CVE-2022-3843 : Security Advisory and Response

This article provides detailed information about CVE-2022-3843, a critical vulnerability impacting WAGO Unmanaged Switches.

Understanding CVE-2022-3843

CVE-2022-3843 is a vulnerability found in WAGO Unmanaged Switches that allows remote attackers to access system information and configure limited parameters without proper authorization.

What is CVE-2022-3843?

The CVE-2022-3843 vulnerability in WAGO Unmanaged Switches (852-111/000-001) with firmware version 01 involves an undocumented configuration interface that can be exploited by attackers to manipulate system configurations.

The Impact of CVE-2022-3843

This critical vulnerability has a CVSS base score of 9.1, indicating a high impact on confidentiality and availability. Attackers can exploit this flaw to read confidential system data and disrupt availability.

Technical Details of CVE-2022-3843

CVE-2022-3843 is classified under CWE-912 (Hidden functionality) and CAPEC-629 (Unauthorized Use of Device Resources).

Vulnerability Description

The vulnerability allows unauthorized access to the configuration interface of WAGO Unmanaged Switches, leading to potential information theft and unauthorized configuration changes.

Affected Systems and Versions

WAGO Unmanaged Switch (852-111/000-001) with firmware version 01 is affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely to gain access to system information and manipulate certain parameters without proper authorization.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-3843, WAGO Unmanaged Switch users are advised to take immediate steps and implement long-term security practices.

Immediate Steps to Take

Update to the latest firmware version provided by WAGO to address the vulnerability.
Restrict network access to the switches and implement firewall rules to prevent unauthorized access.

Long-Term Security Practices

Regularly monitor and audit network devices for any unauthorized changes or access.
Educate users on best security practices and the importance of timely updates.

Patching and Updates

Stay informed about security advisories from WAGO and apply patches promptly to safeguard your systems.