CVE-2024-29221: Invite ID available to team admins even without the "Add Members" permission
First published: Fri Apr 05 2024(Updated: )
Improper Access Control in Mattermost Server versions 9.5.x before 9.5.2, 9.4.x before 9.4.4, 9.3.x before 9.3.3, 8.1.x before 8.1.11 lacked proper access control in the `/api/v4/users/me/teams` endpoint allowing a team admin to get the invite ID of their team, thus allowing them to invite users, even if the "Add Members" permission was explicitly removed from team admins.
Credit: responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/github.com/mattermost/mattermost/server/v8 | >=9.3.0<9.3.3 | 9.3.3 |
| go/github.com/mattermost/mattermost/server/v8 | >=9.4.0<9.4.4 | 9.4.4 |
| go/github.com/mattermost/mattermost/server/v8 | >=9.5.0<9.5.2 | 9.5.2 |
| go/github.com/mattermost/mattermost/server/v8 | >=8.1.0<8.1.11 | 8.1.11 |
| Mattermost | >=8.1.0<8.1.11 | |
| Mattermost | >=9.3.0<9.3.3 | |
| Mattermost | >=9.4.0<9.4.4 | |
| Mattermost | >=9.5.0<9.5.2 |
Remedy
Update Mattermost Server to versions 9.6.0, 9.5.2, 9.4.4, 9.3.3, 8.1.11 or higher.
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Reference Links
- https://mattermost.com/security-updates
- https://nvd.nist.gov/vuln/detail/CVE-2024-29221
- https://github.com/mattermost/mattermost/commit/0dc03fbc6e3c9afb14137e72ab3fa6f5a0125b9c
- https://github.com/mattermost/mattermost/commit/5cce9fed7363386afebd81a58fb5fab7d2729c8f
- https://github.com/mattermost/mattermost/commit/a5784f34ba6592c6454b8742f24af9d06279e347
- https://github.com/mattermost/mattermost/commit/dd3fe2991a70a41790d6bef5d31afc5957525f3c
- https://github.com/advisories/GHSA-w67v-ph4x-f48q (Advisory)
- https://pkg.go.dev/vuln/GO-2024-2706
Frequently Asked Questions
What is the severity of CVE-2024-29221?
CVE-2024-29221 has been classified as a high severity vulnerability due to improper access control allowing unauthorized access to sensitive team information.
How do I fix CVE-2024-29221?
To mitigate CVE-2024-29221, upgrade Mattermost Server to versions 9.5.2, 9.4.4, 9.3.3, or 8.1.11 or later.
What versions of Mattermost are affected by CVE-2024-29221?
CVE-2024-29221 affects Mattermost Server versions 9.5.x prior to 9.5.2, 9.4.x prior to 9.4.4, 9.3.x prior to 9.3.3, and 8.1.x prior to 8.1.11.
What specific access control issue does CVE-2024-29221 involve?
CVE-2024-29221 involves improper access control at the '/api/v4/users/me/teams' endpoint, enabling a team admin to retrieve invite IDs that should be restricted.
Is there any workaround for CVE-2024-29221 if I cannot upgrade immediately?
There is no specific workaround for CVE-2024-29221, so upgrading to a fixed version is essential to ensure security.
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