CVE-2023-50453 : Security Advisory and Response

An issue was discovered in Zammad before 6.2.0 where it exposes internal configuration data on the login screen.

Understanding CVE-2023-50453

This CVE describes a vulnerability in Zammad before version 6.2.0 that exposes sensitive internal configuration data through a public endpoint on the login screen.

What is CVE-2023-50453?

The CVE-2023-50453 vulnerability in Zammad allows the public endpoint /api/v1/signshow to return internal configuration data of user object attributes, revealing sensitive information that should not be visible to the public.

The Impact of CVE-2023-50453

This vulnerability can lead to a potential data breach as it exposes critical internal configuration information, putting user data at risk.

Technical Details of CVE-2023-50453

This section delves into the specifics of the vulnerability.

Vulnerability Description

Zammad before 6.2.0 exposes internal configuration data, including selectable values, on the login screen's public endpoint /api/v1/signshow.

Affected Systems and Versions

The issue affects Zammad versions before 6.2.0.

Exploitation Mechanism

Attackers can exploit this vulnerability by accessing the public endpoint /api/v1/signshow to retrieve normally inaccessible internal configuration data.

Mitigation and Prevention

Protecting your system from CVE-2023-50453 is crucial to maintaining data security.

Immediate Steps to Take

Update Zammad to version 6.2.0 or later to patch the vulnerability and prevent exposure of sensitive configuration data.

Long-Term Security Practices

Implement access controls and regular security assessments to ensure sensitive data is adequately protected.

Patching and Updates

Stay informed about security updates from Zammad and promptly apply patches to protect your system from known vulnerabilities.