STIGQter: STIG Summary: Microsoft Azure SQL Managed Instance Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 23 Sep 2025:

Azure SQL Managed Instance must implement cryptographic mechanisms to prevent unauthorized modification of organization-defined information at rest on organization-defined information system components.

DISA Rule

SV-276237r1149620_rule

Vulnerability Number

V-276237

Group Title

SRG-APP-000428-DB-000386

Rule Version

MSQL-00-003300

Severity

CAT II

CCI(s)

• CCI-002475 - Implement cryptographic mechanisms to prevent unauthorized modification of organization-defined information when at rest on organization-defined system components.

Weight

10

Fix Recommendation

Use the following TSQL command to enable Transparent Database Encryption on each unencrypted database.

ALTER DATABASE
[Database Name Between Brackets] SET ENCRYPTION ON

Check Contents

Review the system documentation to determine whether the organization has defined the information at rest that is to be protected from modification, which must include, at a minimum, PII and classified information. If no information is identified as requiring such protection, this is not a finding.

Review the configuration of the Azure SQL Managed Instance to ensure data-at-rest protections are implemented. If any of the information defined as requiring cryptographic protection from modification is not encrypted in a manner that provides the required level of protection, this is a finding. Retrieve the Transparent Database Encryption status for each database using the following TSQL command:

SELECT
db.name AS DatabaseName,
db.is_encrypted AS IsEncrypted,
CASE
WHEN dm.encryption_state = 0 THEN 'No database encryption key present, no encryption'
WHEN dm.encryption_state = 1 THEN 'Unencrypted'
WHEN dm.encryption_state = 2 THEN 'Encryption in progress'
WHEN dm.encryption_state = 3 THEN 'Encrypted'
WHEN dm.encryption_state = 4 THEN 'Key change in progress'
WHEN dm.encryption_state = 5 THEN 'Decryption in progress'
WHEN dm.encryption_state = 6 THEN 'Protection change in progress'
END AS EncryptionState,
dm.encryption_state AS EncryptionState,
dm.key_algorithm AS KeyAlgorithm,
dm.key_length AS KeyLength
FROM sys.databases db
LEFT OUTER JOIN sys.dm_database_encryption_keys dm ON db.database_id = dm.database_id
WHERE db.database_id NOT IN (1,2,3,4)

If the application owner and authorizing official have determined that encryption of data at rest is required and the "EncryptionState" column returns "UNENCRYPTED", "DECRYPTION_IN_PROGRESS", or "NULL", this is a finding.

Vulnerability Number

V-276237

Documentable

False

Rule Version

MSQL-00-003300

Severity Override Guidance

Review the system documentation to determine whether the organization has defined the information at rest that is to be protected from modification, which must include, at a minimum, PII and classified information. If no information is identified as requiring such protection, this is not a finding.

Review the configuration of the Azure SQL Managed Instance to ensure data-at-rest protections are implemented. If any of the information defined as requiring cryptographic protection from modification is not encrypted in a manner that provides the required level of protection, this is a finding. Retrieve the Transparent Database Encryption status for each database using the following TSQL command:

SELECT
db.name AS DatabaseName,
db.is_encrypted AS IsEncrypted,
CASE
WHEN dm.encryption_state = 0 THEN 'No database encryption key present, no encryption'
WHEN dm.encryption_state = 1 THEN 'Unencrypted'
WHEN dm.encryption_state = 2 THEN 'Encryption in progress'
WHEN dm.encryption_state = 3 THEN 'Encrypted'
WHEN dm.encryption_state = 4 THEN 'Key change in progress'
WHEN dm.encryption_state = 5 THEN 'Decryption in progress'
WHEN dm.encryption_state = 6 THEN 'Protection change in progress'
END AS EncryptionState,
dm.encryption_state AS EncryptionState,
dm.key_algorithm AS KeyAlgorithm,
dm.key_length AS KeyLength
FROM sys.databases db
LEFT OUTER JOIN sys.dm_database_encryption_keys dm ON db.database_id = dm.database_id
WHERE db.database_id NOT IN (1,2,3,4)

If the application owner and authorizing official have determined that encryption of data at rest is required and the "EncryptionState" column returns "UNENCRYPTED", "DECRYPTION_IN_PROGRESS", or "NULL", this is a finding.

Check Content Reference

M

Target Key

5711