Check: UBTU-16-010150
Canonical Ubuntu STIG:
UBTU-16-010150
(in versions v1 r2 through v1 r1)
Title
The Ubuntu operating system must encrypt all stored passwords with a FIPS 140-2 approved cryptographic hashing algorithm. (Cat II impact)
Discussion
Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised. Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised. FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DoD requirements. Satisfies: SRG-OS-000073-GPOS-00041, SRG-OS-000120-GPOS-00061
Check Content
Verify that the shadow password suite configuration is set to encrypt password with a FIPS 140-2 approved cryptographic hashing algorithm. Check the hashing algorithm that is being used to hash passwords with the following command: # cat /etc/login.defs | grep -i crypt ENCRYPT_METHOD SHA512 If "ENCRYPT_METHOD" does not equal SHA512 or greater, this is a finding.
Fix Text
Configure the Ubuntu operating system to encrypt all stored passwords. Edit/Modify the following line in the "/etc/login.defs" file and set "[ENCRYPT_METHOD]" to SHA512. ENCRYPT_METHOD SHA512
Additional Identifiers
Rule ID: SV-90139r1_rule
Vulnerability ID: V-75459
Group Title:
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000196 |
The information system, for password-based authentication, stores only cryptographically-protected passwords. |
| CCI-000803 |
The information system implements mechanisms for authentication to a cryptographic module that meet the requirements of applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance for such authentication. |