CVE-2022-2406 Malicious imports can lead to Denial of Service
An authenticated attacker can crash the Mattermost server by importing excessively large files via the legacy Slack import feature.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-2406?
CVE-2022-2406 is a medium-severity denial of service vulnerability in Mattermost Mattermost, published on 14 Jul 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2022-2406?
It affects 1 product.
Products include Mattermost Mattermost.
How do I fix CVE-2022-2406?
No fix has been published for CVE-2022-2406 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-2406 being exploited?
There is no known exploitation of CVE-2022-2406 in the wild and no public exploit code.
Other vulnerabilities in Mattermost Mattermost
- CVE-2019-20851 Path traversal in n/a
- CVE-2024-39274 Malicious remote can add users to arbitrary teams and channels
- CVE-2024-39777 Malicious remote can invite itself to an arbitrary local channel
- CVE-2024-39830 Timing attack during remote cluster token comparison when shared channels are enabled
- CVE-2023-3615 Lack of server certificate validation in websockets connection
Sources
Also known as GHSA-fv5r-cw7f-79jm.