CVE-2022-36585 : What You Need to Know

A buffer overflow vulnerability has been identified in Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, specifically in the httpd binary's addDhcpRule function.

Understanding CVE-2022-36585

This CVE describes a buffer overflow vulnerability in Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, which can be exploited through the addDhcpRule function in the httpd binary.

What is CVE-2022-36585?

CVE-2022-36585 is a buffer overflow vulnerability found in Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE. The issue arises from a buffer overflow caused by sscanf in the addDhcpRule function within the httpd binary.

The Impact of CVE-2022-36585

This vulnerability could be exploited by an attacker to trigger a buffer overflow, potentially leading to remote code execution, denial of service, or other malicious activities on the affected system.

Technical Details of CVE-2022-36585

The technical details of CVE-2022-36585 include:

Vulnerability Description

The vulnerability stems from a buffer overflow in the addDhcpRule function within the httpd binary of Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE, caused by sscanf.

Affected Systems and Versions

The affected system for CVE-2022-36585 is Tenda G3 US_G3V3.0br_V15.11.0.6(7663)_EN_TDE. The specific affected version is not disclosed.

Exploitation Mechanism

Exploitation of this vulnerability involves crafting a malicious input to trigger the buffer overflow through the addDhcpRule function in the httpd binary.

Mitigation and Prevention

To address CVE-2022-36585, the following steps can be taken:

Immediate Steps to Take

Apply security patches or updates provided by Tenda for the affected device.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories from Tenda and apply patches or updates promptly to mitigate the risk of exploitation.