CVE-2019-13239 : Exploit Details and Defense Strategies

A cross-site scripting (XSS) vulnerability in GLPI versions prior to 9.4.3 allows for exploitation through the user picture feature in the inc/user.class.php file.

Understanding CVE-2019-13239

This CVE identifies a specific XSS vulnerability in GLPI software versions before 9.4.3.

What is CVE-2019-13239?

The CVE-2019-13239 vulnerability pertains to a security issue in GLPI that enables attackers to execute XSS attacks via the user picture functionality.

The Impact of CVE-2019-13239

Exploitation of this vulnerability could lead to unauthorized access, data theft, and potential compromise of the affected system's integrity.

Technical Details of CVE-2019-13239

GLPI software versions prior to 9.4.3 are susceptible to the following:

Vulnerability Description

The vulnerability exists in the inc/user.class.php file, allowing attackers to inject malicious scripts through the user picture feature.

Affected Systems and Versions

GLPI versions before 9.4.3

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading a crafted user picture containing malicious scripts, which are then executed when the image is viewed.

Mitigation and Prevention

It is crucial to take immediate action to mitigate the risks associated with CVE-2019-13239.

Immediate Steps to Take

Upgrade GLPI to version 9.4.3 or later to eliminate the vulnerability.
Avoid uploading user pictures from untrusted sources.
Regularly monitor and audit user profile pictures for any suspicious content.

Long-Term Security Practices

Implement input validation mechanisms to prevent XSS attacks.
Educate users about safe practices when uploading images or files.

Patching and Updates

Stay informed about security updates and patches released by GLPI.
Apply patches promptly to ensure the software is protected against known vulnerabilities.