CVE-2024-42347: matrix-react-sdk — Fix

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.

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CVSS v3.1 Score

7.7

HIGH

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

Weakness Type (CWE)

CWE-359 CWE-359

Affected Products

Vendor	Product	Versions
matrix	matrix-react-sdk	< 3.105.1

References

Advisories & Patches

https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-f83w-wqhc-cfp4

Other References

https://github.com/matrix-org/matrix-react-sdk/releases/tag/v3.105.1

Frequently Asked Questions

What is CVE-2024-42347? +

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. It has a CVSS v3.1 base score of 7.7 (HIGH).

How severe is CVE-2024-42347? +

CVE-2024-42347 has a CVSS v3.1 score of 7.7 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-42347? +

CVE-2024-42347 affects products from matrix, specifically: matrix-react-sdk. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-42347? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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