CVE-2022-39252 (GCVE-0-2022-39252)

Vulnerability from cvelistv5 – Published: 2022-09-29 14:15 – Updated: 2025-04-23 16:54
VLAI?
Title
When matrix-rust-sdk recieves forwarded room keys, the reciever doesn't check if it requested the key from the forwarder
Summary
matrix-rust-sdk is an implementation of a Matrix client-server library in Rust, and matrix-sdk-crypto is the Matrix encryption library. Prior to version 0.6, when a user requests a room key from their devices, the software correctly remembers the request. When the user receives a forwarded room key, the software accepts it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack. Version 0.6 fixes this issue.
Severity ?
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
CWE
  • CWE-322 - Key Exchange without Entity Authentication
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
matrix-org matrix-rust-sdk Affected: < 0.6
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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