CVE-2019-6839 File upload in U.motion Servers (MEG6501-0001 - U.motion KNX server, MEG6501-0002 - U.motion KNX Server Plus, MEG6260-0410 - U.motion KNX Server Plus, Touch 10, and MEG6260-0415 - U.motion KNX Server Plus, Touch 1)

High 8.8 Published 17 Sep 2019 Updated 4 Aug 2024

Low-privilege users can upload malicious files to Schneider U.motion KNX servers, potentially leading to code execution.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-6839?

CVE-2019-6839 is a high-severity vulnerability in U.motion Servers (MEG6501-0001 - U.motion KNX server, MEG6501-0002 - U.motion KNX Server Plus, MEG6260-0410 - U.motion KNX Server Plus, Touch 10, and MEG6260-0415 - U.motion KNX Server Plus, Touch 1), published on 17 Sep 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A CWE-434: Unrestricted Upload of File with Dangerous Type vulnerability exists in U.motion Server (MEG6501-0001 - U.motion KNX server, MEG6501-0002 - U.motion KNX Server Plus, MEG6260-0410 - U.motion KNX Server Plus, Touch 10, MEG6260-0415 - U.motion KNX Server Plus, Touch 15), which could allow a user with low privileges to upload a rogue file.

Weakness: CWE-434

Which versions are affected by CVE-2019-6839?

It affects 4 products.

Products include Schneider-Electric Meg6260-0410 Firmware, Schneider-Electric Meg6260-0415 Firmware, Schneider-Electric Meg6501-0001 Firmware, Schneider-Electric Meg6501-0002 Firmware.

How do I fix CVE-2019-6839?

No fix has been published for CVE-2019-6839 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-6839 being exploited?

There is no known exploitation of CVE-2019-6839 in the wild and no public exploit code.

Sources

Also known as GHSA-f2vv-v8xv-qgm8.