CVE-2023-1620 WAGO: DoS in multiple products in multiple versions using Codesys

Medium 4.9 Published 26 Jun 2023 Updated 12 Nov 2024

Authenticated high-privilege attackers can cause denial of service on WAGO devices by sending crafted packets to the CODESYS runtime.

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-2023-1620?

CVE-2023-1620 is a medium-severity denial of service vulnerability in Wago 750-331, published on 26 Jun 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Multiple WAGO devices in multiple versions may allow an authenticated remote attacker with high privileges to DoS the device by sending a specifically crafted packet to the CODESYS V2 runtime.

Weakness: CWE-1288

Which versions are affected by CVE-2023-1620?

It affects 76 products.

Products include Wago 750-331 Firmware, Wago 750-8202\/000-011 Firmware, Wago 750-8202\/000-012 Firmware, Wago 750-8202\/000-022 Firmware, Wago 750-8202\/025-000 Firmware, Wago 750-8202\/025-001 Firmware and 70 more.

How do I fix CVE-2023-1620?

No fix has been published for CVE-2023-1620 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-1620 being exploited?

There is no known exploitation of CVE-2023-1620 in the wild and no public exploit code.

Sources

Also known as GHSA-vhfw-j3c3-cmgg.