CVE-2024-0534: Exploit Details and Defense Strategies

This CVE details a critical vulnerability found in Tenda A15 version 15.13.07.13, specifically within the Web-based Management Interface component. The vulnerability is classified as a stack-based buffer overflow (CWE-121) and can be exploited remotely.

Understanding CVE-2024-0534

This section will delve into the key aspects of CVE-2024-0534, including its nature, impact, technical details, and mitigation strategies.

What is CVE-2024-0534?

The vulnerability in Tenda A15 15.13.07.13 allows for a stack-based buffer overflow by manipulating the 'mac' argument in the /goform/SetOnlineDevName file of the Web-based Management Interface. The exploit has been publicly disclosed and poses a significant risk due to its critical severity.

The Impact of CVE-2024-0534

With a CVSS base score of 7.2 (High), this vulnerability can lead to unauthorized remote code execution, compromising the integrity, confidentiality, and availability of the affected system. Attackers could potentially exploit this flaw to gain control over the target device.

Technical Details of CVE-2024-0534

In this section, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The stack-based buffer overflow in Tenda A15 15.13.07.13 arises from improper handling of user-supplied input, specifically within the Web-based Management Interface's 'SetOnlineDevName' functionality. This flaw allows an attacker to exceed the buffer's allocated memory, leading to potential code execution.

Affected Systems and Versions

The vulnerability affects Tenda A15 version 15.13.07.13 with the Web-based Management Interface module. Systems running this specific version are at risk of exploitation unless appropriate mitigations are implemented.

Exploitation Mechanism

By sending malicious input to the 'mac' argument in the /goform/SetOnlineDevName file, threat actors can trigger the stack-based buffer overflow remotely. This could enable them to execute arbitrary code and compromise the targeted device.

Mitigation and Prevention

To address CVE-2024-0534 effectively, organizations and users should adopt the following measures to enhance their security posture and safeguard against potential exploits.

Immediate Steps to Take

Update to a patched version of the Tenda A15 firmware that addresses the stack-based buffer overflow vulnerability.
Implement network segmentation to restrict access to vulnerable components and minimize attack surface.
Monitor network traffic for any suspicious activities that could indicate an exploit attempt.

Long-Term Security Practices

Regularly update and patch software to ensure known vulnerabilities are addressed promptly.
Conduct security assessments and penetration testing to identify and remediate weaknesses proactively.
Educate users and IT staff on best practices for cybersecurity hygiene to prevent future incidents.

Patching and Updates

Stay informed about security advisories from Tenda and apply recommended patches promptly to protect against emerging threats. Regularly check for firmware updates and security bulletins to maintain a secure environment.

By following these mitigation strategies and staying vigilant against potential threats, organizations can improve their resilience against vulnerabilities like CVE-2024-0534 in Tenda A15 devices.