CVE-2019-20885 : What You Need to Know

A problem has been identified in versions of Mattermost Server prior to 5.8.0 where the generation of a robots.txt file is not consistently implemented.

Understanding CVE-2019-20885

An issue was discovered in Mattermost Server before 5.8.0 where it does not always generate a robots.txt file.

What is CVE-2019-20885?

CVE-2019-20885 is a vulnerability found in Mattermost Server versions before 5.8.0, affecting the consistent implementation of the robots.txt file generation.

The Impact of CVE-2019-20885

This vulnerability could potentially expose sensitive information or allow unauthorized access due to the inconsistent generation of the robots.txt file.

Technical Details of CVE-2019-20885

Vulnerability Description

The issue lies in the failure to consistently generate the robots.txt file in Mattermost Server versions prior to 5.8.0.

Affected Systems and Versions

Product: Mattermost Server
Vendor: N/A
Versions affected: All versions before 5.8.0

Exploitation Mechanism

Attackers could potentially exploit this vulnerability to gain insights into the server's directory structure or access sensitive information.

Mitigation and Prevention

Immediate Steps to Take

Upgrade Mattermost Server to version 5.8.0 or later to mitigate the vulnerability.
Regularly monitor and review the robots.txt file for any unauthorized changes.

Long-Term Security Practices

Implement regular security audits to identify and address any potential vulnerabilities.
Educate users on the importance of maintaining secure configurations and files.

Patching and Updates

Ensure timely installation of patches and updates provided by Mattermost to address security vulnerabilities.