CVE-2023-36755 : What You Need to Know

A vulnerability has been identified in Siemens RUGGEDCOM devices, specifically in the RUGGEDCOM ROX MX5000, RUGGEDCOM ROX MX5000RE, RUGGEDCOM ROX RX1400, RUGGEDCOM ROX RX1500, RUGGEDCOM ROX RX1501, RUGGEDCOM ROX RX1510, RUGGEDCOM ROX RX1511, RUGGEDCOM ROX RX1512, RUGGEDCOM ROX RX1524, RUGGEDCOM ROX RX1536, and RUGGEDCOM ROX RX5000. This vulnerability, with a CVSS base score of 9.1 (Critical), allows an authenticated privileged remote attacker to execute arbitrary code with root privileges by exploiting a command injection flaw in the SCEP CA Certificate Name parameter of the affected devices.

Understanding CVE-2023-36755

This section provides an overview of CVE-2023-36755, detailing the vulnerability, its impact, technical description, affected systems, and mitigation steps.

What is CVE-2023-36755?

The vulnerability in CVE-2023-36755 is due to missing server-side input sanitation in the SCEP CA Certificate Name parameter of the affected RUGGEDCOM devices. This issue could be exploited by an authenticated remote attacker to run arbitrary code with root privileges.

The Impact of CVE-2023-36755

With a CVSS base score of 9.1, this vulnerability is classified as Critical. An attacker could take advantage of this flaw to execute malicious commands with elevated privileges on the compromised devices, potentially leading to a complete system compromise.

Technical Details of CVE-2023-36755

This section delves into the technical aspects of the CVE-2023-36755 vulnerability, including a detailed description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from the lack of proper input sanitization in the SCEP CA Certificate Name parameter of the affected RUGGEDCOM devices, opening the door for command injection attacks by authenticated attackers.

Affected Systems and Versions

The vulnerability impacts all versions prior to V2.16.0 of the following Siemens RUGGEDCOM devices: ROX MX5000, ROX MX5000RE, ROX RX1400, ROX RX1500, ROX RX1501, ROX RX1510, ROX RX1511, ROX RX1512, ROX RX1524, ROX RX1536, and ROX RX5000.

Exploitation Mechanism

An authenticated remote attacker can exploit the CVE-2023-36755 vulnerability by injecting malicious commands through the SCEP CA Certificate Name parameter in the web interface of the affected devices, potentially leading to the execution of arbitrary code with root privileges.

Mitigation and Prevention

In this section, we outline the steps to mitigate the risks posed by CVE-2023-36755 and prevent potential exploitation of the vulnerability.

Immediate Steps to Take

Siemens recommends updating the affected RUGGEDCOM devices to version V2.16.0 or later to address the vulnerability.
Ensure proper network segmentation and access controls to limit exposure of the devices to untrusted entities.

Long-Term Security Practices

Regularly monitor for security advisories and updates from Siemens regarding the RUGGEDCOM devices.
Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about patches and security updates released by Siemens for the affected devices. Promptly apply patches to ensure the security of the devices and prevent potential exploitation of vulnerabilities.