CVE-2022-25622 Denial of service in SIMATIC CFU DIQ
An attacker can cause a denial of service on Siemens SIMATIC devices by sending specially crafted TCP segments to the PROFINET stack.
- 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-2022-25622?
CVE-2022-25622 is a medium-severity denial of service vulnerability in Siemens SIMATIC CFU DIQ, published on 12 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The PROFINET (PNIO) stack, when integrated with the Interniche IP stack, improperly handles internal resources for TCP segments where the minimum TCP-Header length is less than defined.
This could allow an attacker to create a denial of service condition for TCP services on affected devices by sending specially crafted TCP segments.
Weakness: CWE-400
Which versions are affected by CVE-2022-25622?
It affects 12 products.
Products include Siemens Simatic Cfu Diq Firmware, Siemens Simatic Cfu Pa Firmware, Siemens Simatic S7-1500 Cpu Firmware, Siemens Simatic S7-300 Cpu Firmware, Siemens Simatic S7-400 Pn\/Dp V7 Firmware, Siemens Simatic S7-400h V6 Firmware and 6 more.
How do I fix CVE-2022-25622?
No fix has been published for CVE-2022-25622 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-2022-25622 being exploited?
There is no known exploitation of CVE-2022-25622 in the wild and no public exploit code.
Sources
Also known as GHSA-pgxc-2q22-7c2f.