CVE-2017-6017 Denial of service in Schneider Electric Modicon M340 PLC
Remote attackers can cause Schneider Electric Modicon PLCs to freeze via crafted packets, requiring physical reset 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-2017-6017?
CVE-2017-6017 is a high-severity denial of service vulnerability in Schneider Electric Modicon M340 PLC, published on 30 Jun 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A Resource Exhaustion issue was discovered in Schneider Electric Modicon M340 PLC BMXNOC0401, BMXNOE0100, BMXNOE0110, BMXNOE0110H, BMXNOR0200H, BMXP341000, BMXP342000, BMXP3420102, BMXP3420102CL, BMXP342020, BMXP342020H, BMXP342030, BMXP3420302, BMXP3420302H, and BMXP342030H. A remote attacker could send a specially crafted set of packets to the PLC causing it to freeze, requiring the operator to physically press the reset button on the PLC in order to recover.
Weakness: CWE-400
Which versions are affected by CVE-2017-6017?
It affects 15 products.
Products include Schneider-Electric Bmxnoc0401 Firmware, Schneider-Electric Bmxnoe0100 Firmware, Schneider-Electric Bmxnoe0110 Firmware, Schneider-Electric Bmxnoe0110h Firmware, Schneider-Electric Bmxnor0200h Firmware, Schneider-Electric Modicon M340 Bmxp341000 Firmware and 9 more.
How do I fix CVE-2017-6017?
No fix has been published for CVE-2017-6017 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-2017-6017 being exploited?
There is no known exploitation of CVE-2017-6017 in the wild and no public exploit code.
Other vulnerabilities in Schneider Electric Modicon M340 PLC
Sources
Also known as GHSA-4v7w-jq2v-52pw.