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CVE-2024-41949— biscuit-rust vulnerable to public key confusion in third party block

Quick assessment

Affected
biscuit-auth biscuit-rust
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.

biscuit-rust是biscuit-auth开源的一个 Biscuit 授权令牌的 Rust 实现。 biscuit-rust 4版本存在安全漏洞，该漏洞源于恶意用户伪造的第三方块请求可以诱使第三方机构生成信任错误密钥对的数据日志。

CVSS 3.0 · Low EPSS 0.24% · P13
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I. Basic Information for CVE-2024-41949

Vulnerability Information
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Vulnerability Title
biscuit-rust vulnerable to public key confusion in third party block
Source: CVE Program / CVE List V5
Vulnerability Description
biscuit-rust is the Rust implementation of Biscuit, an authentication and authorization token for microservices architectures. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it, which includes the public key of the previous block (used in the signature) and the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
biscuit-rust 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
biscuit-rust是biscuit-auth开源的一个 Biscuit 授权令牌的 Rust 实现。 biscuit-rust 4版本存在安全漏洞，该漏洞源于恶意用户伪造的第三方块请求可以诱使第三方机构生成信任错误密钥对的数据日志。
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
biscuit-auth biscuit-rust < 5.0.0 -

II. Public POCs for CVE-2024-41949

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III. Intelligence Information for CVE-2024-41949

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Vendor Advisories for CVE-2024-41949 (1)

IV. Related Vulnerabilities

Same vendor: biscuit-auth
Same weakness: CWE-269

V. Comments for CVE-2024-41949

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