CVE-2019-13926 Denial of service in SCALANCE S602
Attackers can cause a denial of service on Siemens SCALANCE switches by sending crafted packets to the web server, requiring a reboot to recover.
- 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-2019-13926?
CVE-2019-13926 is a high-severity denial of service vulnerability in Siemens SCALANCE S602, published on 11 Feb 2020. 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 SCALANCE S602 (All versions >= V3.0 and < V4.1), SCALANCE S612 (All versions >= V3.0 and < V4.1), SCALANCE S623 (All versions >= V3.0 and < V4.1), SCALANCE S627-2M (All versions >= V3.0 and < V4.1). Specially crafted packets sent to port 443/tcp of affected devices could cause a Denial-of-Service condition of the web server. A cold reboot is required to restore the functionality of the device.
Weakness: CWE-400
Which versions are affected by CVE-2019-13926?
It affects 4 products.
Products include Siemens Scalance S602 Firmware, Siemens Scalance S612 Firmware, Siemens Scalance S623 Firmware, Siemens Scalance S627-2m Firmware.
How do I fix CVE-2019-13926?
No fix has been published for CVE-2019-13926 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-2019-13926 being exploited?
There is no known exploitation of CVE-2019-13926 in the wild and no public exploit code.
Other vulnerabilities in Siemens SCALANCE S602
Sources
Also known as GHSA-vwh5-q72r-gr35.