CVE-2024-40648
matrix-sdk-crypto's `UserIdentity::is_verified` not checking verification status of own user identity while performing the check
Impact
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. ### Impact 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. ### Patches The 0.7.2 release of the `matrix-sdk-crypto` crate includes a fix. ### Workarounds None.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rust | matrix-sdk-crypto | < 0.7.2 | 0.7.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/matrix-org/matrix-rust-sdk/commit/76a7052149bb8f722df12da915b3a06d19a6695a
- https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-4qg4-cvh2-crgg
- https://github.com/advisories/GHSA-4qg4-cvh2-crgg
- https://github.com/matrix-org/matrix-rust-sdk/releases/tag/0.7.2-crypto
- https://nvd.nist.gov/vuln/detail/CVE-2024-40648
- https://rustsec.org/advisories/RUSTSEC-2024-0356.html