Description
Embedded malicious code vulnerability in Vision1210, in the build 5 of operating system version 4.3, which could allow a remote attacker to store base64-encoded malicious code in the device's data tables via the PCOM protocol, which can then be retrieved by a client and executed on the device.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2023-33533
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2023-33533 pertains to an embedded malicious code vulnerability in the Vision1210 device, specifically in build 5 of operating system version 4.3. This vulnerability allows a remote attacker to store base64-encoded malicious code in the device's data tables via the PCOM protocol, which can then be retrieved and executed on the device.
Severity Evaluation:
- Base Score: 9.1
- Base Score Version: 3.1
- Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
The CVSS score of 9.1 indicates a critical vulnerability. The key factors contributing to this high score include:
- Attack Vector (AV:N): The vulnerability can be exploited over the network.
- Attack Complexity (AC:L): The attack requires low complexity.
- Privileges Required (PR:N): No privileges are required to exploit the vulnerability.
- User Interaction (UI:N): No user interaction is required.
- Scope (S:U): The scope is unchanged.
- Confidentiality (C:H): High impact on confidentiality.
- Integrity (I:N): No impact on integrity.
- Availability (A:H): High impact on availability.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Remote Exploitation: An attacker can exploit this vulnerability remotely by sending malicious base64-encoded code via the PCOM protocol.
- Data Table Manipulation: The attacker can store the malicious code in the device's data tables, which can then be retrieved and executed by a client.
Exploitation Methods:
- Network-Based Attacks: The attacker can leverage network access to send the malicious code to the device.
- Protocol Manipulation: The PCOM protocol is used to inject the malicious code, indicating that the attacker needs to understand and manipulate this protocol.
3. Affected Systems and Software Versions
Affected Systems:
- Device: Vision1210
- Operating System Version: 4.3, build 5
Vendor:
- Unitronics
4. Recommended Mitigation Strategies
Immediate Mitigation:
- Network Segmentation: Isolate the affected devices from the network to prevent remote exploitation.
- Firewall Rules: Implement strict firewall rules to block unauthorized access to the PCOM protocol.
- Monitoring: Increase monitoring of network traffic to detect any suspicious activity related to the PCOM protocol.
Long-Term Mitigation:
- Patch Management: Apply the latest patches and updates provided by Unitronics.
- Firmware Upgrade: Upgrade the device firmware to a version that addresses this vulnerability.
- Access Control: Implement strong access control measures to restrict access to the device.
5. Impact on European Cybersecurity Landscape
The vulnerability in Vision1210 devices poses a significant risk to European organizations that rely on these devices for industrial automation and control. The potential for remote exploitation and the high impact on confidentiality and availability make this a critical concern for cybersecurity professionals. The widespread use of such devices in critical infrastructure sectors, such as manufacturing and energy, underscores the need for immediate and effective mitigation strategies.
6. Technical Details for Security Professionals
Vulnerability Details:
- CVE ID: CVE-2023-2003
- GSD ID: GSD-2023-2003
- Assigner: INCIBE
Technical Insights:
- Protocol Analysis: Security professionals should analyze the PCOM protocol to understand how it can be manipulated to inject malicious code.
- Data Table Security: Implement measures to secure the device's data tables, such as encryption and integrity checks.
- Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for any anomalous activity related to the PCOM protocol.
References:
Conclusion: The vulnerability in Vision1210 devices represents a critical risk to organizations using these devices. Immediate mitigation strategies, including network segmentation and strict access control, are essential to protect against potential exploitation. Long-term measures, such as patch management and firmware upgrades, are necessary to ensure the ongoing security of these devices. The European cybersecurity landscape must prioritize addressing such vulnerabilities to safeguard critical infrastructure and industrial automation systems.