Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2024-21670— CL-Signatures Revocation Scheme in Ursa has flaws that allow a holder to demonstrate non-revocation of a revoked credential

Quick assessment

Affected
hyperledger-archives ursa
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hyperledger Ursa是Hyperledger开源的一个与区块链一起使用的密码库。 Hyperledger Ursa 0.1.0版本存在加密问题漏洞，该漏洞源于允许已吊销凭据的恶意持有者在AnonCreds演示中为该凭据生成有效的非吊销证明。

CVSS 6.5 · Medium EPSS 0.28% · P18

Possible ATT&CK Techniques 1 AI

T1565.001 · Stored Data Manipulation
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-21670

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
CL-Signatures Revocation Scheme in Ursa has flaws that allow a holder to demonstrate non-revocation of a revoked credential
Source: CVE Program / CVE List V5
Vulnerability 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 A verifier may verify a credential from a holder as being "not revoked" when in fact, the holder's credential has been revoked.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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用已被攻破或存在风险的密码学算法
Source: CVE Program / CVE List V5
Vulnerability Title
Hyperledger Ursa 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hyperledger Ursa是Hyperledger开源的一个与区块链一起使用的密码库。 Hyperledger Ursa 0.1.0版本存在加密问题漏洞，该漏洞源于允许已吊销凭据的恶意持有者在AnonCreds演示中为该凭据生成有效的非吊销证明。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
hyperledger-archives ursa <= 0.3.7 -

II. Public POCs for CVE-2024-21670

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2024-21670

请登录查看更多情报信息。

Vendor Advisories for CVE-2024-21670 (1)

IV. Related Vulnerabilities

Same product: ursa
Same vendor: hyperledger-archives
Same weakness: CWE-327

V. Comments for CVE-2024-21670

No comments yet

Leave a comment