CVE-2021-33534 WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability

High 7.2 Published 25 Jun 2021 Updated 17 Sep 2024

Authenticated high-privilege users can execute arbitrary system commands via hostname input, gaining full control of Weidmüller Industrial WLAN devices.

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

What is CVE-2021-33534?

CVE-2021-33534 is a high-severity command injection vulnerability in Weidmüller IE-WL(T)-BL-AP-CL-XX, published on 25 Jun 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

In Weidmueller Industrial WLAN devices in multiple versions an exploitable command injection vulnerability exists in the hostname functionality. A specially crafted entry to network configuration information can cause execution of arbitrary system commands, resulting in full control of the device. An attacker can send various requests while authenticated as a high privilege user to trigger this vulnerability.

Weakness: CWE-78

Which versions are affected by CVE-2021-33534?

It affects 8 products.

Products include Weidmueller Ie-Wl-Bl-Ap-Cl-Eu Firmware, Weidmueller Ie-Wl-Bl-Ap-Cl-Us Firmware, Weidmueller Ie-Wl-Vl-Ap-Br-Cl-Eu Firmware, Weidmueller Ie-Wl-Vl-Ap-Br-Cl-Us Firmware, Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu Firmware, Weidmueller Ie-Wlt-Bl-Ap-Cl-Us Firmware and 2 more.

How do I fix CVE-2021-33534?

No fix has been published for CVE-2021-33534 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-2021-33534 being exploited?

There is no known exploitation of CVE-2021-33534 in the wild and no public exploit code.

Sources

Also known as GHSA-vjcc-r8cc-jqj4.