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The guest user account should be disabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-2451 | DM1709-SQLServer9 | SV-23779r2_rule | IAAC-1 | Medium |
| Description |
|---|
| The guest user ID in a database allows access by all Windows login IDs without requiring an individual database account. This allows unauthorized access to the database. |
| STIG | Date |
|---|---|
| Microsoft SQL Server 2005 Database Security Technical Implementation Guide | 2015-06-16 |
Details
| Check Text ( C-22789r3_chk ) |
|---|
| From the query prompt: SELECT name FROM [master].sys.databases WHERE name NOT IN ('master', 'tempdb') AND state = 0 Repeat for each database: From the query prompt: USE [database name] SELECT COUNT(grantee_principal_id) FROM sys.database_permissions WHERE grantee_principal_id = 2 AND state = 'G' AND permission_name = 'CONNECT' If any value other than a 0 is returned, this is a Finding. |
| Fix Text (F-19706r1_fix) |
|---|
| Revoke connect permission from all databases except master and tempdb. From the query prompt: SELECT name FROM [master].sys.databases WHERE name NOT IN ('master', 'tempdb') AND state = 0 Repeat for each database: From the query prompt: USE [database name] REVOKE CONNECT FROM 'guest' |