CVE-2023-33239 Second Order Command-injection Vulnerability in the Key-generation Function

High 8.8 Published Updated

Attackers can execute remote code on Moxa industrial routers via command injection in the key-generation function due to insufficient input validation.

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-2023-33239?

CVE-2023-33239 is a high-severity command injection vulnerability in Moxa EDR-810 Series, published on 17 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

TN-4900 Series firmware versions v1.2.4 and prior and TN-5900 Series firmware versions v3.3 and prior are vulnerable to the command injection vulnerability. This vulnerability stems from insufficient input validation in the key-generation function, which could potentially allow malicious users to execute remote code on affected devices.

Weakness: CWE-77, CWE-78

Which versions are affected by CVE-2023-33239?

It affects 2 products.

Products include Moxa Tn-4900 Firmware, Moxa Tn-5900 Firmware.

How do I fix CVE-2023-33239?

No fix has been published for CVE-2023-33239 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-2023-33239 being exploited?

There is no known exploitation of CVE-2023-33239 in the wild and no public exploit code.

Sources

Also known as GHSA-4m3x-2qcv-fh8q.

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