CVE-2022-39252

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    CVE-2022-39252

    Published: 29 Sept 2022Last Modified: 12 Aug 2026

    Summary: When matrix-rust-sdk recieves forwarded room keys, the reciever doesn't check if it requested the key from the forwarder

    Details: 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.

    References: https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-0.6.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39252.json, https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-vp68-2wrm-69qm, https://nvd.nist.gov/vuln/detail/CVE-2022-39252, https://github.com/matrix-org/matrix-rust-sdk/commit/093fb5d0aa21c0b5eaea6ec96b477f1075271cbb, https://github.com/matrix-org/matrix-rust-sdk/commit/41449d2cc360e347f5d4e1c154ec1e3185f11acd

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -fefd2a6b6851e4e3479a267a92241079b53931a0

    Affected versions

    matrix-sdk-crypto-ffi-0.1.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-39252 | CVE-DB