CVE-2020-12511 Explained : Impact and Mitigation

Pepper+Fuchs Comtrol IO-Link Master in Version 1.5.48 and below is susceptible to a Cross-Site Request Forgery (CSRF) vulnerability in the web interface.

Understanding CVE-2020-12511

This CVE involves a high-severity CSRF vulnerability affecting Pepper+Fuchs Comtrol IO-Link Master.

What is CVE-2020-12511?

The vulnerability in Pepper+Fuchs Comtrol IO-Link Master allows attackers to perform unauthorized actions via a crafted web request.

The Impact of CVE-2020-12511

CVSS Base Score: 8.8 (High Severity)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High

Technical Details of CVE-2020-12511

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability is a Cross-Site Request Forgery (CSRF) issue in the web interface of Pepper+Fuchs Comtrol IO-Link Master.

Affected Systems and Versions

Affected Product: Comtrol IO-Link Master
Vendor: Pepper+Fuchs
Affected Versions: <= 1.5.48 (Custom version)

Exploitation Mechanism

Attackers can exploit this vulnerability by tricking a user into making a request that the web application processes.

Mitigation and Prevention

Protect your systems from CVE-2020-12511 with the following steps:

Immediate Steps to Take

Update affected units with the following firmware packages:
U-Boot bootloader version 1.36 or newer
System image version 1.52 or newer
Application base version 1.6.11 or newer

Long-Term Security Practices

Regularly monitor and update firmware to patch vulnerabilities
Implement strong access controls and authentication mechanisms

Patching and Updates

Stay informed about security advisories and apply patches promptly