CVE-2019-5160 : What You Need to Know

A vulnerability in the Cloud Connectivity feature of WAGO PFC200 Firmware versions 03.02.02(14), 03.01.07(13), and 03.00.39(12) allows unauthorized access to firmware update functionality.

Understanding CVE-2019-5160

This CVE involves an improper host validation vulnerability in WAGO PFC200 Firmware.

What is CVE-2019-5160?

The vulnerability in the Cloud Connectivity feature of WAGO PFC200 Firmware versions 03.02.02(14), 03.01.07(13), and 03.00.39(12) enables unauthorized access to firmware update functionality through improper host validation.

The Impact of CVE-2019-5160

Exploiting this vulnerability can lead to unauthorized access to the firmware update functionality, compromising the security of the system.

Technical Details of CVE-2019-5160

This section provides technical details of the CVE.

Vulnerability Description

The vulnerability allows an attacker to exploit the Cloud Connectivity feature, directing the software to connect to an unauthorized host, potentially granting unauthorized access to firmware update functionality.

Affected Systems and Versions

Product: WAGO PFC200 Firmware
Vendor: Wago
Versions Affected: 03.02.02(14), 03.01.07(13), 03.00.39(12)

Exploitation Mechanism

Attackers can send a specially crafted HTTPS POST request to manipulate the Cloud Connectivity software to connect to an unauthorized host, enabling unauthorized access to firmware update functionality.

Mitigation and Prevention

Protect your systems from CVE-2019-5160 with the following steps:

Immediate Steps to Take

Update the firmware to a patched version.
Restrict network access to vulnerable systems.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update firmware and software to the latest versions.
Implement proper access controls and authentication mechanisms.

Patching and Updates

Apply security patches provided by the vendor to address the vulnerability.