CVE-2022-4045 Denial of service in Mattermost

What is CVE-2022-4045?

CVE-2022-4045 is a low-severity denial of service vulnerability in Mattermost Mattermost, published on 23 Nov 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A denial-of-service vulnerability in the Mattermost allows an authenticated user to crash the server via multiple requests to one of the API endpoints which could fetch a large amount of data.

Weakness: CWE-770

Which versions are affected by CVE-2022-4045?

6 open source packages ship an affected version, including github.com/mattermost/mattermost-server. It affects 1 product.

Products include Mattermost Mattermost.

How do I fix CVE-2022-4045?

Upgrade github.com/mattermost/mattermost-server to a fixed version for your release line: 7.1.4, 7.2.1 or 7.3.1.

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-2022-4045 being exploited?

There is no known exploitation of CVE-2022-4045 in the wild and no public exploit code.

Other vulnerabilities in Mattermost Mattermost

• CVE-2019-20851 Path traversal in n/a Critical 9.1
• CVE-2024-39274 Malicious remote can add users to arbitrary teams and channels High 8.7
• CVE-2024-39777 Malicious remote can invite itself to an arbitrary local channel High 8.7
• CVE-2024-39830 Timing attack during remote cluster token comparison when shared channels are enabled High 8.1
• CVE-2023-3615 Lack of server certificate validation in websockets connection High 8.1

All Mattermost Mattermost vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-v42f-hq78-8c5m, MINI-733g-7vwv-88fc, MINI-963x-5536-xmg8, MINI-g28f-w2fj-763g, MINI-q6fv-4378-8576.