CVE-2023-48294 : Exploit Details and Defense Strategies
Learn about CVE-2023-48294 affecting LibreNMS, allowing unauthorized users to access sensitive network information. Find mitigation steps and how to prevent exploitation.
LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. The CVE-2023-48294 highlights a 'Broken Access Control' vulnerability on the Graphs Feature in LibreNMS.
Understanding CVE-2023-48294
This section will provide insights into the vulnerability, its impact, technical details, and mitigation steps.
What is CVE-2023-48294?
The vulnerability in LibreNMS allows low privilege users to access sensitive information by exploiting the 'graph.php' feature. By sending requests to this endpoint, unauthorized actors can enumerate devices and view admin user registrations.
The Impact of CVE-2023-48294
The impact of this vulnerability can lead to exposure of sensitive information, compromising the confidentiality of network data. It affects LibreNMS versions prior to 23.11.0, putting network security at risk.
Technical Details of CVE-2023-48294
Understanding the vulnerability in-depth is crucial to implement effective mitigation strategies.
Vulnerability Description
A low privilege user can exploit 'graph.php' to access device graphs and gather information on all registered devices, breaching access control mechanisms within LibreNMS.
Affected Systems and Versions
LibreNMS versions older than 23.11.0 are vulnerable to this exploit, allowing unauthorized users to view sensitive network information.
Exploitation Mechanism
By manipulating requests to 'graph.php,' malicious actors can access device data, potentially compromising network security and exposing confidential information.
Mitigation and Prevention
Protecting systems from CVE-2023-48294 requires immediate actions and long-term security measures.
Immediate Steps to Take
Users are strongly advised to upgrade LibreNMS to version 23.11.0 or newer to patch the vulnerability. Regularly monitor access controls and user privileges to prevent unauthorized data access.
Long-Term Security Practices
Implement strict access controls, conduct regular security audits, and educate users on safe data handling practices to enhance network security.
Patching and Updates
Frequent updates and patch management are essential to address security vulnerabilities promptly and ensure the integrity of network monitoring systems.