MariaDB must only accept end entity certificates issued by DoD PKI or DoD-approved PKI Certification Authorities (CAs) for the establishment of all encrypted sessions.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-253738	SRG-APP-000427-DB-000385	MADB-10-008500	SV-253738r961596_rule	2024-12-05	2

Description
Only DoD-approved external PKIs have been evaluated to ensure that they have security controls and identity vetting procedures in place that are sufficient for DoD systems to rely on the identity asserted in the certificate. PKIs lacking sufficient security controls and identity vetting procedures risk being compromised and issuing certificates that enable adversaries to impersonate legitimate users. The authoritative list of DoD-approved PKIs is published at https://dl.dod.cyber.mil/wp-content/uploads/pki-pke/pdf/unclass-ss_using_commercial_pki_certificates.pdf. This requirement focuses on communications protection for the MariaDB session rather than for the network packet.

Description

Only DoD-approved external PKIs have been evaluated to ensure that they have security controls and identity vetting procedures in place that are sufficient for DoD systems to rely on the identity asserted in the certificate. PKIs lacking sufficient security controls and identity vetting procedures risk being compromised and issuing certificates that enable adversaries to impersonate legitimate users. The authoritative list of DoD-approved PKIs is published at https://dl.dod.cyber.mil/wp-content/uploads/pki-pke/pdf/unclass-ss_using_commercial_pki_certificates.pdf. This requirement focuses on communications protection for the MariaDB session rather than for the network packet.

ℹ️ Check
As the database administrator, check the following variables: MariaDB> SHOW GLOBAL VARIABLES LIKE 'ssl_ca'; MariaDB> SHOW GLOBAL VARIABLES LIKE 'ssl_cert'; The Value column will show the fully qualified file name of the ssl_ca and ssl_cert respectively. The issuer can be found by running the following command: $ openssl x509 -in fully-qualified-file-name-of-ssl_ca -noout -issuer $ openssl x509 -in fully-qualified-file-name-of-ssl_cert -noout -issuer The issuer should be checked against the authoritative list of DoD-approved PKIs, which is published at https://dl.dod.cyber.mil/wp-content/uploads/pki-pke/pdf/unclass-ss_using_commercial_pki_certificates.pdf. If the DBMS will accept non-DoD approved PKI end-entity certificates, this is a finding.

ℹ️ Check

As the database administrator, check the following variables: MariaDB> SHOW GLOBAL VARIABLES LIKE 'ssl_ca'; MariaDB> SHOW GLOBAL VARIABLES LIKE 'ssl_cert'; The Value column will show the fully qualified file name of the ssl_ca and ssl_cert respectively. The issuer can be found by running the following command: $ openssl x509 -in fully-qualified-file-name-of-ssl_ca -noout -issuer $ openssl x509 -in fully-qualified-file-name-of-ssl_cert -noout -issuer The issuer should be checked against the authoritative list of DoD-approved PKIs, which is published at https://dl.dod.cyber.mil/wp-content/uploads/pki-pke/pdf/unclass-ss_using_commercial_pki_certificates.pdf. If the DBMS will accept non-DoD approved PKI end-entity certificates, this is a finding.

✔️ Fix
Revoke trust in any certificates not issued by a DoD-approved certificate authority. Configure MariaDB to accept only DoD and DoD-approved PKI end-entity certificates.