CVE-2022-40105 : What You Need to Know

A buffer overflow vulnerability, CVE-2022-40105, was discovered in Tenda i9 v1.0.0.8(3828) through the formWifiMacFilterGet function, enabling attackers to trigger a Denial of Service (DoS) attack.

Understanding CVE-2022-40105

This section provides insights into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2022-40105?

CVE-2022-40105 is a buffer overflow vulnerability in Tenda i9 v1.0.0.8(3828) that allows attackers to exploit the formWifiMacFilterGet function to execute a DoS attack with a specially crafted string.

The Impact of CVE-2022-40105

This vulnerability poses a significant risk as attackers can exploit it to crash the system, leading to service disruption and potentially further exploitation of the affected device or network.

Technical Details of CVE-2022-40105

This section dives into the specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises due to insufficient input validation in the formWifiMacFilterGet function, enabling attackers to overflow the buffer with malicious data, causing a system crash.

Affected Systems and Versions

Tenda i9 v1.0.0.8(3828) is confirmed to be impacted by this vulnerability, which can be exploited by threat actors targeting this specific version.

Exploitation Mechanism

By sending a specially crafted string to the formWifiMacFilterGet function, threat actors can trigger a buffer overflow, leading to a DoS condition and system instability.

Mitigation and Prevention

Mitigation steps are crucial to safeguard systems and networks from potential attacks leveraging CVE-2022-40105.

Immediate Steps to Take

Ensure to apply security patches promptly and restrict network access to mitigate the risk of exploitation. Regular monitoring for unusual activities is recommended.

Long-Term Security Practices

Implement secure coding practices, conduct regular security assessments, and stay informed about security updates related to Tenda i9 devices to enhance overall security posture.

Patching and Updates

Stay informed about official patches released by Tenda for addressing CVE-2022-40105. Timely patch management is essential to eliminate the vulnerability and enhance system security.