Identity Verification Vulnerability in matrix-rust-sdk Could Lead to Manipulation of Sensitive Operations
CVE-2024-40648

5.4MEDIUM

Key Information:

Vendor

Matrix-org

Status
Matrix-rust-sdk
Vendor
CVE Published:
18 July 2024

What is CVE-2024-40648?

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.

Affected Version(s)

matrix-rust-sdk < 0.7.2

References

https://github.com/matrix-org/matrix-rust-sdk/security/ad...
x_refsource_CONFIRM
https://github.com/matrix-org/matrix-rust-sdk/commit/76a7...
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.