CVE-2019-6528 : Security Advisory and Response

CVE-2019-6528 pertains to a vulnerability in PSI GridConnect GmbH's Telecontrol Gateway and Smart Telecontrol Unit family, IEC104 Security Proxy.

Understanding CVE-2019-6528

This CVE involves a security flaw in the web application of the affected products, potentially enabling attackers to execute arbitrary code.

What is CVE-2019-6528?

The vulnerability in the Telecontrol Gateway and Smart Telecontrol Unit products allows attackers to exploit the browser's interpretation of input as active HTML, JavaScript, or VBScript, leading to code execution.

The Impact of CVE-2019-6528

This vulnerability could result in unauthorized code execution by malicious actors, posing a significant risk to the confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2019-6528

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability stems from improper neutralization of input during web page generation, specifically categorized as 'CROSS-SITE SCRIPTING' (CWE-79).

Affected Systems and Versions

Telecontrol Gateway 3G Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior
Telecontrol Gateway XS-MU Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior
Telecontrol Gateway VM Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior
Smart Telecontrol Unit TCG Versions 5.0.27, 5.1.19, 6.0.16 and prior
IEC104 Security Proxy Version 2.2.10 and prior

Exploitation Mechanism

The vulnerability allows attackers to inject and execute malicious code through the affected web application, compromising the security of the systems.

Mitigation and Prevention

Protecting systems from CVE-2019-6528 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users and administrators about safe browsing practices and potential threats.
Keep systems and software up to date with the latest security updates.
Employ web application firewalls to filter and monitor incoming traffic.

Patching and Updates

Regularly check for security advisories and updates from PSI GridConnect GmbH to ensure that systems are protected against known vulnerabilities.