CVE-2023-38933 : Security Advisory and Response

This article provides detailed information about CVE-2023-38933, a vulnerability found in Tenda AC6, AC7, F1203, AC5, FH1203, AC9, and FH1205 devices.

Understanding CVE-2023-38933

This section discusses what CVE-2023-38933 is, its impact, technical details, and mitigation strategies.

What is CVE-2023-38933?

CVE-2023-38933 involves a stack overflow vulnerability in Tenda devices due to the deviceId parameter in the formSetClientState function.

The Impact of CVE-2023-38933

The vulnerability can be exploited to execute arbitrary code, leading to potential unauthorized access and control over affected devices.

Technical Details of CVE-2023-38933

This section provides a deeper insight into the vulnerability, affected systems, and how it can be exploited.

Vulnerability Description

The vulnerability arises from improper handling of input, resulting in a stack overflow condition, providing an entry point for malicious actors.

Affected Systems and Versions

Tenda AC6 V2.0 V15.03.06.23, AC7 V1.0 V15.03.06.44, F1203 V2.0.1.6, AC5 V1.0 V15.03.06.28, FH1203 V2.0.1.6, AC9 V3.0 V15.03.06.42_multi, and FH1205 V2.0.0.7(775) devices are confirmed to be impacted.

Exploitation Mechanism

By manipulating the deviceId parameter in the formSetClientState function, attackers can trigger the stack overflow and potentially inject malicious code.

Mitigation and Prevention

This section outlines immediate steps and long-term strategies to address CVE-2023-38933 and protect systems.

Immediate Steps to Take

Users are advised to apply security patches released by Tenda immediately and restrict network access to vulnerable devices.

Long-Term Security Practices

Implement network segmentation, regular security assessments, and continuous monitoring to prevent future vulnerabilities.

Patching and Updates

Stay informed about security updates from Tenda and promptly apply patches to secure devices against known vulnerabilities.