CVE-2021-46408 : Security Advisory and Response

Tenda AX12 v22.03.01.21 was discovered to contain a stack buffer overflow vulnerability in the function sub_422CE4, allowing attackers to launch a Denial of Service (DoS) attack.

Understanding CVE-2021-46408

This CVE uncovers a critical vulnerability in Tenda AX12 v22.03.01.21, posing a risk of DoS attacks.

What is CVE-2021-46408?

The CVE identifies a stack buffer overflow in Tenda AX12 v22.03.01.21, enabling attackers to trigger a DoS attack using the strcpy parameter.

The Impact of CVE-2021-46408

The vulnerability may lead to a DoS condition, disrupting network services and potentially causing system unavailability.

Technical Details of CVE-2021-46408

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from a stack buffer overflow in the sub_422CE4 function within Tenda AX12 v22.03.01.21.

Affected Systems and Versions

Product: Tenda AX12
Version: v22.03.01.21

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the strcpy parameter to launch a DoS attack.

Mitigation and Prevention

To safeguard systems, specific actions must be taken.

Immediate Steps to Take

Implement firewall rules to restrict network access
Apply vendor-supplied patches promptly
Regularly monitor network traffic for unusual patterns

Long-Term Security Practices

Conduct regular security assessments and vulnerability scans
Educate users on safe cybersecurity practices
Maintain up-to-date security configurations

Patching and Updates

Stay informed about security advisories from the vendor
Install security patches and updates as soon as they are released