CVE-2022-36586 Explained : Impact and Mitigation

In Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, a buffer overflow vulnerability was identified due to strcpy function in the httpd binary.

Understanding CVE-2022-36586

This CVE involves a buffer overflow vulnerability in Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, triggered by strcpy in function 0x869f4.

What is CVE-2022-36586?

CVE-2022-36586 is a buffer overflow vulnerability in Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, where an attacker can exploit the strcpy function in the httpd binary.

The Impact of CVE-2022-36586

This vulnerability could allow a remote attacker to execute arbitrary code or crash the system, posing a significant security risk to affected systems.

Technical Details of CVE-2022-36586

Let's dive into the technical aspects of this CVE.

Vulnerability Description

The vulnerability is caused by a buffer overflow in the httpd binary's strcpy function, specifically in function 0x869f4, allowing an attacker to manipulate data and potentially execute malicious code.

Affected Systems and Versions

Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE is confirmed to be affected by this vulnerability, potentially impacting systems running this specific version.

Exploitation Mechanism

By exploiting the buffer overflow in the strcpy function of the httpd binary, threat actors can craft payloads to overwrite adjacent memory locations and gain unauthorized access.

Mitigation and Prevention

Here are some crucial steps to mitigate the risks associated with CVE-2022-36586.

Immediate Steps to Take

Disable remote access to the affected system if not essential.
Monitor network traffic for any suspicious activities.
Implement firewall rules to restrict unauthorized access.

Long-Term Security Practices

Regularly update software and firmware to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses proactively.

Patching and Updates

Consult Tenda's official security advisories and apply patches or updates provided by the vendor to address the buffer overflow vulnerability in Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE.