CVE-2022-4068 : Security Advisory and Response

A vulnerability has been identified in librenms/librenms that allows a low-privilege user to perform an XSS attack in the context of an admin's account. This CVE details the impact, technical details, and mitigation steps for CVE-2022-4068.

Understanding CVE-2022-4068

This section will cover what CVE-2022-4068 is, its impact, technical details, and steps to mitigate the vulnerability.

What is CVE-2022-4068?

The vulnerability in librenms/librenms permits a low-privilege user to execute arbitrary JavaScript as an admin in an XSS attack.

The Impact of CVE-2022-4068

The impact of this CVE is rated as HIGH, with a CVSS base score of 7.6. It allows unauthorized users to execute code within an admin's account.

Technical Details of CVE-2022-4068

This section will delve into the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

A user can enable their disabled account with a valid session and execute an XSS attack due to improper username sanitization.

Affected Systems and Versions

The vulnerability affects librenms/librenms versions less than 22.10.0 with a custom type.

Exploitation Mechanism

The attacker exploits the lack of proper username sanitization to execute arbitrary JavaScript in an admin's account context.

Mitigation and Prevention

This section will outline immediate steps and long-term security practices to mitigate CVE-2022-4068.

Immediate Steps to Take

Users should update to version 22.10.0 or above, sanitize user inputs, and enforce proper session management.

Long-Term Security Practices

Developers should prioritize input validation, implement secure coding practices, and conduct regular security assessments.

Patching and Updates

Regularly monitor for security updates from librenms/librenms and promptly apply patches to prevent exploitation and secure systems.