Quake II server before R1Q2, as used in multiple products, allows remote attackers to corrupt the servers client state data structure by exiting a session without a valid disconnect command, then reconnecting, which prevents a mod from being notified of changes in the client state. NOTE: the impact of this issue will vary depending on which mod is being used.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Quake_ii_server | Id_software | 3.20 (including) | 3.20 (including) |
| Quake_ii_server | Id_software | 3.21 (including) | 3.21 (including) |