CVE-2019-6854 Missing authorization in EcoStruxure Geo SCADA Expert (ClearSCADA) with initial releases before 1 January 2019 (see notification for more details)

High 7.8 Published 6 Jan 2020 Updated 4 Aug 2024

Low-privilege users with file system access can delete or modify critical database, setting, or certificate files in EcoStruxure Geo SCADA Expert.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-6854?

CVE-2019-6854 is a high-severity missing authorization vulnerability in EcoStruxure Geo SCADA Expert (ClearSCADA) with initial releases before 1 January 2019 (see notification for more details), published on 6 Jan 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A CWE-287: Improper Authentication vulnerability exists in a folder within EcoStruxure Geo SCADA Expert (ClearSCADA) -with initial releases before 1 January 2019- which could cause a low privilege user to delete or modify database, setting or certificate files. Those users must have access to the file system of that operating system to exploit this vulnerability. Affected versions in current support includes ClearSCADA 2017 R3, ClearSCADA 2017 R2, and ClearSCADA 2017.

Weakness: CWE-287

Which versions are affected by CVE-2019-6854?

It affects 1 product.

Products include Schneider-Electric Clearscada.

How do I fix CVE-2019-6854?

No fix has been published for CVE-2019-6854 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-2019-6854 being exploited?

There is no known exploitation of CVE-2019-6854 in the wild and no public exploit code.

Sources

Also known as GHSA-hwwq-6fg7-74h6.