CVE-2022-44251 Explained : Impact and Mitigation

This article provides detailed information about CVE-2022-44251, a command injection vulnerability in TOTOLINK NR1800X V9.1.0u.6279_B20210910 that can be exploited via the ussd parameter in the setUssd function.

Understanding CVE-2022-44251

This section delves into the nature of the vulnerability and its potential impact.

What is CVE-2022-44251?

CVE-2022-44251 is a command injection vulnerability found in TOTOLINK NR1800X V9.1.0u.6279_B20210910. It arises from improper handling of user-supplied input in the setUssd function, allowing attackers to execute arbitrary commands.

The Impact of CVE-2022-44251

Exploiting this vulnerability could lead to unauthorized command execution, manipulation of device settings, and potential compromise of the affected system's security.

Technical Details of CVE-2022-44251

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability exists due to lack of proper input validation in the ussd parameter of the setUssd function, enabling attackers to inject and execute arbitrary commands on the affected device.

Affected Systems and Versions

The vulnerability affects TOTOLINK NR1800X V9.1.0u.6279_B20210910.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input containing commands and passing them through the vulnerable ussd parameter in the setUssd function to achieve unauthorized command execution.

Mitigation and Prevention

This section outlines steps to mitigate the risks associated with CVE-2022-44251.

Immediate Steps to Take

Disable remote access to the device if not required
Apply vendor-supplied patches or updates as soon as they become available

Long-Term Security Practices

Regularly update and patch device firmware
Implement network segmentation to limit the impact of potential breaches

Patching and Updates

Stay informed about security updates from the vendor and apply them promptly to address known vulnerabilities.