What is CVE-2023-3584?

CVE-2023-3584 is a vulnerability in Mattermost which allows an authenticated attacker to create a new team by bypassing authorization checks.

How does Mattermost fail to check the authorization in POST /api/v4/teams?

Mattermost fails to properly check the authorization in POST /api/v4/teams when passing a team override scheme ID in the request.

Which versions of Mattermost Server are affected by this vulnerability?

Mattermost Server versions 7.8.0 to 7.8.5 and 7.10.0 to 7.10.3 are affected by this vulnerability.

What is the severity of CVE-2023-3584?

The severity of CVE-2023-3584 is low, with a CVSSv3 score of 3.1.

Vulnerability/
CVE-2023-3584

low

3.1

CWE

863

17/7/2023

2/8/2024

CVE-2023-3584: Member can create team with team override scheme

Q: What does the vulnerability in Mattermost allow?

The vulnerability in Mattermost allows an authenticated attacker with knowledge of a Team Override Scheme ID to create a new team with said team override scheme.

First published: Mon Jul 17 2023(Updated: )

Mattermost fails to properly check the authorization of POST /api/v4/teams when passing a team override scheme ID in the request, allowing an authenticated attacker with knowledge of a Team Override Scheme ID to create a new team with said team override scheme.

Credit: responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com

Affected Software	Affected Version	How to fix
Mattermost Mattermost Server	>=7.8.0<7.8.5
Mattermost Mattermost Server	>=7.10.0<7.10.3

Remedy

Update Mattermost Server to versions v7.8.5, v7.10.3 or higher.

Never miss a vulnerability like this again

Reference Links

https://mattermost.com/security-updates

Frequently Asked Questions

What is CVE-2023-3584?
CVE-2023-3584 is a vulnerability in Mattermost which allows an authenticated attacker to create a new team by bypassing authorization checks.
How does Mattermost fail to check the authorization in POST /api/v4/teams?
Mattermost fails to properly check the authorization in POST /api/v4/teams when passing a team override scheme ID in the request.
What does the vulnerability in Mattermost allow?
The vulnerability in Mattermost allows an authenticated attacker with knowledge of a Team Override Scheme ID to create a new team with said team override scheme.
Which versions of Mattermost Server are affected by this vulnerability?
Mattermost Server versions 7.8.0 to 7.8.5 and 7.10.0 to 7.10.3 are affected by this vulnerability.
What is the severity of CVE-2023-3584?
The severity of CVE-2023-3584 is low, with a CVSSv3 score of 3.1.

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