`UserIdentity::is_verified` not checking verification status of own user identity while performing the check in matrix-rust-sdk

matrix-rust-sdk is an implementation of a Matrix client-server library in Rust. The `UserIdentity::is_verified()` method in the matrix-sdk-crypto crate before version 0.7.2 doesn't take into account the verification status of the user's own identity while performing the check and may as a result return a value contrary to what is implied by its name and documentation. If the method is used to decide whether to perform sensitive operations towards a user identity, a malicious homeserver could manipulate the outcome in order to make the identity appear trusted. This is not a typical usage of the method, which lowers the impact. The method itself is not used inside the `matrix-sdk-crypto` crate. The 0.7.2 release of the `matrix-sdk-crypto` crate includes a fix. All users are advised to upgrade. There are no known workarounds for this vulnerability.

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

认证机制不恰当

matrix-rust-sdk 安全漏洞

matrix-rust-sdk是matrix开源的一个 Rust 中 Matrix 客户端-服务器库的实现。 matrix-rust-sdk 0.7.2之前版本存在安全漏洞，该漏洞源于在执行检查时不检查自己用户身份的验证状态。

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