CVE-2024-40648

Summary

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 Software

VendorProductVersion RangeStatus
matrix-orgmatrix-rust-sdk< 0.7.2affected

Weaknesses

  • CWE-287: CWE-287: Improper Authentication

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References