CVE-2021-34218 : Security Advisory and Response

This CVE-2021-34218 involves directory indexing in the login portal of TOTOLINK-A702R-V1.0.0-B20161227.1023, which allows an attacker to access sensitive directories through a GET parameter.

Understanding CVE-2021-34218

This section will cover the impact, technical details, and mitigation strategies related to CVE-2021-34218.

What is CVE-2021-34218?

The vulnerability in the login portal of TOTOLINK-A702R-V1.0.0-B20161227.1023 enables unauthorized access to critical directories when exploited via a specific GET parameter.

The Impact of CVE-2021-34218

An attacker could potentially access directories like /add/, /img/, /js/, and /mobile, leading to unauthorized information disclosure and potential security breaches.

Technical Details of CVE-2021-34218

Vulnerability Description

The vulnerability allows malicious actors to manipulate a GET parameter to view and access sensitive directories within the login portal of TOTOLINK-A702R-V1.0.0-B20161227.1023.

Affected Systems and Versions

The impacted system version is TOTOLINK-A702R-V1.0.0-B20161227.1023 and potentially other similar versions with the same login portal setup.

Exploitation Mechanism

The exploit involves injecting a specific GET parameter to bypass security controls and view sensitive directories that should not be publicly accessible.

Mitigation and Prevention

Immediate Steps to Take

It is crucial to restrict public access to sensitive directories, implement proper input validation, and monitor GET parameters for any unusual activity.

Long-Term Security Practices

Regular security assessments, penetration testing, and continuous monitoring are essential to detect and address vulnerabilities promptly.

Patching and Updates

Vendor patches and updates should be applied promptly to address security weaknesses and prevent potential exploitation.