CVE-2023-1620 : What You Need to Know

This CVE involves a vulnerability in multiple WAGO devices across various versions that could potentially allow an authenticated remote attacker with high privileges to perform a Denial of Service (DoS) attack on the device by sending a specifically crafted packet to the CODESYS V2 runtime.

Understanding CVE-2023-1620

This section will delve into the details surrounding CVE-2023-1620 including its impact, technical aspects, and mitigation strategies.

What is CVE-2023-1620?

The vulnerability in question pertains to multiple WAGO devices in various versions that can be exploited by an authenticated remote attacker with elevated privileges to disrupt the device's operation by sending a specially crafted packet to the CODESYS V2 runtime.

The Impact of CVE-2023-1620

The impact of this vulnerability is rated as medium severity. With a base CVSS score of 4.9, the availability of affected systems is significantly impacted, potentially leading to service disruption and downtime.

Technical Details of CVE-2023-1620

This section will provide a deeper insight into the technical aspects of CVE-2023-1620, including the vulnerability description, affected systems, and exploitation mechanisms.

Vulnerability Description

The vulnerability stems from improper input validation in multiple WAGO devices, allowing an authenticated remote attacker to trigger a DoS condition by sending a maliciously crafted packet to the CODESYS V2 runtime.

Affected Systems and Versions

Numerous WAGO devices across different versions are susceptible to this vulnerability. Devices such as 750-8202, 750-8203, 750-8204, 750-8206, and others up to specific firmware versions are impacted.

Exploitation Mechanism

To exploit this vulnerability, an authenticated remote attacker with high privileges needs to send a specifically crafted packet to the CODESYS V2 runtime on the affected WAGO device, triggering the DoS condition.

Mitigation and Prevention

In light of CVE-2023-1620, it is crucial to implement immediate steps and adopt long-term security practices to mitigate the risk posed by this vulnerability and secure the affected systems effectively.

Immediate Steps to Take

Organizations should apply security patches and updates provided by WAGO for the affected devices promptly.
Network segmentation and access controls can help limit the attack surface and reduce the impact of potential exploits.

Long-Term Security Practices

Regular security audits and vulnerability assessments can help in identifying and addressing security gaps proactively.
Employee training on cybersecurity best practices and incident response protocols is essential to enhance overall security posture.

Patching and Updates

Staying vigilant about security advisories and maintaining a proactive approach towards applying patches and updates from the vendor are critical in safeguarding WAGO devices against CVE-2023-1620.