CVE-2021-37315 : What You Need to Know

A detailed overview of CVE-2021-37315, focusing on the Incorrect Access Control issue discovered in ASUS RT-AC68U router firmware.

Understanding CVE-2021-37315

This section will cover what CVE-2021-37315 entails, its impact, technical details, and mitigation steps.

What is CVE-2021-37315?

CVE-2021-37315 is an Incorrect Access Control issue found in Cloud Disk in ASUS RT-AC68U router firmware version before 3.0.0.4.386.41634. It allows remote attackers to write arbitrary files through improper sanitation on the source for COPY and MOVE operations.

The Impact of CVE-2021-37315

The vulnerability enables attackers to manipulate files remotely, posing a significant risk to the confidentiality and integrity of affected systems.

Technical Details of CVE-2021-37315

This section will delve into the specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from improper access control in the Cloud Disk functionality of ASUS RT-AC68U router firmware.

Affected Systems and Versions

The issue affects ASUS RT-AC68U routers running firmware versions prior to 3.0.0.4.386.41634.

Exploitation Mechanism

Remote attackers can exploit the vulnerability by leveraging improper source sanitation during COPY and MOVE operations, enabling them to write arbitrary files.

Mitigation and Prevention

Here we will discuss the steps to mitigate the risks associated with CVE-2021-37315.

Immediate Steps to Take

Users are advised to update their ASUS RT-AC68U router firmware to version 3.0.0.4.386.41634 or later to address the vulnerability.

Long-Term Security Practices

Implementing robust access control mechanisms, regular security audits, and network segmentation can enhance long-term security.

Patching and Updates

Regularly install firmware updates provided by ASUS to patch security vulnerabilities, ensuring the safety of your router and network.