GHSA-vp68-2wrm-69qm

Source

https://github.com/advisories/GHSA-vp68-2wrm-69qm

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-vp68-2wrm-69qm/GHSA-vp68-2wrm-69qm.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-vp68-2wrm-69qm

Aliases

Published

2022-09-30T22:51:57Z

Modified

2023-11-08T04:10:16.760388Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator

Summary

matrix-sdk-crypto contains potential impersonation via room key forward responses

Details

Impact

When matrix-rust-sdk before 0.6 requests a room key from our devices, it correctly accepts key forwards only if they are a response to a previous request. However, it doesn't check that the device that responded matches the device the key was requested from.

This allows a malicious homeserver to insert room keys of questionable validity into the key store in some situations, potentially assisting in an impersonation attack. Note that even if key injection succeeds in this way, all forwarded keys have the imported flag set, which is used as an indicator that such keys have lesser authentication properties (and should be marked as such in clients, e.g. with a grey shield besides the message).

For more information

If you have any questions or comments about this advisory, e-mail us at security@matrix.org.

Database specific

{
    "nvd_published_at": "2022-09-29T15:15:00Z",
    "github_reviewed_at": "2022-09-30T22:51:57Z",
    "severity": "MODERATE",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-287"
    ]
}

References

Affected packages

crates.io / matrix-sdk-crypto

Package

Name: matrix-sdk-crypto; View open source insights on deps.dev
Purl: pkg:cargo/matrix-sdk-crypto

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.6.0