What is CVE-2022-31804?

CVE-2022-31804 is a vulnerability in the CODESYS Gateway Server V2 that allows an unauthenticated attacker to allocate an arbitrary amount of memory, potentially causing a crash due to an out-of-memory condition.

How does CVE-2022-31804 affect CODESYS Gateway Server?

CVE-2022-31804 affects CODESYS Gateway Server V2 versions 2.0 to 2.3.9.38 by not verifying the size of a request, allowing an attacker to allocate excessive memory and potentially crash the Gateway.

What is the severity of CVE-2022-31804?

The severity of CVE-2022-31804 is high with a CVSS score of 7.5.

How can I fix CVE-2022-31804?

To fix CVE-2022-31804, it is recommended to update the CODESYS Gateway Server V2 to a version that includes the fix for the vulnerability.

Where can I find more information about CVE-2022-31804?

More information about CVE-2022-31804 can be found at the following link: [https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17141&token=17867e35cfd30c77ba0137f9a17b3a557a4b7b66&download=](https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17141&token=17867e35cfd30c77ba0137f9a17b3a557a4b7b66&download=

Vulnerability/
CVE-2022-31804

high

7.5

CWE

789

9/6/2022

3/8/2024

CVE-2022-31804: CODESYS Gateway server prone to denial of service attack due to excessive memory allocation

First published: Thu Jun 09 2022(Updated: )

The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected limits. An unauthenticated attacker may allocate an arbitrary amount of memory, which may lead to a crash of the Gateway due to an out-of-memory condition.

Credit: info@cert.vde.com

Affected Software	Affected Version	How to fix
CODESYS Gateway	>=2.0<2.3.9.38

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Reference Links

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17141&token=17867e35cfd30c77ba0137f9a17b3a557a4b7b66&download=

Frequently Asked Questions

What is CVE-2022-31804?
CVE-2022-31804 is a vulnerability in the CODESYS Gateway Server V2 that allows an unauthenticated attacker to allocate an arbitrary amount of memory, potentially causing a crash due to an out-of-memory condition.
How does CVE-2022-31804 affect CODESYS Gateway Server?
CVE-2022-31804 affects CODESYS Gateway Server V2 versions 2.0 to 2.3.9.38 by not verifying the size of a request, allowing an attacker to allocate excessive memory and potentially crash the Gateway.
What is the severity of CVE-2022-31804?
The severity of CVE-2022-31804 is high with a CVSS score of 7.5.
How can I fix CVE-2022-31804?
To fix CVE-2022-31804, it is recommended to update the CODESYS Gateway Server V2 to a version that includes the fix for the vulnerability.
Where can I find more information about CVE-2022-31804?
More information about CVE-2022-31804 can be found at the following link: [https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17141&token=17867e35cfd30c77ba0137f9a17b3a557a4b7b66&download=](https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17141&token=17867e35cfd30c77ba0137f9a17b3a557a4b7b66&download=

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