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

Q: 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.

Q: How does CVE-2022-2406 affect Mattermost?

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

Q: What is the severity of CVE-2022-2406?

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

Q: 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.

Q: 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.

Published 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.

Affected Software

5 affected components

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

Remediation

Information

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

Event History

Jul 14, 2022

CVE Published

via MITRE·05:23 PM

Data Sourced

via MITRE·05:23 PM

RemedyDescriptionSeverityWeakness

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?