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
Link | Resource |
---|---|
https://github.com/matrix-org/matrix-js-sdk/releases/tag/v12.4.1 | Third Party Advisory |
https://matrix.org/blog/2021/09/13/vulnerability-disclosure-key-sharing | Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-09-13T18:45:50
Updated: 2021-09-14T11:50:31
Reserved: 2021-09-09T00:00:00
Link: CVE-2021-40823
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-09-13T19:15:19.137
Modified: 2023-08-08T14:22:24.967
Link: CVE-2021-40823
JSON object: View
Redhat Information
No data.
CWE