EUVD-2024-41045

Comprehensive Technical Analysis of EUVD-2024-41045

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2024-41045, also known as CVE-2024-44551, pertains to a stack overflow in Tenda AX1806 v1.0.0.1. This vulnerability is located within the formGetIptv function, specifically through the iptv.city.vlan parameter. The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a critical severity level. The scoring vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources.
• Privileges Required (PR): None (N) - No privileges are required to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required.
• Scope (S): Unchanged (U) - The vulnerability does not change the security scope.
• Confidentiality (C): High (H) - Complete loss of confidentiality.
• Integrity (I): High (H) - Complete loss of integrity.
• Availability (A): High (H) - Complete loss of availability.

Given these metrics, the vulnerability poses a significant risk to affected systems, potentially leading to complete system compromise.

2. Potential Attack Vectors and Exploitation Methods

The stack overflow vulnerability can be exploited by sending a specially crafted request to the formGetIptv function with a malicious iptv.city.vlan parameter. This can result in arbitrary code execution, allowing attackers to:

• Execute Remote Code: Run malicious code on the affected device.
• Gain Unauthorized Access: Access sensitive information or control the device.
• Disrupt Services: Cause denial of service (DoS) by crashing the device.

Potential attack vectors include:

• Network-Based Attacks: Exploiting the vulnerability over the network without requiring physical access.
• Automated Scripts: Using automated scripts to scan for vulnerable devices and exploit them en masse.

3. Affected Systems and Software Versions

The vulnerability specifically affects Tenda AX1806 devices running firmware version v1.0.0.1. It is crucial to identify and update all instances of this device within the network to mitigate the risk.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Firmware Update: Immediately update the firmware to a version that addresses this vulnerability.
• Network Segmentation: Isolate vulnerable devices from critical network segments to limit potential damage.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activity targeting the formGetIptv function.
• Firewall Rules: Implement strict firewall rules to restrict access to the vulnerable function.
• Regular Audits: Conduct regular security audits to identify and address similar vulnerabilities.

5. Impact on European Cybersecurity Landscape

The presence of this vulnerability in widely used devices like the Tenda AX1806 underscores the importance of robust cybersecurity measures in the European Union. The potential for widespread exploitation could lead to significant disruptions in both private and public sectors, affecting critical infrastructure, businesses, and individual users. This highlights the need for:

• Enhanced Vulnerability Management: Improved processes for identifying, reporting, and mitigating vulnerabilities.
• Collaboration: Increased collaboration between vendors, security researchers, and regulatory bodies.
• Public Awareness: Raising awareness among users and organizations about the importance of timely updates and security best practices.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerable Function: formGetIptv
• Vulnerable Parameter: iptv.city.vlan
• Exploitation Method: Crafting a request that overflows the stack buffer in the formGetIptv function.
• Detection: Monitor network traffic for unusual patterns targeting the formGetIptv function.
• Mitigation: Implement input validation and sanitization for the iptv.city.vlan parameter to prevent buffer overflows.

Conclusion

EUVD-2024-41045 represents a critical vulnerability that requires immediate attention. By understanding the technical details and implementing the recommended mitigation strategies, organizations can significantly reduce the risk of exploitation. Continuous monitoring and proactive security measures are essential to safeguard against such threats in the evolving cybersecurity landscape.