CVE-2021-40823

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:matrix:javascript_sdk:*:*:*:*:*:*:*:*

Information

Published : 2021-09-13 12:15

Updated : 2021-09-24 10:27


NVD link : CVE-2021-40823

Mitre link : CVE-2021-40823


JSON object : View

CWE
CWE-327

Use of a Broken or Risky Cryptographic Algorithm

Products Affected

matrix

  • javascript_sdk