CVE-2020-7502 Memory corruption in Modicon M218 Logic Controller (Firmware version 4.3 and prior)
An out-of-bounds write vulnerability in the Modicon M218 Logic Controller allows attackers to cause a denial of service via crafted TCP/IP 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-2020-7502?
CVE-2020-7502 is a high-severity memory corruption vulnerability in Modicon M218 Logic Controller (Firmware version 4.3 and prior), published on 16 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A CWE-787: Out-of-bounds Write vulnerability exists in Modicon M218 Logic Controller (Firmware version 4.3 and prior), which may cause a Denial of Service when specific TCP/IP crafted packets are sent to the Modicon M218 Logic Controller.
Weakness: CWE-787
Which versions are affected by CVE-2020-7502?
It affects 1 product.
Products include Schneider-Electric Modicon M218 Firmware.
How do I fix CVE-2020-7502?
No fix has been published for CVE-2020-7502 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-2020-7502 being exploited?
There is no known exploitation of CVE-2020-7502 in the wild and no public exploit code.
Other vulnerabilities in Modicon M218 Logic Controller (Firmware version 4.3 and prior)
Sources
Also known as GHSA-x4fw-v2f8-f3pj.