CVE-2021-44279 : Exploit Details and Defense Strategies

Librenms 21.11.0 is affected by a Cross Site Scripting (XSS) vulnerability in includes/html/forms/poller-groups.inc.php.

Understanding CVE-2021-44279

Librenms 21.11.0 has a security vulnerability that allows for Cross Site Scripting (XSS) attacks.

What is CVE-2021-44279?

This CVE identifies a specific Cross Site Scripting vulnerability in Librenms 21.11.0, specifically in the file poller-groups.inc.php.

The Impact of CVE-2021-44279

The vulnerability can be exploited by attackers to inject malicious scripts into web pages viewed by other users, potentially leading to data theft or unauthorized actions.

Technical Details of CVE-2021-44279

CVE-2021-44279 involves the following technical details:

Vulnerability Description

Type: Cross Site Scripting (XSS)
Affected Version: Librenms 21.11.0
Vulnerable File: includes/html/forms/poller-groups.inc.php

Affected Systems and Versions

Affected Product: Librenms 21.11.0
Vendor: n/a
Version Status: Affected

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting malicious scripts through the specific file poller-groups.inc.php, leading to potential XSS attacks.

Mitigation and Prevention

It is crucial to take immediate and long-term steps to mitigate the risks associated with CVE-2021-44279:

Immediate Steps to Take

Update Librenms to a patched version that addresses the XSS vulnerability.
Implement input validation and output encoding in web applications to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor and update software for security patches.
Conduct security testing and code reviews to identify and rectify vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates from Librenms to promptly apply patches for known vulnerabilities.