CVE-2019-11537 : Vulnerability Insights and Analysis

An instance of Cross-Site Scripting (XSS) can be found in osTicket versions prior to 1.12, specifically in certain files. Exploiting this vulnerability can lead to local file inclusion.

Understanding CVE-2019-11537

This CVE identifies a Cross-Site Scripting vulnerability in osTicket versions before 1.12.

What is CVE-2019-11537?

CVE-2019-11537 is a security vulnerability in osTicket that allows for Cross-Site Scripting attacks when a manipulated .csv file is uploaded to the User Importer.

The Impact of CVE-2019-11537

Exploiting this XSS vulnerability can result in local file inclusion, potentially leading to unauthorized access to sensitive information.

Technical Details of CVE-2019-11537

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

The vulnerability exists in files /upload/file.php, /upload/scp/users.php?do=import-users, and /upload/scp/ajax.php/users/import in osTicket versions prior to 1.12.

Affected Systems and Versions

Affected Version: osTicket versions before 1.12

Exploitation Mechanism

An agent manager user uploads a manipulated .csv file to the User Importer
File contents may be displayed in an error message, leading to XSS

Mitigation and Prevention

Protect your systems from CVE-2019-11537 with these mitigation strategies.

Immediate Steps to Take

Upgrade osTicket to version 1.12 or later
Avoid uploading untrusted files to the User Importer

Long-Term Security Practices

Regularly update and patch osTicket to the latest version
Educate users on safe file handling practices

Patching and Updates

Apply patches and security updates provided by osTicket promptly