CVE-2020-5758 Command injection in Grandstream UCM6200 Series

High 8.8 Published 17 Jul 2020 Updated 4 Aug 2024

An authenticated remote attacker can execute arbitrary commands as root on Grandstream UCM6200 devices via a crafted HTTP request.

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-2020-5758?

CVE-2020-5758 is a high-severity command injection vulnerability in Grandstream UCM6200 Series, published on 17 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via HTTP. An authenticated remote attacker can execute commands as the root user by sending a crafted HTTP GET to the UCM's "Old" HTTPS API.

Weakness: CWE-78

Which versions are affected by CVE-2020-5758?

It affects 3 products.

Products include Grandstream Ucm6202 Firmware, Grandstream Ucm6204 Firmware, Grandstream Ucm6208 Firmware.

How do I fix CVE-2020-5758?

No fix has been published for CVE-2020-5758 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2020-5758 being exploited?

There is no known exploitation of CVE-2020-5758 in the wild and no public exploit code.

Sources

Also known as GHSA-fc8w-q5c3-5m5f.