CVE-2019-13942 Memory corruption in EN100 Ethernet module DNP3 variant
An unauthorized user can cause a denial-of-service condition on Siemens EN100 Ethernet modules via crafted packets, requiring manual restarts for recovery.
- 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-2019-13942?
CVE-2019-13942 is a high-severity memory corruption vulnerability in Siemens AG EN100 Ethernet module DNP3 variant, published on 12 Dec 2019. 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 EN100 Ethernet module DNP3 variant (All versions), EN100 Ethernet module IEC 61850 variant (All versions < V4.37), EN100 Ethernet module IEC104 variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module PROFINET IO variant (All versions). An unauthorized user could exploit a buffer overflow vulnerability in the webserver. Specially crafted packets sent could cause a Denial-of-Service condition and if certain conditions are met, the affected devices must be restarted manually to fully recover. At the time of advisory publication no public exploitation of this security vulnerability was known.
Weakness: CWE-119
Which versions are affected by CVE-2019-13942?
It affects 5 products.
Products include Siemens En100 Ethernet Module With Firmware Variant Dnp3 Tcp, Siemens En100 Ethernet Module With Firmware Variant Iec104, Siemens En100 Ethernet Module With Firmware Variant Iec 61850, Siemens En100 Ethernet Module With Firmware Variant Modbus Tcp, Siemens En100 Ethernet Module With Firmware Variant Profinet Io.
How do I fix CVE-2019-13942?
No fix has been published for CVE-2019-13942 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-13942 being exploited?
There is no known exploitation of CVE-2019-13942 in the wild and no public exploit code.
Other vulnerabilities in Siemens AG EN100 Ethernet module DNP3 variant
Sources
Also known as GHSA-7fgp-2mmv-w74c.