CVE-2025-45428

Comprehensive Technical Analysis of CVE-2025-45428

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-45428 CVSS Score: 9.8

The vulnerability in question is a stack overflow in the rebootTime parameter of the /goform/SetSysAutoRebbotCfg endpoint in Tenda ac9 v1.0 with firmware V15.03.05.14_multi. This vulnerability allows for remote arbitrary code execution, making it highly critical. The CVSS score of 9.8 indicates a severe threat due to the potential for complete system compromise.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: An attacker can send a specially crafted HTTP request to the vulnerable endpoint, causing a stack overflow.
• Network-Based Attacks: Given that the device is likely connected to a network, an attacker could exploit this vulnerability over the internet or local network.

Exploitation Methods:

• Buffer Overflow: By sending a large payload to the rebootTime parameter, an attacker can overwrite the stack and inject malicious code.
• Code Execution: The injected code can be executed with the privileges of the process handling the request, potentially leading to full system control.

3. Affected Systems and Software Versions

Affected Systems:

• Tenda ac9 v1.0

Affected Software Versions:

• Firmware V15.03.05.14_multi

4. Recommended Mitigation Strategies

Immediate Actions:

• Firmware Update: Apply the latest firmware update from Tenda that addresses this vulnerability.
• Network Segmentation: Isolate the device from public networks and restrict access to trusted devices only.
• Firewall Rules: Implement strict firewall rules to block unauthorized access to the vulnerable endpoint.

Long-Term Strategies:

• Regular Patching: Establish a routine for regularly checking and applying firmware updates.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activity targeting the vulnerable endpoint.
• Security Audits: Conduct regular security audits and vulnerability assessments on all network devices.

5. Impact on Cybersecurity Landscape

This vulnerability highlights the ongoing risk associated with IoT devices and network equipment. The potential for remote code execution underscores the need for robust security practices, including regular updates and proactive monitoring. The high CVSS score indicates a significant threat to network security, emphasizing the importance of timely mitigation and ongoing vigilance.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: /goform/SetSysAutoRebbotCfg
• Parameter: rebootTime
• Vulnerability Type: Stack Overflow
• Impact: Remote Arbitrary Code Execution

Exploitation Steps:

1. Identify Target: Locate the Tenda ac9 device on the network.
2. Craft Payload: Create a payload that exceeds the buffer size for the rebootTime parameter.
3. Send Request: Use a tool like curl or a custom script to send the malicious HTTP request to the vulnerable endpoint.
4. Execute Code: The stack overflow will allow the injected code to be executed, potentially leading to full system compromise.

Detection and Response:

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

References:

• Exploit and Third Party Advisory

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and maintain the integrity of their network infrastructure.