What is CVE-2022-2406?

CVE-2022-2406 is a vulnerability in Mattermost version 6.7.0 and earlier that allows an authenticated attacker to crash the server by importing large files via the Slack import REST API.

How does CVE-2022-2406 affect Mattermost?

CVE-2022-2406 affects Mattermost versions 6.7.0 and earlier.

What is the severity of CVE-2022-2406?

CVE-2022-2406 has a severity rating of medium (6.5).

How can an attacker exploit CVE-2022-2406?

An attacker can exploit CVE-2022-2406 by importing large files via the Slack import REST API in Mattermost.

Is there a fix for CVE-2022-2406?

Yes, Mattermost has released security updates to fix CVE-2022-2406. Please refer to their official website for more information.

Vulnerability/
CVE-2022-2406

medium

6.5

CWE

770 400

14/7/2022

3/8/2024

CVE-2022-2406: Malicious imports can lead to Denial of Service

First published: Thu Jul 14 2022(Updated: )

The legacy Slack import feature in Mattermost version 6.7.0 and earlier fails to properly limit the sizes of imported files, which allows an authenticated attacker to crash the server by importing large files via the Slack import REST API.

Credit: responsibledisclosure@mattermost.com

Affected Software	Affected Version	How to fix
Mattermost Mattermost	<=6.3.8
Mattermost Mattermost	>=6.4.0<=6.5.1
Mattermost Mattermost	=6.6.0
Mattermost Mattermost	=6.6.1
Mattermost Mattermost	=6.7.0

Remedy

Update Mattermost to version v7.0.0, 6.7.1, 6.6.2, 6.5.2, 6.3.9 or higher.

Never miss a vulnerability like this again

Reference Links

https://mattermost.com/security-updates/

Frequently Asked Questions

What is CVE-2022-2406?
CVE-2022-2406 is a vulnerability in Mattermost version 6.7.0 and earlier that allows an authenticated attacker to crash the server by importing large files via the Slack import REST API.
How does CVE-2022-2406 affect Mattermost?
CVE-2022-2406 affects Mattermost versions 6.7.0 and earlier.
What is the severity of CVE-2022-2406?
CVE-2022-2406 has a severity rating of medium (6.5).
How can an attacker exploit CVE-2022-2406?
An attacker can exploit CVE-2022-2406 by importing large files via the Slack import REST API in Mattermost.
Is there a fix for CVE-2022-2406?
Yes, Mattermost has released security updates to fix CVE-2022-2406. Please refer to their official website for more information.

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vendor/mattermost
canonical/mattermost mattermost
version/mattermost mattermost/6.3.8
version/mattermost mattermost/6.4.0
version/mattermost mattermost/6.5.1
version/mattermost mattermost/6.6.0
version/mattermost mattermost/6.6.1
version/mattermost mattermost/6.7.0

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