CVE-2023-1150 : What You Need to Know

This CVE record was published by CERTVDE on June 26, 2023, highlighting a vulnerability in WAGO Series 750-3x/-8x products that could potentially allow an unauthenticated remote attacker to execute a Denial of Service (DoS) attack on the MODBUS server using specially crafted packets.

Understanding CVE-2023-1150

This section will delve into the details of the CVE-2023-1150 vulnerability impacting WAGO Series 750-3x/-8x products.

What is CVE-2023-1150?

The vulnerability identified in CVE-2023-1150 is categorized as CWE-400, representing uncontrolled resource consumption. This flaw could be exploited by remote attackers to disrupt the functionality of the MODBUS server on the affected WAGO devices.

The Impact of CVE-2023-1150

With a CVSS v3.1 base score of 7.5, CVE-2023-1150 holds a high severity level. The attack complexity is rated as low, but the availability impact is deemed high, emphasizing the potential for a successful DoS attack against the vulnerable system.

Technical Details of CVE-2023-1150

In this section, we will explore the technical aspects of CVE-2023-1150, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in WAGO Series 750-3x/-8x products leads to uncontrolled resource consumption, enabling remote attackers to launch a DoS attack on the MODBUS server through specially crafted packets.

Affected Systems and Versions

The impacted products include various versions of Series WAGO 750-3x and 750-8x with firmware versions less than or equal to FW10.

Exploitation Mechanism

The vulnerability can be exploited by unauthenticated remote attackers who send specially crafted packets to the MODBUS server, resulting in uncontrolled resource consumption and potential system downtime.

Mitigation and Prevention

Mitigating the risks associated with CVE-2023-1150 involves taking immediate steps to secure the affected systems and implementing long-term security practices to prevent similar vulnerabilities in the future.

Immediate Steps to Take

Organizations using WAGO Series 750-3x/-8x products should update to a patched firmware version that addresses the vulnerability.
Implement network segmentation to minimize the exposure of the affected systems to potential attackers.
Monitor network traffic for any signs of unusual activity that could indicate an ongoing exploit attempt.

Long-Term Security Practices

Regularly update and patch all devices and systems to protect against known vulnerabilities.
Conduct regular security assessments and penetration testing to identify and address any potential weaknesses in the network infrastructure.
Educate employees on cybersecurity best practices to enhance overall awareness and response to security threats.

Patching and Updates

Stay informed about security advisories and updates released by WAGO regarding CVE-2023-1150. It is critical to promptly apply patches and firmware updates to ensure the security of the devices and protect against potential exploitation of the vulnerability.