CVE-2019-6831 Denial of service in BMXNOR0200H Ethernet / Serial RTU module
An attacker can cause disconnection of active connections in Schneider Electric RTU modules by sending a high volume of IEC 60870-5-104 packets.
- 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-2019-6831?
CVE-2019-6831 is a high-severity denial of service vulnerability in Schneider Electric SE BMXNOR0200H Ethernet / Serial RTU module, published on 17 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in BMXNOR0200H Ethernet / Serial RTU module (all firmware versions), which could cause disconnection of active connections when an unusually high number of IEC 60870- 5-104 packets are received by the module on port 2404/TCP.
Weakness: CWE-754
Which versions are affected by CVE-2019-6831?
It affects 1 product.
Products include Schneider-Electric Bmxnor0200h Firmware.
How do I fix CVE-2019-6831?
No fix has been published for CVE-2019-6831 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-2019-6831 being exploited?
There is no known exploitation of CVE-2019-6831 in the wild and no public exploit code.
Other vulnerabilities in Schneider Electric SE BMXNOR0200H Ethernet / Serial RTU module
Sources
Also known as GHSA-gvw6-phvj-chmf.