CVE-2018-18319 : Exploit Details and Defense Strategies

A vulnerability has been identified in the Asuswrt-Merlin devices using the Merlin.PHP component version 0.6.6, allowing unauthorized command execution.

Understanding CVE-2018-18319

This CVE involves a vulnerability in the Merlin.PHP component version 0.6.6 used in Asuswrt-Merlin devices.

What is CVE-2018-18319?

The vulnerability in the Merlin.PHP component version 0.6.6 allows attackers to execute unauthorized commands by exploiting the eval call in api.php.

The Impact of CVE-2018-18319

Attackers can run arbitrary commands through the eval call in api.php
The exploit can be demonstrated through the URI /6/api.php?function=command&class=remote&Cc='ls'
The vendor acknowledges that Merlin.PHP is intended for use within a trusted intranet network

Technical Details of CVE-2018-18319

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability allows attackers to execute unauthorized commands by exploiting the eval call in api.php.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Version: 0.6.6

Exploitation Mechanism

Attackers exploit the eval call in api.php to run unauthorized commands.

Mitigation and Prevention

Protective measures to address CVE-2018-18319.

Immediate Steps to Take

Restrict access to the affected component
Implement network segmentation to limit exposure
Monitor and analyze network traffic for suspicious activities

Long-Term Security Practices

Regularly update and patch software components
Conduct security audits and assessments periodically
Educate users on safe computing practices

Patching and Updates

Apply patches and updates provided by the vendor to address the vulnerability.