CVE-2023-42797 : Vulnerability Insights and Analysis

A vulnerability has been identified in CP-8031 MASTER MODULE and CP-8050 MASTER MODULE devices by Siemens. This flaw in the network configuration service could allow an authenticated remote attacker to inject commands with root privileges during device startup.

Understanding CVE-2023-42797

This CVE-2023-42797 impacts Siemens CP-8031 and CP-8050 MASTER MODULE devices due to a flaw in ipv4 address conversion in the network configuration service.

What is CVE-2023-42797?

CVE-2023-42797 is a vulnerability in Siemens CP-8031 and CP-8050 MASTER MODULE devices that could enable a remote attacker to execute commands with root privileges by uploading specially crafted network configuration.

The Impact of CVE-2023-42797

The vulnerability allows an authenticated remote attacker to manipulate the network configuration and execute commands with elevated privileges during the device's startup process.

Technical Details of CVE-2023-42797

The following technical details outline the vulnerability.

Vulnerability Description

The flaw lies in the network configuration service's handling of ipv4 addresses, potentially leading to the use of uninitialized variables in validation steps.

Affected Systems and Versions

Vendor: Siemens
Affected Products:
CP-8031 MASTER MODULE: All versions < CPCI85 V05.20
CP-8050 MASTER MODULE: All versions < CPCI85 V05.20

Exploitation Mechanism

An authenticated remote attacker can exploit this vulnerability by uploading specially crafted network configurations to inject and execute malicious commands during the device startup.

Mitigation and Prevention

To address CVE-2023-42797, consider the following mitigation steps.

Immediate Steps to Take

Siemens recommends updating affected devices to version CPCI85 V05.20 or higher to mitigate the vulnerability.
Implement network security measures to prevent unauthorized access to the device's configuration.

Long-Term Security Practices

Regularly monitor and audit network configurations to detect any unauthorized changes.
Conduct security training for personnel to recognize and respond to potential threats.

Patching and Updates

Ensure timely installation of security patches and firmware updates provided by Siemens to mitigate known vulnerabilities and enhance the security posture of the affected devices.