EUVD-2024-43152

Comprehensive Technical Analysis of EUVD-2024-43152

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2024-43152 pertains to a stack-based buffer overflow in the Planet WGS-804HPT web server. This vulnerability allows an unauthenticated attacker to send a malicious HTTP request that the web server fails to properly validate for input size before copying data to the stack. This can lead to remote code execution (RCE), which is one of the most severe types of vulnerabilities.

Severity Evaluation:

• Base Score: 9.8 (Critical)
• Base Score Version: CVSS:3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The CVSS score of 9.8 indicates a critical vulnerability due to the following factors:

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): None (N)
• User Interaction (UI): None (N)
• Scope (S): Unchanged (U)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

This high score underscores the potential for significant impact on confidentiality, integrity, and availability of the affected system.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated HTTP Requests: An attacker can send specially crafted HTTP requests to the vulnerable web server.
• Network Access: The attacker needs network access to the web server, which can be achieved through various means such as direct internet exposure or internal network access.

Exploitation Methods:

• Buffer Overflow: The attacker can exploit the vulnerability by sending an HTTP request with a payload that exceeds the buffer size, causing a stack overflow.
• Remote Code Execution: By carefully crafting the payload, the attacker can inject malicious code that gets executed on the server, leading to full control over the system.

3. Affected Systems and Software Versions

Affected Product:

• Product Name: Planet WGS-804HPT
• Product Version: v1.305b210531

Vendor:

• Vendor Name: Planet Technology

Additional Information:

• ENISA ID Product: e69fa136-9e0e-3dbb-87cd-6f3305f69785
• ENISA ID Vendor: 91a74606-48c4-384b-b295-79f113fa6051

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Apply the latest security patches provided by Planet Technology.
• Network Segmentation: Isolate the affected web server from the internet or limit access to trusted networks.
• Firewall Rules: Implement strict firewall rules to block unauthorized access to the web server.
• Intrusion Detection/Prevention Systems (IDS/IPS): Deploy IDS/IPS to monitor and block suspicious HTTP requests.

Long-Term Mitigation:

• Regular Security Audits: Conduct regular security audits and vulnerability assessments.
• Code Review: Perform thorough code reviews to identify and fix similar vulnerabilities.
• Security Training: Provide security training for developers and administrators to understand and mitigate buffer overflow vulnerabilities.

5. Impact on European Cybersecurity Landscape

The vulnerability in the Planet WGS-804HPT web server poses a significant risk to organizations using this product within the European Union. Given the critical nature of the vulnerability, it could be exploited by threat actors to gain unauthorized access to sensitive information, disrupt services, or launch further attacks within the network. This underscores the need for robust cybersecurity measures and timely patch management to protect against such threats.

6. Technical Details for Security Professionals

Vulnerability Details:

• Type: Stack-based buffer overflow
• Cause: Improper input size validation before copying data to the stack
• Exploitation: Sending a malicious HTTP request with a large payload

Detection and Response:

• Log Analysis: Monitor web server logs for unusual HTTP requests and error messages indicating buffer overflow attempts.
• Memory Analysis: Use memory analysis tools to detect anomalies in stack memory usage.
• Incident Response: Have an incident response plan in place to quickly identify, contain, and remediate any successful exploitation attempts.

References:

• CISA Advisory: CISA ICS Advisory
• Vendor Support: Planet Technology Support

Aliases:

• CVE ID: CVE-2024-48871

Assigner:

• Assigner: icscert

EPSS:

• EPSS: N/A

By addressing this vulnerability promptly and effectively, organizations can significantly reduce the risk of exploitation and ensure the security and integrity of their systems.