CVE-2019-16662 : Vulnerability Insights and Analysis

A vulnerability was found in rConfig 3.9.2 that allows an attacker to execute system commands directly by sending a GET request to ajaxServerSettingsChk.php. This exploit is due to the lack of filtering on the rootUname parameter passed to the exec function.

Understanding CVE-2019-16662

This CVE identifies a security issue in rConfig 3.9.2 that enables unauthorized command execution.

What is CVE-2019-16662?

The vulnerability in rConfig 3.9.2 allows attackers to run system commands through a specific GET request, exploiting the lack of input filtering.

The Impact of CVE-2019-16662

The vulnerability permits attackers to execute commands directly on the system, potentially leading to unauthorized access, data theft, or system compromise.

Technical Details of CVE-2019-16662

This section provides detailed technical insights into the CVE.

Vulnerability Description

An attacker can exploit the vulnerability by sending a crafted GET request to ajaxServerSettingsChk.php, enabling the execution of system commands due to the absence of proper input filtering.

Affected Systems and Versions

Affected Version: rConfig 3.9.2
All systems running this specific version are vulnerable to this exploit.

Exploitation Mechanism

The vulnerability arises from the lack of input validation on the rootUname parameter, allowing attackers to pass malicious commands directly to the exec function.

Mitigation and Prevention

Protecting systems from CVE-2019-16662 requires immediate actions and long-term security measures.

Immediate Steps to Take

Disable or restrict access to the affected ajaxServerSettingsChk.php file.
Implement strict input validation and filtering mechanisms to prevent command injections.
Regularly monitor system logs for any suspicious activities.

Long-Term Security Practices

Conduct regular security audits and penetration testing to identify and address vulnerabilities proactively.
Keep software and systems updated with the latest security patches and fixes.

Patching and Updates

Apply patches or updates provided by rConfig promptly to mitigate the vulnerability and enhance system security.