OL08-00-010161 - OL 8 must prevent system daemons from using Kerberos for authentication.

Information

Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied on to provide confidentiality or integrity, and DoD data may be compromised.

OL 8 systems using encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules.

The key derivation function (KDF) in Kerberos is not FIPS compatible. Ensuring the system does not have any keytab files present prevents system daemons from using Kerberos for authentication. A keytab is a file containing pairs of Kerberos principals and encrypted keys.

FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules use authentication that meets DoD requirements. This allows for Security Levels 1, 2, 3, or 4 for use on a general-purpose computing system.

Solution

Configure OL 8 to prevent system daemons from using Kerberos for authentication.

Remove any files with the .keytab extension from the operating system.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Oracle_Linux_8_V1R2_STIG.zip

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-7, CAT|II, CCI|CCI-000803, Rule-ID|SV-248545r779201_rule, STIG-ID|OL08-00-010161, Vuln-ID|V-248545

Plugin: Unix

Control ID: 4ca4eab8e8f2950ff19504d20dc05321ccb94a38fe0e94811a91abd9cce3372e