CVE-2021-21258 : Security Advisory and Response

A cross-site scripting injection vulnerability in GLPI versions prior to 9.5.4 exposes users to potential attacks when utilizing ajax/kanban.php. Here's all you need to know about CVE-2021-21258.

Understanding CVE-2021-21258

This CVE refers to an XSS injection vulnerability found in GLPI, an open-source IT management software package.

What is CVE-2021-21258?

GLPI versions below 9.5.4 are susceptible to a cross-site scripting injection issue in the ajax/kanban.php module.

The Impact of CVE-2021-21258

The vulnerability allows attackers to execute malicious scripts in the context of the user's session, potentially leading to unauthorized actions.

Technical Details of CVE-2021-21258

Get insights into the specific technical aspects regarding this CVE.

Vulnerability Description

The XSS vulnerability in GLPI versions >= 9.5.0, < 9.5.4 enables attackers to inject and execute malicious scripts via the ajax/kanban.php component.

Affected Systems and Versions

GLPI versions from 9.5.0 to 9.5.4 are impacted by this security flaw.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting crafted malicious scripts through the ajax/kanban.php functionality.

Mitigation and Prevention

Find out how to handle and prevent this XSS vulnerability effectively.

Immediate Steps to Take

Users are advised to update GLPI to version 9.5.4 or newer to mitigate the XSS security risk.

Long-Term Security Practices

Implement robust security practices, such as input validation and output encoding, to prevent XSS attacks in the future.

Patching and Updates

Regularly apply security patches and updates provided by GLPI to safeguard against known vulnerabilities.