CVE-2021-37317 : Vulnerability Insights and Analysis

A detailed overview of the Directory Traversal vulnerability in Cloud Disk in ASUS RT-AC68U router firmware version before 3.0.0.4.386.41634 allowing remote attackers to write arbitrary files.

Understanding CVE-2021-37317

This section will provide insights into the severity and impact of the CVE-2021-37317 vulnerability.

What is CVE-2021-37317?

The CVE-2021-37317 is a Directory Traversal vulnerability found in the ASUS RT-AC68U router firmware version before 3.0.0.4.386.41634. It allows remote attackers to write arbitrary files by exploiting improper sanitation during COPY and MOVE operations on the target.

The Impact of CVE-2021-37317

The vulnerability poses a severe risk as it enables unauthorized users to manipulate files and potentially execute malicious activities on the affected device.

Technical Details of CVE-2021-37317

This section delves into the specific technical aspects of the CVE-2021-37317 vulnerability.

Vulnerability Description

The vulnerability arises due to improper input validation of file paths during certain file operations, leading to unauthorized read and write access.

Affected Systems and Versions

The vulnerable versions include ASUS RT-AC68U router firmware versions before 3.0.0.4.386.41634.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by sending crafted requests to the target device, enabling them to upload arbitrary files.

Mitigation and Prevention

In this section, we discuss the steps to mitigate the risks associated with CVE-2021-37317.

Immediate Steps to Take

It is crucial to update the ASUS RT-AC68U router firmware to version 3.0.0.4.386.41634 or newer to patch the vulnerability.

Long-Term Security Practices

Implement network segmentation, access controls, and regular security audits to prevent similar vulnerabilities in the future.

Patching and Updates

Regularly monitor for firmware updates and security advisories from ASUS to stay protected from potential threats.