CVE-2023-27465 : What You Need to Know

This CVE record provides details about a vulnerability identified in Siemens SIMOTION industrial automation devices. The vulnerability affects various models when operated at Security Level Low, potentially leading to unauthorized access to confidential configuration information.

Understanding CVE-2023-27465

This section delves into the specifics of CVE-2023-27465, including the vulnerability description, impact, affected systems, and mitigation strategies.

What is CVE-2023-27465?

CVE-2023-27465 is a security vulnerability found in Siemens SIMOTION C240, C240 PN, D410-2 DP, D410-2 DP/PN, D425-2 DP, D425-2 DP/PN, D435-2 DP, D435-2 DP/PN, D445-2 DP/PN, D445-2 DP/PN, D455-2 DP/PN, P320-4 E, and P320-4 S devices. When these devices operate with Security Level Low, unauthorized entities could potentially access sensitive technology object configuration data.

The Impact of CVE-2023-27465

The vulnerability allows unauthenticated attackers to extract confidential technology object (TO) configuration from the affected Siemens SIMOTION devices. This unauthorized access could lead to privacy breaches, intellectual property theft, or other malicious activities.

Technical Details of CVE-2023-27465

In this section, we explore the technical aspects of CVE-2023-27465, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

CVE-2023-27465 involves a lack of protection for access to certain debugging services in Siemens SIMOTION devices when operated under Security Level Low. This oversight enables unauthenticated attackers to retrieve confidential TO configuration data from the devices.

Affected Systems and Versions

The following Siemens SIMOTION devices are impacted by CVE-2023-27465:

SIMOTION C240
SIMOTION C240 PN
SIMOTION D410-2 DP
SIMOTION D410-2 DP/PN
SIMOTION D425-2 DP
SIMOTION D425-2 DP/PN
SIMOTION D435-2 DP
SIMOTION D435-2 DP/PN
SIMOTION D445-2 DP/PN
SIMOTION D445-2 DP/PN
SIMOTION D455-2 DP/PN
SIMOTION P320-4 E
SIMOTION P320-4 S

Exploitation Mechanism

The vulnerability leverages the lack of access protection mechanisms for specific services required for debugging in the affected SIMOTION devices. This allows attackers to extract sensitive configuration information without proper authentication.

Mitigation and Prevention

This section outlines the steps to mitigate the risks associated with CVE-2023-27465, including immediate actions and long-term security practices.

Immediate Steps to Take

Siemens recommends users to operate the affected SIMOTION devices at a higher security level than Low to prevent unauthorized access to debugging services. Additionally, monitoring and restricting network access to the devices can help mitigate the risk of exploitation.

Long-Term Security Practices

Implementing secure network configurations, ensuring timely software updates, and conducting regular security audits on industrial automation systems can enhance overall cybersecurity posture and reduce the likelihood of similar vulnerabilities being exploited in the future.

Patching and Updates

Siemens may release patches or updates to address CVE-2023-27465. Organizations using the affected SIMOTION devices are advised to closely monitor Siemens' security advisories and promptly apply any recommended patches to mitigate the vulnerability.