CVE-2018-7788 Denial of service in Modicon Quantum with firmware versions prior to V2.40.
A denial of service vulnerability in Modicon Quantum PLCs allows attackers to disrupt operations via Telnet connections.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-7788?
CVE-2018-7788 is a medium-severity denial of service vulnerability in Modicon Quantum with firmware versions prior to V2.40., published on 22 May 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A CWE-255 Credentials Management vulnerability exists in Modicon Quantum with firmware versions prior to V2.40. which could cause a Denial Of Service when using a Telnet connection.
Weakness: CWE-255
Which versions are affected by CVE-2018-7788?
It affects 1 product.
Products include Schneider-Electric Modicon Quantum Firmware.
How do I fix CVE-2018-7788?
No fix has been published for CVE-2018-7788 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-2018-7788 being exploited?
There is no known exploitation of CVE-2018-7788 in the wild and no public exploit code.
Other vulnerabilities in Modicon Quantum with firmware versions prior to V2.40.
Sources
Also known as GHSA-4pc3-f84w-r58f.