Ubuntu operating systems handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest.
An XCCDF Rule
Description
Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive and tape drive, when used for backups) within an operating system. This requirement addresses protection of user-generated data, as well as operating system-specific configuration data. Organizations may choose to employ different mechanisms to achieve confidentiality and integrity protections, as appropriate, in accordance with the security category and/or classification of the information. Satisfies: SRG-OS-000404-GPOS-00183, SRG-OS-000405-GPOS-00184
- ID
- SV-238335r958552_rule
- Version
- UBTU-20-010414
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
To encrypt an entire partition, dedicate a partition for encryption in the partition layout.
Note: Encrypting a partition in an already-installed system is more difficult because it will need to be resized and existing partitions changed.