The MDM server must encrypt all key data items (e.g., mobile device encryption keys, server PKI certificates, mobile device data bases) saved in memory using AES encryption (AES 128 bit encryption key length is the minimum requirement; AES 256 desired).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-36256	SRG-APP-232-MDM-234-SRV	SV-47660r1_rule		Medium

Description
If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can remove non-volatile memory and read it directly, thereby circumventing operating system controls. Encrypting the data ensures that confidentiality is protected even when the operating system is not running. AES encryption with appropriate key lengths provides assurance that the cryptography is adequate.

Description

If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can remove non-volatile memory and read it directly, thereby circumventing operating system controls. Encrypting the data ensures that confidentiality is protected even when the operating system is not running. AES encryption with appropriate key lengths provides assurance that the cryptography is adequate.

STIG	Date
Mobile Device Manager Security Requirements Guide	2013-01-24

Details

Check Text ( C-44496r1_chk )
Review MDM server documentation and configuration to verify the MDM server encrypts all data using AES encryption. If the MDM server does not encrypt data at rest, or does so only selectively, or does so using an encryption algorithm other than AES (for unclassified data), this is a finding.

Fix Text (F-40786r1_fix)
Configure the MDM server to encrypt all data on the mobile device using AES encryption.