CVE-2020-3920 Unisoon UltraLog Express - Broken Authentication

High 8.1 Published 27 Mar 2020 Updated 17 Sep 2024

Attackers can access privileged account management pages without authentication, leading to unauthorized control of the device.

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-2020-3920?

CVE-2020-3920 is a high-severity missing authorization vulnerability in Unisoon UltraLog Express, published on 27 Mar 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

UltraLog Express device management interface does not properly perform access authentication in some specific pages/functions. Any user can access the privileged page to manage accounts through specific system directory.

Weakness: CWE-306

Which versions are affected by CVE-2020-3920?

It affects 1 product.

Products include Unisoon Ultralog Express Firmware.

How do I fix CVE-2020-3920?

No fix has been published for CVE-2020-3920 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-3920 being exploited?

There is no known exploitation of CVE-2020-3920 in the wild and no public exploit code.

Sources

Also known as GHSA-3c6v-c67v-hx4q.