DEBIAN-CVE-2021-40823

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Source

https://security-tracker.debian.org/tracker/DEBIAN-CVE-2021-40823

Import Source

https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-40823.json

JSON Data

https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-40823

Upstream

CVE-2021-40823

Published

2021-09-13T19:15:19Z

Modified

2025-09-18T05:18:23Z

Summary

[none]

Details

A logic error in the room key sharing functionality of matrix-js-sdk (aka Matrix Javascript SDK) before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys (via crafted Matrix protocol messages) that were originally sent by affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-end encrypted messages sent by affected clients.

References

https://security-tracker.debian.org/tracker/CVE-2021-40823

Affected packages

Debian:11 / node-matrix-js-sdk

Package

Name: node-matrix-js-sdk
Purl: pkg:deb/debian/node-matrix-js-sdk?arch=source

Affected ranges

Ecosystem specific

{
    "urgency": "not yet assigned"
}