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CVE-2024-40648— `UserIdentity::is_verified` not checking verification status of own user identity while performing the check in matrix-rust-sdk

Quick assessment

Affected
matrix-org matrix-rust-sdk
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.

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。

CVSS 5.4 · Medium EPSS 0.28% · P18

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts
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I. Basic Information for CVE-2024-40648

Vulnerability Information
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Vulnerability Title
`UserIdentity::is_verified` not checking verification status of own user identity while performing the check in matrix-rust-sdk
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
matrix-rust-sdk 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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。
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
matrix-org matrix-rust-sdk < 0.7.2 -

II. Public POCs for CVE-2024-40648

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III. Intelligence Information for CVE-2024-40648

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Patches & Fixes for CVE-2024-40648 (1)

IV. Related Vulnerabilities

Same product: matrix-rust-sdk
Same vendor: matrix-org
Same weakness: CWE-287

V. Comments for CVE-2024-40648

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