Vulnerability Details CVE-2022-39252
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 21.0%
CVSS Severity
CVSS v3 Score 8.6
References
- https://github.com/matrix-org/matrix-rust-sdk/commit/093fb5d0aa21c0b5eaea6ec96b477f1075271cbb
- https://github.com/matrix-org/matrix-rust-sdk/commit/41449d2cc360e347f5d4e1c154ec1e3185f11acd
- https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-0.6.0
- https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-vp68-2wrm-69qm
- https://github.com/matrix-org/matrix-rust-sdk/commit/093fb5d0aa21c0b5eaea6ec96b477f1075271cbb
- https://github.com/matrix-org/matrix-rust-sdk/commit/41449d2cc360e347f5d4e1c154ec1e3185f11acd
- https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-0.6.0
- https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-vp68-2wrm-69qm
Products affected by CVE-2022-39252
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cpe:2.3:a:matrix:matrix-rust-sdk:0.4.0
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cpe:2.3:a:matrix:matrix-rust-sdk:0.4.1
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cpe:2.3:a:matrix:matrix-rust-sdk:0.5.0