CVE-2023-3584 : Exploit Details and Defense Strategies

This CVE-2023-3584, assigned by Mattermost, was published on July 17, 2023. It highlights a vulnerability in Mattermost that could allow an authenticated attacker to create a new team with a Team Override Scheme ID.

Understanding CVE-2023-3584

This section provides insights into the nature of the CVE-2023-3584 vulnerability.

What is CVE-2023-3584?

The vulnerability in Mattermost arises from a failure to properly check the authorization of POST /api/v4/teams when a team override scheme ID is included in the request. This oversight enables an authenticated attacker knowledgeable about the Team Override Scheme ID to create a new team with the specified team override scheme.

The Impact of CVE-2023-3584

The impact of this vulnerability can lead to unauthorized creation of teams within the Mattermost platform by malicious actors who possess the necessary knowledge of the Team Override Scheme ID.

Technical Details of CVE-2023-3584

This section delves deeper into the technical aspects of the CVE-2023-3584 vulnerability.

Vulnerability Description

The vulnerability is categorized under CWE-863: Incorrect Authorization. It has a CVSSv3.1 base score of 3.1, indicating a low severity level. The attack complexity is deemed high, with low privileges required for exploitation.

Affected Systems and Versions

Mattermost versions up to 7.8.4 and 7.10.2 are affected by this vulnerability, while versions 7.8.5 and 7.10.3 are unaffected.

Exploitation Mechanism

Exploiting this vulnerability requires an authenticated attacker with knowledge of a Team Override Scheme ID to execute unauthorized team creation actions.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent the exploitation of CVE-2023-3584.

Immediate Steps to Take

Users are advised to update their Mattermost Server to versions v7.8.5, v7.10.3, or higher to remediate the vulnerability and prevent unauthorized team creation.

Long-Term Security Practices

Enforcing strong authentication mechanisms and regularly updating the Mattermost Server can enhance the overall security posture and help mitigate similar vulnerabilities in the future.

Patching and Updates

Regularly monitoring security updates from Mattermost and promptly applying patches and updates is crucial to maintaining a secure environment and safeguarding against potential threats.