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.
| Software | From | Fixed in |
|---|---|---|
matrix-sdk-crypto
|
- | 0.7.2 |
- https://github.com/matrix-org/matrix-rust-sdk/commit/76a7052149bb8f722df12da915b3a06d19a6695a
- https://github.com/matrix-org/matrix-rust-sdk/releases/tag/0.7.2-crypto
- https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-4qg4-cvh2-crgg
- https://rustsec.org/advisories/RUSTSEC-2024-0356.html
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