CVE-2022-40227 Denial of service in SIMATIC HMI Comfort Panels (incl. SIPLUS variants)
Unauthenticated remote attackers can cause permanent denial of service on Siemens HMI panels by sending crafted TCP packets, requiring device reboot.
- 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-2022-40227?
CVE-2022-40227 is a high-severity denial of service vulnerability in Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants), published on 11 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V17 Update 4), SIMATIC HMI KTP Mobile Panels (All versions < V17 Update 4), SIMATIC HMI KTP1200 Basic (All versions < V17 Update 5), SIMATIC HMI KTP400 Basic (All versions < V17 Update 5), SIMATIC HMI KTP700 Basic (All versions < V17 Update 5), SIMATIC HMI KTP900 Basic (All versions < V17 Update 5), SIPLUS HMI KTP1200 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP400 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP700 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP900 BASIC (All versions < V17 Update 5). Affected devices do not properly validate input sent to certain services over TCP. This could allow an unauthenticated remote attacker to cause a permanent denial of service condition (requiring a device reboot) by sending specially crafted TCP packets.
Weakness: CWE-20
Which versions are affected by CVE-2022-40227?
It affects 10 products.
Products include Siemens Simatic Hmi Comfort Panels Firmware, Siemens Simatic Hmi Ktp1200 Basic Firmware, Siemens Simatic Hmi Ktp400 Basic Firmware, Siemens Simatic Hmi Ktp700 Basic Firmware, Siemens Simatic Hmi Ktp900 Basic Firmware, Siemens Simatic Hmi Ktp Mobile Panels Firmware and 4 more.
How do I fix CVE-2022-40227?
No fix has been published for CVE-2022-40227 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-2022-40227 being exploited?
There is no known exploitation of CVE-2022-40227 in the wild and no public exploit code.
Other vulnerabilities in Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants)
Sources
Also known as GHSA-3w5w-5g86-h65c.