CVE-2022-43443 : Security Advisory and Response

A vulnerability has been identified in Buffalo network devices that could allow a network-adjacent attacker to execute arbitrary OS commands. Read on to understand the impact, technical details, and mitigation steps associated with CVE-2022-43443.

Understanding CVE-2022-43443

This section delves into the specifics of CVE-2022-43443.

What is CVE-2022-43443?

The CVE-2022-43443 vulnerability affects Buffalo network devices, specifically the firmware versions detailed in the vulnerability description. It enables a network-adjacent attacker to run arbitrary OS commands by sending a specially crafted request to the device's management page.

The Impact of CVE-2022-43443

The impact of this vulnerability is significant as it allows attackers in close network proximity to execute unauthorized commands on affected Buffalo network devices.

Technical Details of CVE-2022-43443

Explore the technical aspects of CVE-2022-43443 below.

Vulnerability Description

The vulnerability resides in the firmware of the following Buffalo network devices: WSR-3200AX4S, WSR-3200AX4B, WSR-2533DHP, WSR-2533DHP2, WSR-A2533DHP2, WSR-2533DHP3, WSR-A2533DHP3, WSR-2533DHPL, WSR-2533DHPL2, WSR-2533DHPLS, and WCR-1166DS. Attackers can exploit this flaw by sending crafted requests to the management page.

Affected Systems and Versions

The affected systems include Buffalo network devices running the specified firmware versions. Users of these devices should take immediate action to mitigate the risk of exploitation.

Exploitation Mechanism

To exploit CVE-2022-43443, attackers need to send a specifically designed request to the management page of vulnerable Buffalo network devices, triggering the execution of malicious OS commands.

Mitigation and Prevention

Learn how to protect your systems from CVE-2022-43443 using the following strategies.

Immediate Steps to Take

Users of affected Buffalo network devices should apply security patches promptly and restrict network access to mitigate the risk of exploitation. Implementing strong firewall rules and network segmentation can also help in preventing unauthorized access.

Long-Term Security Practices

In the long term, organizations should conduct regular security audits, keep systems up-to-date with the latest firmware releases, and educate users on best security practices to enhance overall resilience against cyber threats.

Patching and Updates

Buffalo INC. has released patches to address the vulnerability in the affected firmware versions. Users are advised to update their devices to the latest firmware to eliminate the risk of OS command injection.