CVE-2021-39279 Command injection in n/a

High 8.8 Published 7 Sep 2021 Updated 4 Aug 2024

Authenticated attackers can execute arbitrary commands on MOXA industrial network devices via the web import TFTP interface.

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-2021-39279?

CVE-2021-39279 is a high-severity command injection vulnerability in n/a, published on 7 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Certain MOXA devices allow Authenticated Command Injection via /forms/web_importTFTP. This affects WAC-2004 1.7, WAC-1001 2.1, WAC-1001-T 2.1, OnCell G3470A-LTE-EU 1.7, OnCell G3470A-LTE-EU-T 1.7, TAP-323-EU-CT-T 1.3, TAP-323-US-CT-T 1.3, TAP-323-JP-CT-T 1.3, WDR-3124A-EU 2.3, WDR-3124A-EU-T 2.3, WDR-3124A-US 2.3, and WDR-3124A-US-T 2.3.

Weakness: CWE-78

Which versions are affected by CVE-2021-39279?

It affects 12 products.

Products include Moxa Oncell G3470a-Lte-Eu-T Firmware, Moxa Oncell G3470a-Lte-Eu Firmware, Moxa Tap-323-Eu-Ct-T Firmware, Moxa Tap-323-Jp-Ct-T Firmware, Moxa Tap-323-Us-Ct-T Firmware, Moxa Wac-1001-T Firmware and 6 more.

How do I fix CVE-2021-39279?

No fix has been published for CVE-2021-39279 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-2021-39279 being exploited?

There is no known exploitation of CVE-2021-39279 in the wild and no public exploit code.

Sources

Also known as GHSA-h724-3h22-3p4x.