CVE-2019-10666 Explained : Impact and Mitigation

A vulnerability has been found in LibreNMS up to version 1.47 that allows attackers to execute PHP code through improper input validation.

Understanding CVE-2019-10666

This CVE identifies a security issue in LibreNMS versions up to 1.47 that could be exploited by attackers to execute malicious PHP code.

What is CVE-2019-10666?

LibreNMS up to version 1.47 is susceptible to a vulnerability where certain scripts dynamically include user input without proper validation, potentially allowing attackers to execute PHP code.

The Impact of CVE-2019-10666

The vulnerability could lead to unauthorized execution of PHP code by attackers who can manipulate file names and content on the server.

Technical Details of CVE-2019-10666

This section provides more technical insights into the CVE.

Vulnerability Description

The issue arises from scripts in LibreNMS that include user input without adequate validation, enabling attackers to execute PHP code from the included file.

Affected Systems and Versions

Affected software: LibreNMS up to version 1.47

Exploitation Mechanism

Attackers can exploit this vulnerability by appending additional text to file names, typically ending with .inc.php, and controlling both the file name and its content on the server.

Mitigation and Prevention

Protect your systems from CVE-2019-10666 with the following measures.

Immediate Steps to Take

Update LibreNMS to a patched version that addresses this vulnerability.
Implement strict input validation and sanitization practices in your scripts.

Long-Term Security Practices

Regularly monitor and audit your codebase for vulnerabilities.
Educate developers on secure coding practices to prevent similar issues in the future.

Patching and Updates

Stay informed about security updates for LibreNMS and promptly apply patches to mitigate risks.