CVE-2022-41520 : What You Need to Know

A detailed overview of CVE-2022-41520 highlighting the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2022-41520

In this section, we will delve into what CVE-2022-41520 entails.

What is CVE-2022-41520?

The TOTOLINK NR1800X V9.1.0u.6279_B20210910 was found to have an authenticated stack overflow vulnerability through the File parameter in the UploadCustomModule function.

The Impact of CVE-2022-41520

The vulnerability in TOTOLINK NR1800X could allow an attacker to execute arbitrary code by exploiting the stack overflow, potentially leading to a complete system compromise.

Technical Details of CVE-2022-41520

This section will provide a deeper look into the specifics of CVE-2022-41520.

Vulnerability Description

CVE-2022-41520 involves an authenticated stack overflow vulnerability in the TOTOLINK NR1800X router, primarily triggered by the File parameter within the UploadCustomModule function.

Affected Systems and Versions

All versions of TOTOLINK NR1800X V9.1.0u.6279_B20210910 are affected by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by an authenticated attacker sending a crafted request to the affected router's UploadCustomModule function, leading to a stack overflow.

Mitigation and Prevention

In this section, we will discuss the steps to mitigate and prevent the risks associated with CVE-2022-41520.

Immediate Steps to Take

It is recommended to update the TOTOLINK NR1800X router to a secure firmware version that patches the stack overflow vulnerability. Ensure that access to the router is restricted to trusted entities.

Long-Term Security Practices

Implement network segmentation and access control lists (ACLs) to limit the exposure of the router to potential attackers. Regularly monitor for any unusual activity on the network.

Patching and Updates

Stay vigilant for security updates from TOTOLINK and promptly apply patches to address known vulnerabilities.