CVE-2020-14460 : What You Need to Know

An issue was discovered in Mattermost Server before 5.19.0, 5.18.1, 5.17.3, 5.16.5, and 5.9.8. Creation of a trusted OAuth application does not always require admin privileges, aka MMSA-2020-0001.

Understanding CVE-2020-14460

This CVE identifies a vulnerability in Mattermost Server that could allow the creation of a trusted OAuth application without the necessary admin privileges.

What is CVE-2020-14460?

The CVE-2020-14460 vulnerability in Mattermost Server versions prior to 5.19.0, 5.18.1, 5.17.3, 5.16.5, and 5.9.8 allows unauthorized creation of trusted OAuth applications.

The Impact of CVE-2020-14460

This vulnerability could potentially lead to unauthorized access and misuse of OAuth applications, compromising the security and integrity of the affected systems.

Technical Details of CVE-2020-14460

This section provides more technical insights into the CVE.

Vulnerability Description

The issue in Mattermost Server allows the creation of trusted OAuth applications without the necessary admin privileges, potentially leading to unauthorized access.

Affected Systems and Versions

Mattermost Server versions before 5.19.0, 5.18.1, 5.17.3, 5.16.5, and 5.9.8

Exploitation Mechanism

Unauthorized users can exploit this vulnerability to create OAuth applications without requiring admin privileges, potentially gaining unauthorized access.

Mitigation and Prevention

Protect your systems from CVE-2020-14460 with the following steps:

Immediate Steps to Take

Upgrade Mattermost Server to version 5.19.0 or newer to mitigate the vulnerability.
Review and restrict OAuth application creation permissions.

Long-Term Security Practices

Regularly update and patch your systems to prevent vulnerabilities.
Implement least privilege access controls to restrict unauthorized actions.

Patching and Updates

Apply security updates promptly to ensure your systems are protected from known vulnerabilities.