CVE-2022-39252

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Summary

CVECVE-2022-39252
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-09-29 15:15:00 UTC
Updated2022-10-03 19:30:00 UTC
Descriptionmatrix-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.

Risk And Classification

Problem Types: CWE-287 | CWE-322

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Matrix Matrix-rust-sdk All All All All

References

ReferenceSourceLinkTags
When receiving forwarded room keys, we don't check that the forwarder device matches the device we requested from · Advisory · matrix-org/matrix-rust-sdk · GitHub CONFIRM github.com
Release 2022-09-28 - Matrix SDK 0.6.0 · matrix-org/matrix-rust-sdk · GitHub MISC github.com
test(crypto): Test that we reject forwarded room keys from other users · matrix-org/matrix-rust-sdk@41449d2 · GitHub MISC github.com
fix(crypto): Only accept forwarded room keys from our own trusted dev… · matrix-org/matrix-rust-sdk@093fb5d · GitHub MISC github.com
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