Microsoft SQL Server
TMA-MSSQL2022-7.5
Ensure Databases are Encrypted with TDE
Description
Ensure user databases are encrypted using Transparent Data Encryption (TDE). Backups of databases encrypted with TDE are automatically encrypted as well. A malicious party who steals physical media like drives or backup tapes can restore or attach the database and browse its data. One solution is to encrypt sensitive data in a database and use a certificate to protect the keys that encrypt the data. This solution prevents anyone without the keys from using the data.
How it is checked
Audit method: SQL query
sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; SELECT COUNT(*) FROM sys.databases WHERE database_id > 4 AND is_encrypted <> 1;"- Expected output
0
How it is fixed
Fix method: Guidance or infrastructure patch
Implement TDE encryption on each user database with sensitive data. More info on how to do this is available here: https://learn.microsoft.com/en- us/sql/relational-databases/security/encryption/transparent-data-encryption
Properties
- Operating systems
- Any
- Tags
- encryptionmssqlsqlserver-2022
- Reference
- CIS Microsoft SQL Server 2022 Benchmark v1.3.0 - 7.5 Ensure Databases are Encrypted with TDE
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
tmaegis scan --target mssql --level 2