/06/2024 +20 days 🔍

Sourcesinfo

Advisory: GHSA-r78f-4q2q-hvv4
Status: Confirmed

CVE: CVE-2024-21670 (🔍)
GCVE (CVE): GCVE-0-2024-21670
GCVE (VulDB): GCVE-100-250931

Entryinfo

Created: 01/17/2024 07:16 AM
Updated: 02/06/2024 06:08 PM
Changes: 01/17/2024 07:16 AM (50), 02/06/2024 06:08 PM (11)
Complete: 🔍
Cache ID: 18:74F:40

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