CVE-2021-42877 : Vulnerability Insights and Analysis

TOTOLINK EX1200T V4.1.2cu.5215 contains a denial of service vulnerability in function RebootSystem of the file lib/cste_modules/system which can reboot the system.

Understanding CVE-2021-42877

This CVE identifies a denial of service vulnerability affecting TOTOLINK EX1200T V4.1.2cu.5215.

What is CVE-2021-42877?

The vulnerability in function RebootSystem allows unauthorized users to reboot the system, leading to a denial of service.

The Impact of CVE-2021-42877

Unauthorized users can trigger system reboots, causing disruption and denial of service.

Technical Details of CVE-2021-42877

The technical details of the vulnerability are as follows:

Vulnerability Description

The vulnerability lies in the RebootSystem function of the file lib/cste_modules/system.

Affected Systems and Versions

Product: TOTOLINK EX1200T V4.1.2cu.5215
Version: Not applicable

Exploitation Mechanism

Attackers exploit the RebootSystem function to remotely trigger system reboots.

Mitigation and Prevention

Steps to mitigate the CVE-2021-42877 vulnerability:

Immediate Steps to Take

Implement access controls to prevent unauthorized access.
Apply strict firewall rules to limit external connections.
Regularly monitor system logs for unusual activities.

Long-Term Security Practices

Conduct security assessments and penetration testing regularly.
Keep software and firmware up to date to patch known vulnerabilities.
Educate users on best security practices to prevent unauthorized access.

Patching and Updates

Check for patches or updates provided by TOTOLINK to address the vulnerability.