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

From Microsoft SQL Server 2012 Database Security Technical Implementation Guide

Part of SRG-APP-000232-DB-000155

Associated with: CCI-001200

SV-53949r6_rule SQL Server must employ cryptographic mechanisms preventing the unauthorized disclosure of information at rest.

Vulnerability discussion

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.

Check content

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

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.

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