CVE-2024-42347

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

Description

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.

Category

7.7
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.17%
Vendor Advisory github.com
Affected: matrix-org matrix-react-sdk
Published at:
Updated at:

References

Link Tags
https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-f83w-wqhc-cfp4 vendor advisory
https://github.com/matrix-org/matrix-react-sdk/releases/tag/v3.105.1 release notes

Frequently Asked Questions

What is the severity of CVE-2024-42347?
CVE-2024-42347 has been scored as a high severity vulnerability.
How to fix CVE-2024-42347?
To fix CVE-2024-42347, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-42347 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-42347 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-42347?
CVE-2024-42347 affects matrix-org matrix-react-sdk.
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