CVE-2018-20678 : Security Advisory and Response

LibreNMS through version 1.47 is susceptible to a SQL injection vulnerability that can be exploited by authenticated users. The vulnerability resides in the

html/ajax_table.php

file, specifically within the

sort[hostname]

parameter.

Understanding CVE-2018-20678

This CVE entry highlights a security issue in LibreNMS that allows for SQL injection attacks.

What is CVE-2018-20678?

The CVE-2018-20678 vulnerability in LibreNMS up to version 1.47 enables authenticated users to execute SQL injection attacks through the

sort[hostname]

parameter in the

html/ajax_table.php

file.

The Impact of CVE-2018-20678

The vulnerability poses a risk of unauthorized access and potential data manipulation by malicious actors who exploit the SQL injection flaw.

Technical Details of CVE-2018-20678

This section delves into the technical aspects of the CVE entry.

Vulnerability Description

The SQL injection vulnerability in LibreNMS allows authenticated users to manipulate the

sort[hostname]

parameter in the

html/ajax_table.php

file, potentially leading to unauthorized data access and modification.

Affected Systems and Versions

Product: LibreNMS
Versions affected: Up to version 1.47

Exploitation Mechanism

The vulnerability can be exploited by authenticated users when conducting a search within the application, specifically by manipulating the

sort[hostname]

parameter.

Mitigation and Prevention

Protecting systems from CVE-2018-20678 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade LibreNMS to a version beyond 1.47 to mitigate the SQL injection vulnerability.
Monitor system logs for any suspicious activities that might indicate exploitation attempts.

Long-Term Security Practices

Implement strict input validation mechanisms to prevent SQL injection attacks.
Conduct regular security audits and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Regularly apply security patches and updates provided by LibreNMS to ensure the latest security fixes are in place.