CVE-2021-21872 Command injection in Lantronix

Critical 9.9 Published 22 Dec 2021 Updated 3 Aug 2024

An authenticated attacker can execute arbitrary OS commands via the Traceroute functionality in Lantronix PremierWave devices.

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-2021-21872?

CVE-2021-21872 is a critical command injection vulnerability in Lantronix, published on 22 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An OS command injection vulnerability exists in the Web Manager Diagnostics: Traceroute functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted HTTP request can lead to arbitrary command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Weakness: CWE-78

Which versions are affected by CVE-2021-21872?

It affects 1 product.

Products include Lantronix Premierwave 2050 Firmware.

How do I fix CVE-2021-21872?

No fix has been published for CVE-2021-21872 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-2021-21872 being exploited?

There is no known exploitation of CVE-2021-21872 in the wild and no public exploit code.

Sources

Also known as GHSA-v378-ppcw-9mxm.