Vulnerability Information
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Vulnerability Title
CL-Signatures Revocation Scheme in Ursa has flaws that allow a holder to demonstrate non-revocation of a revoked credential
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 A verifier may verify a credential from a holder as being "not revoked" when in fact, the holder's credential has been revoked.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.
CVSS Information
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
Vulnerability Type
使用已被攻破或存在风险的密码学算法
Vulnerability Title
Hyperledger Ursa 加密问题漏洞
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。
CVSS Information
N/A
Vulnerability Type
N/A