biscuit-rust vulnerable to public key confusion in third party block

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.

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N

特权管理不恰当

biscuit-rust 安全漏洞

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。

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