SQL Server must employ cryptographic mechanisms preventing the unauthorized disclosure of information at rest.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-41420	SQL2-00-021400	SV-53949r6_rule		Medium

Description
This control is intended to address the confidentiality and integrity of information at rest in non-mobile devices and covers user information and system information. If the data is not encrypted, it is subject to compromise and unauthorized disclosure. Note: the system databases (master, msdb, model, resource and tempdb) cannot be encrypted. The decision whether to employ cryptography is the responsibility of the information owner/steward, who exercises discretion within the framework of applicable rules, policies and law.

Description

This control is intended to address the confidentiality and integrity of information at rest in non-mobile devices and covers user information and system information. If the data is not encrypted, it is subject to compromise and unauthorized disclosure. Note: the system databases (master, msdb, model, resource and tempdb) cannot be encrypted. The decision whether to employ cryptography is the responsibility of the information owner/steward, who exercises discretion within the framework of applicable rules, policies and law.

STIG	Date
Microsoft SQL Server 2012 Database Security Technical Implementation Guide	2017-12-01

Details

Check Text ( C-47955r7_chk )
If this is a system database (master, msdb, resource, tempdb or model), this is not applicable (NA). If the application owner and authorizing official have determined that the database does not require encryption, this is not a finding. Ensure the data is encrypted by executing: USE ; IF NOT EXISTS ( SELECT 1 FROM sys.dm_database_encryption_keys WHERE DB_NAME(database_id) = DB_NAME() ) SELECT DB_NAME() AS [Database Name], 'No database encryption key present, no encryption' AS [Encryption State] ELSE SELECT DB_NAME(database_id) AS [Database Name], CASE encryption_state WHEN 0 THEN 'No database encryption key present, no encryption' WHEN 1 THEN 'Unencrypted' WHEN 2 THEN 'Encryption in progress' WHEN 3 THEN 'Encrypted' WHEN 4 THEN 'Key change in progress' WHEN 5 THEN 'Decryption in progress' WHEN 6 THEN 'Protection change in progress' END AS [Encryption State] FROM sys.dm_database_encryption_keys WHERE DB_NAME(database_id) = DB_NAME() ; For each user database, ensure that encryption is in effect. If not, this is a finding.

Check Text ( C-47955r7_chk )

If this is a system database (master, msdb, resource, tempdb or model), this is not applicable (NA).

If the application owner and authorizing official have determined that the database does not require encryption, this is not a finding.

Ensure the data is encrypted by executing:
USE ;
IF NOT EXISTS
(
SELECT 1
FROM sys.dm_database_encryption_keys
WHERE DB_NAME(database_id) = DB_NAME()
)
SELECT
DB_NAME() AS [Database Name],
'No database encryption key present, no encryption' AS [Encryption State]
ELSE
SELECT
DB_NAME(database_id) AS [Database Name],
CASE encryption_state
WHEN 0 THEN 'No database encryption key present, no encryption'
WHEN 1 THEN 'Unencrypted'
WHEN 2 THEN 'Encryption in progress'
WHEN 3 THEN 'Encrypted'
WHEN 4 THEN 'Key change in progress'
WHEN 5 THEN 'Decryption in progress'
WHEN 6 THEN 'Protection change in progress'
END AS [Encryption State]
FROM sys.dm_database_encryption_keys
WHERE DB_NAME(database_id) = DB_NAME()
;

For each user database, ensure that encryption is in effect. If not, this is a finding.

Fix Text (F-46848r3_fix)
Use encryption to protect the data. To enable database encryption, create a master key, create a database encryption key, and protect it by using mechanisms tied to the master key, and then set encryption on.