CVE-2018-12979 : Exploit Details and Defense Strategies

A vulnerability has been identified in WAGO e!DISPLAY 762-3000 to 762-3003 devices running firmware versions prior to FW 02. The issue allows a logged-in user to manipulate critical files through the Web-Based Management interface.

Understanding CVE-2018-12979

This CVE involves a security flaw in WAGO e!DISPLAY devices that could be exploited by authenticated users to overwrite important files.

What is CVE-2018-12979?

The vulnerability in WAGO e!DISPLAY devices with firmware versions before FW 02 enables unauthorized file manipulation by leveraging weak access controls in the Web-Based Management interface.

The Impact of CVE-2018-12979

The vulnerability poses a risk of unauthorized access and manipulation of critical files on affected devices, potentially leading to system compromise or data loss.

Technical Details of CVE-2018-12979

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Weak permissions in WAGO e!DISPLAY devices allow authenticated users to overwrite essential files by exploiting the unregulated file upload feature in the Web-Based Management interface.

Affected Systems and Versions

Product: WAGO e!DISPLAY 762-3000 to 762-3003
Firmware Versions: Prior to FW 02

Exploitation Mechanism

The vulnerability can be exploited by a logged-in user through the unregulated file upload functionality in the Web-Based Management interface.

Mitigation and Prevention

Protecting systems from CVE-2018-12979 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the firmware of WAGO e!DISPLAY devices to FW 02 or later to mitigate the vulnerability.
Restrict access to the Web-Based Management interface to authorized personnel only.

Long-Term Security Practices

Regularly monitor and audit file uploads and permissions on the devices.
Implement network segmentation to limit the impact of potential unauthorized access.

Patching and Updates

Apply security patches and updates provided by WAGO to address the vulnerability and enhance system security.