CVE-2020-26028 : Security Advisory and Response

An issue was discovered in Zammad before 3.4.1. Admin Users without a ticket.* permission can access Tickets.

Understanding CVE-2020-26028

This CVE identifies a vulnerability in Zammad that allows Admin Users without proper permissions to access Tickets.

What is CVE-2020-26028?

CVE-2020-26028 is a security vulnerability found in Zammad versions prior to 3.4.1, enabling unauthorized access to Tickets by Admin Users lacking the necessary permissions.

The Impact of CVE-2020-26028

The vulnerability could lead to unauthorized access to sensitive ticket information, potentially compromising the confidentiality of user data and system integrity.

Technical Details of CVE-2020-26028

This section provides technical insights into the vulnerability.

Vulnerability Description

The issue in Zammad before 3.4.1 allows Admin Users with insufficient permissions to access Tickets, posing a security risk.

Affected Systems and Versions

Product: Zammad
Vendor: N/A
Versions affected: All versions before 3.4.1

Exploitation Mechanism

Unauthorized Admin Users can exploit this vulnerability to access Tickets without the required permissions, potentially breaching confidentiality.

Mitigation and Prevention

Protect your systems from CVE-2020-26028 with the following measures:

Immediate Steps to Take

Update Zammad to version 3.4.1 or newer to mitigate the vulnerability.
Review and adjust user permissions to ensure proper access controls.

Long-Term Security Practices

Regularly review and update user permissions to align with the principle of least privilege.
Conduct security training for Admin Users to raise awareness of access control best practices.

Patching and Updates

Stay informed about security advisories and promptly apply patches and updates to address known vulnerabilities in Zammad.