CVE-2023-38555 : What You Need to Know

A critical authentication bypass vulnerability has been identified in Fujitsu network devices Si-R series and SR-M series, allowing an unauthenticated attacker to access and modify configuration settings without proper authentication.

Understanding CVE-2023-38555

This section will cover the essential details regarding the authentication bypass vulnerability affecting various Fujitsu network devices.

What is CVE-2023-38555?

The CVE-2023-38555 vulnerability is classified as an authentication bypass that could be exploited by an attacker to gain unauthorized access to configuration settings on affected Fujitsu network devices.

The Impact of CVE-2023-38555

The impact of this vulnerability is significant as it allows a network-adjacent unauthenticated attacker to access, change, or reset crucial configuration settings, posing a serious risk to the security and integrity of the affected products.

Technical Details of CVE-2023-38555

In this section, we will delve into the specific technical aspects of the CVE-2023-38555 vulnerability.

Vulnerability Description

The vulnerability enables an attacker to bypass authentication mechanisms and gain unauthorized access to configuration settings on the following Fujitsu network devices: Si-R series and SR-M series.

Affected Systems and Versions

The following Fujitsu network devices and versions are affected by this vulnerability: Si-R 30B, Si-R 130B, Si-R 90brin, Si-R570B, Si-R370B, Si-R220D, Si-R G100, Si-R G200, Si-R G100B, Si-R G110B, Si-R G200B, Si-R G210, Si-R G211, Si-R G120, Si-R G121, and SR-M 50AP1.

Exploitation Mechanism

The vulnerability allows a network-adjacent unauthenticated attacker to exploit an authentication bypass flaw and manipulate configuration settings without proper authorization.

Mitigation and Prevention

This section outlines the necessary steps and measures to mitigate the risks associated with CVE-2023-38555.

Immediate Steps to Take

It is recommended to apply security patches provided by Fujitsu promptly to address the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Implementing robust access control measures, network segmentation, and regular security assessments can enhance the security posture of the affected devices.

Patching and Updates

Regularly check for security updates and patches from Fujitsu to ensure the network devices are protected against known vulnerabilities.