Description
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-201918
1. Vulnerability Assessment and Severity Evaluation
The vulnerability identified in SIMATIC CN 4100 (versions < V4.0.1) involves the storage of sensitive information within the firmware. This vulnerability is rated with a CVSS Base Score of 9.2, indicating a critical severity level. The CVSS vector CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N breaks down as follows:
- Attack Vector (AV:N): Network, meaning the vulnerability can be exploited remotely.
- Attack Complexity (AC:H): High, suggesting that the attack requires specialized conditions or knowledge.
- Authentication (AT:N): None, indicating no authentication is required to exploit the vulnerability.
- Privileges Required (PR:N): None, meaning no special privileges are needed.
- User Interaction (UI:N): None, implying no user interaction is required.
- Confidentiality Impact (VC:H): High, indicating significant loss of confidentiality.
- Integrity Impact (VI:H): High, suggesting significant loss of integrity.
- Availability Impact (VA:H): High, meaning significant loss of availability.
- Scope Change (SC:N): None, indicating the vulnerability does not affect resources beyond the security scope.
- Secondary Impacts (SI:N/SA:N): None, suggesting no secondary impacts on confidentiality, integrity, or availability.
2. Potential Attack Vectors and Exploitation Methods
Given the high attack complexity, potential attack vectors could include:
- Firmware Analysis: An attacker could reverse-engineer the firmware to extract sensitive information.
- Network Sniffing: If the firmware is transmitted over the network, an attacker could intercept and analyze the data.
- Supply Chain Attacks: Compromising the supply chain to gain access to the firmware before it is deployed.
Exploitation methods might involve:
- Reverse Engineering: Using tools like IDA Pro or Ghidra to analyze the firmware.
- Firmware Extraction: Extracting the firmware from the device using specialized hardware tools.
- Network Interception: Using tools like Wireshark to capture firmware updates transmitted over the network.
3. Affected Systems and Software Versions
The vulnerability affects all versions of SIMATIC CN 4100 prior to V4.0.1. Organizations using these versions are at risk and should prioritize updating to the latest version.
4. Recommended Mitigation Strategies
To mitigate this vulnerability, the following strategies are recommended:
- Firmware Update: Immediately update to SIMATIC CN 4100 V4.0.1 or later.
- Network Segmentation: Isolate critical systems from the broader network to limit exposure.
- Access Controls: Implement strict access controls to limit who can access and update the firmware.
- Monitoring and Logging: Enhance monitoring and logging to detect any unauthorized access or attempts to extract firmware.
- Supply Chain Security: Ensure the integrity of the supply chain to prevent tampering with firmware before deployment.
5. Impact on European Cybersecurity Landscape
This vulnerability has significant implications for the European cybersecurity landscape, particularly in industrial control systems (ICS) and critical infrastructure. The potential for loss of confidentiality, integrity, and availability could lead to:
- Operational Disruptions: Compromised ICS could lead to operational disruptions in critical sectors like energy, manufacturing, and transportation.
- Data Breaches: Sensitive information stored in the firmware could be exposed, leading to data breaches.
- Regulatory Compliance: Organizations may face regulatory scrutiny and potential fines under GDPR and other relevant regulations.
6. Technical Details for Security Professionals
For security professionals, the following technical details are pertinent:
- Firmware Analysis: Use static and dynamic analysis tools to identify and extract sensitive information from the firmware.
- Network Security: Implement robust network security measures, including encryption and secure protocols, to protect firmware updates.
- Incident Response: Develop and test incident response plans specific to firmware vulnerabilities, including procedures for firmware extraction and analysis.
- Patch Management: Ensure a robust patch management process to quickly apply updates and mitigate vulnerabilities.
Conclusion
The vulnerability in SIMATIC CN 4100 (versions < V4.0.1) is critical and requires immediate attention. Organizations should prioritize updating to the latest firmware version and implement additional security measures to protect against potential exploitation. The impact on the European cybersecurity landscape underscores the need for vigilance and proactive security management in critical infrastructure and ICS environments.