CVE-2024-42347 URL preview setting for a room is controllable by the homeserver in matrix-react-sdk

2024-08-0617:16:14

CWE-359

GitHub_M

www.cve.org

vulnerability

matrix-react-sdk

homeserver control

url preview

encrypted rooms

patched

upgrade

CVSS3

7.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS

0.001

Percentile

18.8%

JSON

matrix-react-sdk is a react-based SDK for inserting a Matrix chat/voip client into a web page. A malicious homeserver could manipulate a user’s account data to cause the client to enable URL previews in end-to-end encrypted rooms, in which case any URLs in encrypted messages would be sent to the server. This was patched in matrix-react-sdk 3.105.0. Deployments that trust their homeservers, as well as closed federations of trusted servers, are not affected. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CNA Affected

[
  {
    "vendor": "matrix-org",
    "product": "matrix-react-sdk",
    "versions": [
      {
        "version": "< 3.105.1",
        "status": "affected"
      }
    ]
  }
]