CVE-2023-37555 CODESYS Improper Input Validation in CmpAppBP

Medium 6.5 Published 3 Aug 2023 Updated 9 Oct 2024

Authenticated attackers can cause denial of service in CODESYS runtime systems by sending crafted network requests that trigger invalid memory reads.

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-2023-37555?

CVE-2023-37555 is a medium-severity denial of service vulnerability in Codesys Control for Beaglebone Sl, published on 3 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In multiple versions of multiple Codesys products, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpAppBP component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37552, CVE-2023-37553, CVE-2023-37554 and CVE-2023-37556.

Weakness: CWE-20

Which versions are affected by CVE-2023-37555?

It affects 16 products.

Products include Codesys Control for Beaglebone Sl, Codesys Control for Empc-A\/Imx6 Sl, Codesys Control for Iot2000 Sl, Codesys Control for Linux Sl, Codesys Control for Pfc100 Sl, Codesys Control for Pfc200 Sl and 10 more.

How do I fix CVE-2023-37555?

No fix has been published for CVE-2023-37555 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-2023-37555 being exploited?

There is no known exploitation of CVE-2023-37555 in the wild and no public exploit code.

All Codesys Control for Beaglebone Sl vulnerabilities

Sources

Also known as GHSA-4269-36rj-fxq8.