CVE-2019-6820 Missing authorization in Modicon and PacDrive Controller, All versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2
Attackers can modify device IP configuration via specific Ethernet frames due to missing authentication for critical functions in Modicon and PacDrive controllers.
- 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-2019-6820?
CVE-2019-6820 is a high-severity missing authorization vulnerability in Modicon and PacDrive Controller, All versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2, published on 22 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a specific Ethernet frame is received in all versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2
Weakness: CWE-306
Which versions are affected by CVE-2019-6820?
It affects 12 products.
Products include Schneider-Electric Atv Imc Drive Controller Firmware, Schneider-Electric Modicon Lmc058 Firmware, Schneider-Electric Modicon Lmc078 Firmware, Schneider-Electric Modicon M100 Firmware, Schneider-Electric Modicon M200 Firmware, Schneider-Electric Modicon M221 Firmware and 6 more.
How do I fix CVE-2019-6820?
No fix has been published for CVE-2019-6820 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2019-6820 being exploited?
There is no known exploitation of CVE-2019-6820 in the wild and no public exploit code.
Sources
Also known as GHSA-phf4-8g7h-893g.