CVE-2019-19279 Denial of service in SIPROTEC 4 and SIPROTEC Compact relays equipped with EN100 Ethernet communication modules
Crafted UDP packets can crash SIPROTEC relays, requiring a manual reboot to restore service.
- 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-2019-19279?
CVE-2019-19279 is a high-severity denial of service vulnerability in Siemens AG SIPROTEC 4 and SIPROTEC Compact relays equipped with EN100 Ethernet communication modules, published on 10 Mar 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 SIPROTEC 4 and SIPROTEC Compact relays equipped with EN100 Ethernet communication modules (All versions). Specially crafted packets sent to port 50000/UDP of the EN100 Ethernet communication modules could cause a Denial-of-Service of the affected device. A manual reboot is required to recover the service of the device. At the time of advisory publication no public exploitation of this security vulnerability was known to Siemens.
Weakness: CWE-20
Which versions are affected by CVE-2019-19279?
It affects 2 products.
Products include Siemens Siprotec 4, Siemens Siprotec Compact.
How do I fix CVE-2019-19279?
No fix has been published for CVE-2019-19279 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-2019-19279 being exploited?
There is no known exploitation of CVE-2019-19279 in the wild and no public exploit code.
Sources
Also known as GHSA-f47r-9fwr-4p3h.