CVE-2019-6813 Denial of service in BMXNOR0200H Ethernet / Serial RTU module
Attackers can cause denial of service on Schneider Electric Modicon controllers by sending truncated SNMP packets to UDP port 161.
- 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-2019-6813?
CVE-2019-6813 is a high-severity denial of service vulnerability in CVE-2019-6813 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) and Modicon M340 controller (all firmware versions), which could cause denial of service when truncated SNMP packets on port 161/UDP are received by the device.
Weakness: CWE-754
Which versions are affected by CVE-2019-6813?
It affects 2 products.
Products include Schneider-Electric Bmxnor0200h Firmware, Schneider-Electric Modicon M340 Firmware.
How do I fix CVE-2019-6813?
No fix has been published for CVE-2019-6813 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-2019-6813 being exploited?
There is no known exploitation of CVE-2019-6813 in the wild and no public exploit code.
Other vulnerabilities in CVE-2019-6813 BMXNOR0200H Ethernet / Serial RTU module
Sources
Also known as GHSA-ffcc-34j7-9r9f.