CVE-2020-5726 SQL injection in Grandstream UCM6200 series

High 7.5 Published 30 Mar 2020 Updated 4 Aug 2024

Remote unauthenticated attackers can exploit SQL injection in the CTI server to discover user passwords on Grandstream UCM6200 devices.

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

What is CVE-2020-5726?

CVE-2020-5726 is a high-severity SQL injection vulnerability in Grandstream UCM6200 series, published on 30 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the CTI server on port 8888. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.

Weakness: CWE-89

Which versions are affected by CVE-2020-5726?

It affects 3 products.

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

How do I fix CVE-2020-5726?

No fix has been published for CVE-2020-5726 yet. Limit exposure of the affected software until one is available.

Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.

Is CVE-2020-5726 being exploited?

There is no known exploitation of CVE-2020-5726 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as GHSA-j8g2-wfvh-q3pf.