CVE-2022-46144 Denial of service in SCALANCE SC622-2C
An authenticated attacker can cause a denial of service on the CLI interface by forcefully quitting an SSH connection.
- 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-2022-46144?
CVE-2022-46144 is a high-severity denial of service vulnerability in Siemens SCALANCE SC622-2C, published on 13 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been identified in SCALANCE SC622-2C (6GK5622-2GS00-2AC2) (All versions < V2.3), SCALANCE SC622-2C (6GK5622-2GS00-2AC2) (All versions >= V2.3 < V3.0), SCALANCE SC626-2C (6GK5626-2GS00-2AC2) (All versions < V2.3), SCALANCE SC626-2C (6GK5626-2GS00-2AC2) (All versions >= V2.3 < V3.0), SCALANCE SC632-2C (6GK5632-2GS00-2AC2) (All versions < V2.3), SCALANCE SC632-2C (6GK5632-2GS00-2AC2) (All versions >= V2.3 < V3.0), SCALANCE SC636-2C (6GK5636-2GS00-2AC2) (All versions < V2.3), SCALANCE SC636-2C (6GK5636-2GS00-2AC2) (All versions >= V2.3 < V3.0), SCALANCE SC642-2C (6GK5642-2GS00-2AC2) (All versions < V2.3), SCALANCE SC642-2C (6GK5642-2GS00-2AC2) (All versions >= V2.3 < V3.0), SCALANCE SC646-2C (6GK5646-2GS00-2AC2) (All versions < V2.3), SCALANCE SC646-2C (6GK5646-2GS00-2AC2) (All versions >= V2.3 < V3.0), SCALANCE WAM763-1 (6GK5763-1AL00-7DA0) (All versions < V2.0.0), SCALANCE WAM766-1 (6GK5766-1GE00-7DA0) (All versions < V2.0.0), SCALANCE WAM766-1 (US) (6GK5766-1GE00-7DB0) (All versions < V2.0.0), SCALANCE WAM766-1 EEC (6GK5766-1GE00-7TA0) (All versions < V2.0.0), SCALANCE WAM766-1 EEC (US) (6GK5766-1GE00-7TB0) (All versions < V2.0.0), SCALANCE WUM763-1 (6GK5763-1AL00-3AA0) (All versions < V2.0.0), SCALANCE WUM763-1 (6GK5763-1AL00-3DA0) (All versions < V2.0.0), SCALANCE WUM766-1 (6GK5766-1GE00-3DA0) (All versions < V2.0.0), SCALANCE WUM766-1 (USA) (6GK5766-1GE00-3DB0) (All versions < V2.0.0). Affected devices do not properly process CLI commands after a user forcefully quitted the SSH connection. This could allow an authenticated attacker to make the CLI via SSH or serial interface irresponsive.
Weakness: CWE-664
Which versions are affected by CVE-2022-46144?
It affects 6 products.
Products include Siemens 6gk5622-2gs00-2ac2 Firmware, Siemens 6gk5626-2gs00-2ac2 Firmware, Siemens 6gk5632-2gs00-2ac2 Firmware, Siemens 6gk5636-2gs00-2ac2 Firmware, Siemens 6gk5642-2gs00-2ac2 Firmware, Siemens 6gk5646-2gs00-2ac2 Firmware.
How do I fix CVE-2022-46144?
No fix has been published for CVE-2022-46144 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-2022-46144 being exploited?
There is no known exploitation of CVE-2022-46144 in the wild and no public exploit code.
Sources
Also known as GHSA-p939-r66p-8wwm.