CVE-2023-42431 Potential XSS on user preferences page

Low 2.1 Published 30 Oct 2023 Updated 6 Sep 2024

A logged-in user can inject arbitrary HTML into the profile image dialog, potentially executing scripts in other users' browsers.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-42431?

CVE-2023-42431 is a low-severity cross-site scripting vulnerability in Hallo Welt! GmbH BlueSpice, published on 30 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Cross-site Scripting (XSS) vulnerability in BlueSpiceAvatars extension of BlueSpice allows logged in user to inject arbitrary HTML into the profile image dialog on Special:Preferences. This only applies to the genuine user context.

Weakness: CWE-79, CWE-20

Which versions are affected by CVE-2023-42431?

It affects 1 product.

Products include Hallowelt Bluespice.

How do I fix CVE-2023-42431?

No fix has been published for CVE-2023-42431 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-42431 being exploited?

There is no known exploitation of CVE-2023-42431 in the wild and no public exploit code.

Sources

Also known as GHSA-wh3j-5jfr-mvrv.