CVE-2023-26806 Explained : Impact and Mitigation

This CVE, assigned on March 19, 2023, involves a vulnerability in Tenda W20E router version 15.11.0.6(US_W20EV4.0br_v15.11.0.6(1068_1546_841) which can be exploited through a Buffer Overflow via the function formSetSysTime.

Understanding CVE-2023-26806

This section will provide further insight into the nature of CVE-2023-26806.

What is CVE-2023-26806?

CVE-2023-26806 is a security vulnerability found in the Tenda W20E router version 15.11.0.6(US_W20EV4.0br_v15.11.0.6(1068_1546_841) that allows attackers to execute a Buffer Overflow attack through the formSetSysTime function.

The Impact of CVE-2023-26806

This vulnerability could potentially lead to unauthorized access, remote code execution, or denial of service attacks on the affected router, compromising the security and integrity of the device and network.

Technical Details of CVE-2023-26806

In this section, we will delve into the specific technical details of CVE-2023-26806.

Vulnerability Description

The vulnerability in Tenda W20E router version 15.11.0.6(US_W20EV4.0br_v15.11.0.6(1068_1546_841) allows for a Buffer Overflow attack via the formSetSysTime function, enabling attackers to potentially manipulate the device's functionality.

Affected Systems and Versions

The vulnerability affects Tenda W20E router version 15.11.0.6(US_W20EV4.0br_v15.11.0.6(1068_1546_841), and potentially other related versions that utilize the vulnerable function.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted input to the formSetSysTime function, causing a buffer overflow and potentially gaining unauthorized access or control over the router.

Mitigation and Prevention

To address CVE-2023-26806 and enhance security measures, the following steps can be taken.

Immediate Steps to Take

Disable remote access to the affected router, if possible.
Monitor network traffic for any suspicious activity.
Implement firewall rules to restrict unauthorized access.
Stay informed about patches and updates from the vendor.

Long-Term Security Practices

Regularly update firmware and software on the router.
Conduct security audits and penetration testing to identify vulnerabilities.
Educate users on good security practices and awareness.
Implement network segmentation to minimize the impact of potential breaches.

Patching and Updates

Keep an eye on official communications from Tenda regarding patches or updates addressing CVE-2023-26806. Apply patches promptly to ensure the security of the router and prevent exploitation of the vulnerability.