Certificates in the trust store must be issued/signed by an approved CA.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-222994	SRG-APP-000427-AS-000264	TCAT-AS-001430	SV-222994r961596_rule	2025-02-11	3

Description
Use of self-signed certificates creates a lack of integrity and invalidates the certificate based authentication trust model. Certificates used by production systems must be issued/signed by a trusted Root CA and cannot be self-signed. For systems that communicate with industry partners, the DoD ECA program supports the issuance of DoD-approved certificates to industry partners. For information on the DoD ECA program, refer to the DoD PKI office. Links to their site are available on https://public.cyber.mil.

Description

Use of self-signed certificates creates a lack of integrity and invalidates the certificate based authentication trust model. Certificates used by production systems must be issued/signed by a trusted Root CA and cannot be self-signed. For systems that communicate with industry partners, the DoD ECA program supports the issuance of DoD-approved certificates to industry partners. For information on the DoD ECA program, refer to the DoD PKI office. Links to their site are available on https://public.cyber.mil.

ℹ️ Check
For the systemd Ubuntu OS, check the tomcat.service file to read the content of the JAVA_OPTS environment variable setting. sudo cat /etc/systemd/system/tomcat.service \|grep -i truststore EXAMPLE output: set JAVA_OPTS="-Djavax.net.ssl.trustStore=/path/to/truststore" "-Djavax.net.ssl.trustStorePassword=************" If the variable is not set, use the default location command below. If the variable is set, use the alternate location command below and include the path and truststore file. -Default location: keytool -list -cacerts -v \| grep -i issuer -Alternate location: keytool -list -keystore <location of trust store file> -v \|grep -i issuer If there are no CA certificates issued by a Certificate Authority (CA) that is part of the DoD PKI/PKE, this is a finding.

ℹ️ Check

For the systemd Ubuntu OS, check the tomcat.service file to read the content of the JAVA_OPTS environment variable setting. sudo cat /etc/systemd/system/tomcat.service |grep -i truststore EXAMPLE output: set JAVA_OPTS="-Djavax.net.ssl.trustStore=/path/to/truststore" "-Djavax.net.ssl.trustStorePassword=************" If the variable is not set, use the default location command below. If the variable is set, use the alternate location command below and include the path and truststore file. -Default location: keytool -list -cacerts -v | grep -i issuer -Alternate location: keytool -list -keystore <location of trust store file> -v |grep -i issuer If there are no CA certificates issued by a Certificate Authority (CA) that is part of the DoD PKI/PKE, this is a finding.

✔️ Fix
Obtain and install the DoD PKI CA certificate bundles by accessing the DoD PKI office website at https://cyber.mil/pki-pke. Download the certificate bundles and then use certificate management utilities such as keytool or openssl to import the DoD CA certificates into the trust store.