CVE-2025-14879

Comprehensive Technical Analysis of CVE-2025-14879

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-14879 CVSS Score: 9.8

The vulnerability identified in Tenda WH450 firmware version 1.0.0.18 involves a stack-based buffer overflow in the HTTP Request Handler component, specifically within the /goform/onSSIDChange file. This vulnerability is severe, as indicated by its high CVSS score of 9.8. The severity is due to the potential for remote exploitation, which can lead to unauthorized access, data corruption, or denial of service.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: The vulnerability can be exploited remotely, meaning an attacker does not need physical access to the device.
• Network-Based Attacks: Given that the vulnerability resides in the HTTP Request Handler, attackers can exploit it via network-based attacks, such as crafting malicious HTTP requests.

Exploitation Methods:

• Buffer Overflow: By manipulating the ssid_index argument, an attacker can cause a stack-based buffer overflow. This can lead to arbitrary code execution, allowing the attacker to gain control over the device.
• Public Exploit Availability: The exploit has been made available to the public, increasing the risk of widespread attacks.

3. Affected Systems and Software Versions

Affected Systems:

• Tenda WH450 devices running firmware version 1.0.0.18.

Software Versions:

• Specifically, the vulnerability affects the HTTP Request Handler component within the /goform/onSSIDChange file.

4. Recommended Mitigation Strategies

Immediate Actions:

• Firmware Update: Immediately update the firmware to a version that addresses this vulnerability. If an update is not available, consider disabling remote management features.
• Network Segmentation: Isolate affected devices on a separate network segment to limit potential attack vectors.
• Firewall Rules: Implement strict firewall rules to block unauthorized access to the device's management interface.

Long-Term Strategies:

• Regular Patching: Ensure that all devices are regularly updated with the latest firmware and security patches.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activity and potential exploitation attempts.
• Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues proactively.

5. Impact on Cybersecurity Landscape

The public availability of the exploit for CVE-2025-14879 poses a significant risk to organizations using Tenda WH450 devices. This vulnerability highlights the importance of timely patch management and the need for robust security measures to protect against remote exploitation. The high CVSS score underscores the critical nature of this vulnerability, which could be leveraged in large-scale attacks targeting IoT devices.

6. Technical Details for Security Professionals

Vulnerability Details:

• Component: HTTP Request Handler
• File: /goform/onSSIDChange
• Function: Unknown function handling ssid_index argument
• Vulnerability Type: Stack-based buffer overflow

Exploitation Steps:

1. Identify Target: Locate Tenda WH450 devices running the vulnerable firmware version.
2. Craft Malicious Request: Create an HTTP request with a manipulated ssid_index argument designed to trigger the buffer overflow.
3. Execute Attack: Send the crafted request to the target device, potentially leading to arbitrary code execution.

Detection and Response:

• Log Analysis: Monitor HTTP request logs for unusual patterns or repeated attempts to access the /goform/onSSIDChange endpoint.
• Behavioral Analysis: Use behavioral analysis tools to detect anomalous behavior that may indicate a successful exploitation.
• Incident Response: Have an incident response plan in place to quickly address and mitigate any detected exploitation attempts.

References:

• GitHub PoC
• VulDB Entry
• VulDB ID
• VulDB Submission
• Tenda Official Website

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and protect their networks from potential attacks.