CVE-2023-40899 : Exploit Details and Defense Strategies

A detailed article about the CVE-2023-40899 vulnerability in Tenda AC8 v4 US_AC8V4.0si_V16.03.34.06_cn router.

Understanding CVE-2023-40899

This section will cover the impact, technical details, and mitigation steps related to CVE-2023-40899.

What is CVE-2023-40899?

The CVE-2023-40899 vulnerability was discovered in the Tenda AC8 v4 US_AC8V4.0si_V16.03.34.06_cn router, allowing for a stack overflow through specific parameters.

The Impact of CVE-2023-40899

The vulnerability could be exploited by an attacker to execute arbitrary code or crash the affected router, leading to a denial of service (DoS) condition.

Technical Details of CVE-2023-40899

This section will provide in-depth technical information about the vulnerability.

Vulnerability Description

The vulnerability exists in the handling of parameters 'macFilterType' and 'deviceList' at /goform/setMacFilterCfg, resulting in a stack overflow.

Affected Systems and Versions

The Tenda AC8 v4 US_AC8V4.0si_V16.03.34.06_cn router is affected by this vulnerability.

Exploitation Mechanism

By manipulating the 'macFilterType' and 'deviceList' parameters in the specific URL path, an attacker can trigger the stack overflow.

Mitigation and Prevention

This section will guide users on how to mitigate the risks associated with CVE-2023-40899.

Immediate Steps to Take

Users are advised to update the firmware of the Tenda AC8 v4 router to the latest version provided by the vendor to patch the vulnerability.

Long-Term Security Practices

Regularly update the router firmware, implement strong network security measures, and monitor for any unusual network activity to prevent future exploits.

Patching and Updates

Stay informed about security advisories related to the Tenda AC8 v4 router and apply patches promptly to address any known vulnerabilities.