CVE-2024-0538: Security Advisory and Response

This article provides detailed information about CVE-2024-0538, a critical vulnerability found in Tenda W9 1.0.0.7(4456) that allows for a stack-based buffer overflow in the httpd component.

Understanding CVE-2024-0538

CVE-2024-0538 is a critical vulnerability in Tenda W9 1.0.0.7(4456) that affects the function formQosManage_auto of the httpd component. It allows for a stack-based buffer overflow through the manipulation of the argument ssidIndex, which can be exploited remotely.

What is CVE-2024-0538?

The vulnerability in Tenda W9 1.0.0.7(4456) allows attackers to trigger a stack-based buffer overflow by manipulating the ssidIndex argument within the httpd component. This critical vulnerability has been classified as CWE-121 - Stack-based Buffer Overflow.

The Impact of CVE-2024-0538

The impact of CVE-2024-0538 is significant, with a CVSSv2 base score of 9.0 and a CVSSv3 base score of 8.8 (High severity). This vulnerability can be exploited remotely, potentially leading to unauthorized access, privilege escalation, and compromise of the affected system.

Technical Details of CVE-2024-0538

This section provides more technical details about the vulnerability, including its description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in Tenda W9 1.0.0.7(4456) arises from a stack-based buffer overflow in the httpd component due to the manipulation of the ssidIndex argument, leading to potential remote code execution.

Affected Systems and Versions

The affected system is Tenda W9 version 1.0.0.7(4456) with the httpd component. Other versions may also be impacted, but 1.0.0.7(4456) is confirmed to be vulnerable.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely by manipulating the ssidIndex argument within the httpd component, triggering the stack-based buffer overflow and potentially gaining unauthorized access to the system.

Mitigation and Prevention

To safeguard systems from CVE-2024-0538, immediate steps need to be taken, and long-term security practices should be implemented to mitigate risks effectively.

Immediate Steps to Take

Update Tenda W9 to a non-vulnerable version or apply patches provided by the vendor.
Monitor network traffic for any suspicious activity related to this vulnerability.
Implement proper access control and firewall rules to limit exposure.

Long-Term Security Practices

Regularly update and patch software and firmware to address security vulnerabilities promptly.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses.
Stay informed about security advisories and subscribe to relevant mailing lists for timely updates.

Patching and Updates

Ensure that the latest patches and updates are applied to the Tenda W9 devices to mitigate the risk of exploitation associated with CVE-2024-0538. Regularly check for vendor releases and apply patches promptly to secure the affected systems.