CVE-2018-7788 : Security Advisory and Response

Modicon Quantum firmware versions older than V2.40 contain a CWE-255 vulnerability related to Credentials Management, potentially leading to a Denial of Service via Telnet connections.

Understanding CVE-2018-7788

What is CVE-2018-7788?

CVE-2018-7788 is a CWE-255 Credentials Management vulnerability found in Modicon Quantum devices with firmware versions prior to V2.40, posing a risk of Denial of Service attacks.

The Impact of CVE-2018-7788

This vulnerability could allow malicious actors to disrupt services by exploiting the Credentials Management weakness in affected Modicon Quantum devices.

Technical Details of CVE-2018-7788

Vulnerability Description

CWE-255 vulnerability in Modicon Quantum firmware versions prior to V2.40
Risk of Denial of Service through Telnet connections

Affected Systems and Versions

Product: Modicon Quantum with firmware versions prior to V2.40

Exploitation Mechanism

Attackers can exploit the Credentials Management flaw to trigger Denial of Service incidents, particularly via Telnet connections.

Mitigation and Prevention

Immediate Steps to Take

Update affected devices to firmware version V2.40 or newer
Disable Telnet services if not essential

Long-Term Security Practices

Regularly monitor and update firmware to address vulnerabilities
Implement network segmentation to limit the impact of potential attacks

Patching and Updates

Apply patches and firmware updates provided by the vendor to mitigate the CVE-2018-7788 vulnerability