CVE-2019-6854 : Exploit Details and Defense Strategies

An issue of CWE-287: Improper Authentication vulnerability has been identified in EcoStruxure Geo SCADA Expert (ClearSCADA) versions released before 1 January 2019. This vulnerability may allow users with limited privileges to delete or change critical files.

Understanding CVE-2019-6854

This CVE involves an Improper Authentication vulnerability in EcoStruxure Geo SCADA Expert (ClearSCADA) versions released prior to 1 January 2019.

What is CVE-2019-6854?

The vulnerability allows low-privileged users to delete or modify files like databases, settings, or certificates if they have access to the operating system's file system.

The Impact of CVE-2019-6854

Users with restricted privileges can potentially compromise critical files, leading to unauthorized changes or deletions.

Technical Details of CVE-2019-6854

This section provides technical insights into the vulnerability.

Vulnerability Description

CWE-287: Improper Authentication vulnerability in EcoStruxure Geo SCADA Expert (ClearSCADA) versions released before 1 January 2019.

Affected Systems and Versions

EcoStruxure Geo SCADA Expert (ClearSCADA) with initial releases before 1 January 2019.
Currently supported versions affected include ClearSCADA 2017 R3, ClearSCADA 2017 R2, and ClearSCADA 2017.

Exploitation Mechanism

Users with limited privileges must have access to the file system of the operating system to exploit this vulnerability.

Mitigation and Prevention

Protect your systems from CVE-2019-6854 with these steps:

Immediate Steps to Take

Apply security patches provided by the vendor.
Restrict access to critical files and directories.
Monitor file system activities for any suspicious behavior.

Long-Term Security Practices

Implement the principle of least privilege for user access.
Regularly update and patch software to prevent vulnerabilities.

Patching and Updates

Stay informed about security updates and apply them promptly to mitigate risks.