CVE-2018-17068 : Security Advisory and Response

A vulnerability was detected in the D-Link DIR-816 A2 1.10 B05 devices, allowing command injection through shell metacharacters.

Understanding CVE-2018-17068

This CVE involves a vulnerability in the handler function of the /goform/Diagnosis route in D-Link DIR-816 A2 1.10 B05 devices.

What is CVE-2018-17068?

This CVE identifies a flaw where an HTTP request parameter is used to create a command string, potentially leading to command injection by exploiting shell metacharacters.

The Impact of CVE-2018-17068

The vulnerability could allow attackers to inject malicious commands into the system, compromising its integrity and potentially leading to unauthorized access.

Technical Details of CVE-2018-17068

The technical aspects of this CVE are as follows:

Vulnerability Description

The handler function of the /goform/Diagnosis route in D-Link DIR-816 A2 1.10 B05 devices is susceptible to command injection via shell metacharacters in the sendNum parameter.

Affected Systems and Versions

Product: D-Link DIR-816 A2 1.10 B05
Vendor: D-Link
Version: n/a

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating the sendNum parameter with shell metacharacters in an HTTP request to execute unauthorized commands.

Mitigation and Prevention

To address CVE-2018-17068, consider the following steps:

Immediate Steps to Take

Disable remote access if not required
Implement strong input validation to prevent command injection
Monitor network traffic for suspicious activities

Long-Term Security Practices

Regularly update firmware and security patches
Conduct security audits and penetration testing
Educate users on safe browsing habits and security best practices

Patching and Updates

Check for firmware updates from D-Link and apply patches promptly to mitigate the vulnerability.