Description
OpenIM Server v3.8.3 contains a missing authorization vulnerability that allows any authenticated user to access admin-only management API endpoints by submitting POST requests with a regular user bearer token to /user/get_users, /user/get_all_users_uid, and /group/get_groups. Attackers can exploit the absent authverify.CheckAdmin() call in the GetPaginationUsers, GetAllUserID, and GetGroups handlers to enumerate all platform user accounts including userIDs, nicknames, and manager level flags, as well as all groups including private groups the user has never joined, exposing group names, owner IDs, and member counts.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
OpenIMSDK OpenIM Server (open-im-server)
Default version status: affected
0 to ≤ 3.8.3affected
References
- https://github.com/openimsdk/open-im-server ↗
- https://github.com/openimsdk/open-im-server/issues/3778 ↗
- https://github.com/openimsdk/open-im-server/commit/193870b2f938278b27a2d8347bd7e4db5f8f9dfc ↗
- https://github.com/openimsdk/open-im-server/pull/3781 ↗
- https://www.vulncheck.com/advisories/openim-server-missing-authorization-on-user-and-group-enumeration-endpoints ↗