CVE-2020-5739 Command injection in Grandstream GXP1600 Series

High 8.8 Published 14 Apr 2020 Updated 4 Aug 2024

Authenticated attackers can execute arbitrary commands with root privileges on Grandstream GXP1600 phones by injecting scripts into VPN settings.

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-2020-5739?

CVE-2020-5739 is a high-severity command injection vulnerability in Grandstream GXP1600 Series, published on 14 Apr 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Grandstream GXP1600 series firmware 1.0.4.152 and below is vulnerable to authenticated remote command execution when an attacker adds an OpenVPN up script to the phone's VPN settings via the "Additional Settings" field in the web interface. When the VPN's connection is established, the user defined script is executed with root privileges.

Weakness: CWE-94

Which versions are affected by CVE-2020-5739?

It affects 6 products.

Products include Grandstream Gxp1610 Firmware, Grandstream Gxp1615 Firmware, Grandstream Gxp1620 Firmware, Grandstream Gxp1625 Firmware, Grandstream Gxp1628 Firmware, Grandstream Gxp1630 Firmware.

How do I fix CVE-2020-5739?

No fix has been published for CVE-2020-5739 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-2020-5739 being exploited?

There is no known exploitation of CVE-2020-5739 in the wild and no public exploit code.

Sources

Also known as GHSA-6p3v-7x9x-66jr.