CVE-2024-8071 System Role with edit access to permissions can elevate themselves to system admin

What is CVE-2024-8071?

CVE-2024-8071 is a medium-severity vulnerability in Mattermost Mattermost, published on 22 Aug 2024. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 and 9.8.x <= 9.8.2 fail to restrict which roles can promote a user as system admin which allows a System Role with edit access to the permissions section of system console to update their role (e.g. member) to include the `manage_system` permission, effectively becoming a System Admin.

Weakness: CWE-284

Which versions are affected by CVE-2024-8071?

12 open source packages ship an affected version, including github.com/mattermost/mattermost/server/v8, github.com/mattermost/mattermost-server and github.com/mattermost/mattermost-server/v5. It affects 1 product.

Products include Mattermost Mattermost.

How do I fix CVE-2024-8071?

Upgrade github.com/mattermost/mattermost/server/v8 to a fixed version for your release line: 9.10.1, 9.5.8, 9.8.3 or 9.9.2.

Is CVE-2024-8071 being exploited?

There is no known exploitation of CVE-2024-8071 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-5263-pm2h-m7hw, GO-2024-3094.