CVE-2024-41460

Comprehensive Technical Analysis of CVE-2024-41460

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2024-41460 CISA Vulnerability Name: CVE-2024-41460 Description: Tenda FH1201 v1.2.0.14 contains a stack-based buffer overflow vulnerability via the entrys parameter at ip/goform/RouteStatic. CVSS Score: 9.8

Severity Evaluation: The CVSS score of 9.8 indicates a critical vulnerability. This high score is due to the potential for remote code execution, which can lead to complete system compromise. The vulnerability allows an attacker to overwrite the stack memory, potentially leading to arbitrary code execution or a denial of service (DoS).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: An attacker can send a specially crafted HTTP request to the ip/goform/RouteStatic endpoint with a malicious entrys parameter.
• Network-Based Attacks: Given that the vulnerability is in a network device, attackers can exploit it over the network, making it accessible to both local and remote attackers.

Exploitation Methods:

• Buffer Overflow: By sending a large amount of data in the entrys parameter, an attacker can overflow the stack buffer, leading to code execution or a crash.
• Code Injection: If the attacker can control the data being written to the stack, they may inject malicious code to be executed.

3. Affected Systems and Software Versions

Affected Systems:

• Tenda FH1201 v1.2.0.14

Software Versions:

• Firmware version 1.2.0.14

Note: Other versions of the Tenda FH1201 firmware may also be affected, but this has not been confirmed. Users should check for updates and patches from the vendor.

4. Recommended Mitigation Strategies

Immediate Actions:

• Patch Management: Apply the latest firmware update from Tenda as soon as it becomes available.
• Network Segmentation: Isolate the affected device from critical networks to limit the potential impact of an exploit.
• Firewall Rules: Implement strict firewall rules to restrict access to the ip/goform/RouteStatic endpoint.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits and vulnerability assessments on all network devices.
• Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activity targeting the vulnerable endpoint.
• User Education: Educate users on the importance of keeping firmware up to date and the risks associated with unpatched devices.

5. Impact on Cybersecurity Landscape

Broader Implications:

• IoT Security: This vulnerability highlights the ongoing challenges in securing Internet of Things (IoT) devices, which are often deployed with minimal security features.
• Supply Chain Risks: Vulnerabilities in network devices can have cascading effects, impacting the security of entire networks and supply chains.
• Regulatory Compliance: Organizations must ensure compliance with regulations such as GDPR and CCPA, which require robust security measures to protect data.

6. Technical Details for Security Professionals

Vulnerability Details:

• Type: Stack-based buffer overflow
• Location: ip/goform/RouteStatic endpoint
• Parameter: entrys

Exploitation Steps:

1. Identify Target: Locate the Tenda FH1201 device on the network.
2. Craft Payload: Create a malicious HTTP request with an oversized entrys parameter.
3. Send Request: Use a tool like curl or a custom script to send the crafted request to the vulnerable endpoint.
4. Monitor Impact: Observe the device for signs of a crash or unexpected behavior, which may indicate successful exploitation.

Detection and Response:

• Log Analysis: Monitor logs for unusual activity related to the ip/goform/RouteStatic endpoint.
• Anomaly Detection: Use anomaly detection tools to identify deviations from normal traffic patterns.
• Incident Response: Have an incident response plan in place to quickly address any detected exploitation attempts.

Conclusion: CVE-2024-41460 represents a significant risk to organizations using the Tenda FH1201 v1.2.0.14 firmware. Immediate mitigation strategies, including firmware updates and network segmentation, are crucial to protect against potential exploitation. Long-term, organizations should focus on comprehensive security measures to safeguard their IoT devices and networks.