CVE-2022-31803 CODESYS Gateway Server V2 prone to Denial of Service Attack
An unauthenticated attacker can exhaust TCP connections in CODESYS Gateway Server V2, preventing legitimate clients from connecting.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-31803?
CVE-2022-31803 is a medium-severity denial of service vulnerability in CODESYS Gateway Server V2, published on 24 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In CODESYS Gateway Server V2 an insufficient check for the activity of TCP client connections allows an unauthenticated attacker to consume all available TCP connections and prevent legitimate users or clients from establishing a new connection to the CODESYS Gateway Server V2. Existing connections are not affected and therefore remain intact.
Weakness: CWE-400
Which versions are affected by CVE-2022-31803?
It affects 1 product.
Products include Codesys Gateway.
How do I fix CVE-2022-31803?
No fix has been published for CVE-2022-31803 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-2022-31803 being exploited?
There is no known exploitation of CVE-2022-31803 in the wild and no public exploit code.
Other vulnerabilities in CODESYS Gateway Server V2
Sources
Also known as GHSA-9348-vpwc-ch78.