CVE-2019-20873 : Security Advisory and Response

A vulnerability has been uncovered in versions 5.9.0, 5.8.1, 5.7.3, and 4.10.8 of Mattermost Server, allowing attackers to acquire confidential data during user activation or deactivation.

Understanding CVE-2019-20873

This CVE identifies a security flaw in Mattermost Server versions that can lead to the exposure of sensitive information.

What is CVE-2019-20873?

CVE-2019-20873 is a vulnerability found in Mattermost Server versions prior to 5.9.0, 5.8.1, 5.7.3, and 4.10.8. It permits attackers to access confidential data while performing user activation or deactivation processes.

The Impact of CVE-2019-20873

The vulnerability poses a risk of unauthorized access to sensitive information, potentially compromising user data and confidentiality.

Technical Details of CVE-2019-20873

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue in Mattermost Server versions before 5.9.0, 5.8.1, 5.7.3, and 4.10.8 allows attackers to obtain sensitive information during user activation or deactivation.

Affected Systems and Versions

Mattermost Server versions 5.9.0, 5.8.1, 5.7.3, and 4.10.8

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the user activation or deactivation processes to gain access to confidential data.

Mitigation and Prevention

Protecting systems from CVE-2019-20873 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update Mattermost Server to versions 5.9.0, 5.8.1, 5.7.3, or 4.10.8 to mitigate the vulnerability.
Monitor user activation and deactivation activities for any suspicious behavior.

Long-Term Security Practices

Regularly review and update security protocols to prevent similar vulnerabilities.
Educate users on best practices for data protection and security awareness.

Patching and Updates

Stay informed about security updates and patches released by Mattermost to address vulnerabilities like CVE-2019-20873.