Skip to content

Matrix SDK for React's URL preview setting for a room is controllable by the homeserver

Moderate severity GitHub Reviewed Published Aug 6, 2024 in matrix-org/matrix-react-sdk • Updated Aug 8, 2024

Package

npm matrix-react-sdk (npm)

Affected versions

< 3.105.1

Patched versions

3.105.1

Description

Impact

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.

Even if the CVSS score would be 4.1 (AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N) the maintainer classifies this as High severity issue.

Patches

This was patched in matrix-react-sdk 3.105.1.

Workarounds

Deployments that trust their homeservers, as well as closed federations of trusted servers, are not affected.

References

N/A.

References

@davidegirardi davidegirardi published to matrix-org/matrix-react-sdk Aug 6, 2024
Published to the GitHub Advisory Database Aug 6, 2024
Reviewed Aug 6, 2024
Published by the National Vulnerability Database Aug 6, 2024
Last updated Aug 8, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

EPSS score

0.049%
(19th percentile)

Weaknesses

CVE ID

CVE-2024-42347

GHSA ID

GHSA-f83w-wqhc-cfp4

Source code

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.