CVE-2024-21670

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Source

https://cve.org/CVERecord?id=CVE-2024-21670

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-21670.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2024-21670

Aliases

GHSA-r78f-4q2q-hvv4

Published

2024-01-16T21:44:05.572Z

Modified

2026-03-14T12:30:54.297568Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N CVSS Calculator

Summary

CL-Signatures Revocation Scheme in Ursa has flaws that allow a holder to demonstrate non-revocation of a revoked credential

Details

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 A verifier may verify a credential from a holder as being "not revoked" when in fact, the holder's credential has been revoked.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

Database specific

{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21670.json",
    "cwe_ids": [
        "CWE-327"
    ]
}

References

Affected packages

Git / github.com/hyperledger-archives/ursa

Affected ranges

Type

GIT

Repo

https://github.com/hyperledger-archives/ursa

Events

Introduced

Last affected

34ef3926b633a5eaff5b220c40005bbc8cd04861

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.3.7"
        }
    ]
}

Affected versions

bbs-v0.*

bbs-v0.3.0

bbs-v0.4.0

v0.*

v0.1.0

v0.1.1

v0.2.0

v0.3.0

v0.3.1

v0.3.2

v0.3.6

v0.3.7

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-21670.json"