CVE-2018-7243 : Security Advisory and Response

Schneider Electric's 66074 MGE Network Management Card Transverse in MGE UPS and MGE STS has an authorization bypass vulnerability that could allow unauthorized access to the device.

Understanding CVE-2018-7243

This CVE involves a security weakness in Schneider Electric's network management card installed in specific UPS and STS devices.

What is CVE-2018-7243?

The vulnerability allows a remote attacker to gain complete control of the affected devices without proper authorization through the built-in web server.

The Impact of CVE-2018-7243

The vulnerability poses a significant security risk as it enables unauthorized access to critical infrastructure devices, potentially leading to system compromise and data breaches.

Technical Details of CVE-2018-7243

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability lies in the integrated web server (Port 80/443/TCP) of the affected Schneider Electric devices, allowing attackers to bypass the authorization process and gain full control.

Affected Systems and Versions

Product: 66074 MGE Network Management Card Transverse
Vendor: Schneider Electric SE
Versions: All card versions are affected when installed in the following products:
MGE Galaxy 5000
MGE Galaxy 6000
MGE Galaxy 9000
MGE EPS 7000
MGE EPS 8000
MGE EPS 6000
MGE Comet UPS
MGE Galaxy PW
MGE Galaxy 3000
MGE Galaxy 4000

Exploitation Mechanism

The vulnerability can be exploited by sending specially crafted requests to the web server, allowing attackers to bypass the authentication mechanisms and gain unauthorized access.

Mitigation and Prevention

Protecting systems from CVE-2018-7243 requires immediate action and long-term security practices.

Immediate Steps to Take

Disable remote access to the affected devices if not required
Implement network segmentation to limit access to vulnerable devices
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities
Conduct security assessments and penetration testing to identify and address weaknesses
Educate users and administrators about secure configuration practices

Patching and Updates

Check for security advisories and updates from Schneider Electric
Apply patches provided by the vendor to address the vulnerability