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Ubuntu 24.04 LTS must use DOD PKI-established certificate authorities (CAs) for verification of the establishment of protected sessions.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-270745UBTU-24-600060SV-270745r1066724_ruleCCI-002470medium
Description
Untrusted CAs can issue certificates, but they may be issued by organizations or individuals that seek to compromise DOD systems or by organizations with insufficient security controls. If the CA used for verifying the certificate is not a DOD-approved CA, trust of this CA has not been established. The DOD will only accept PKI-certificates obtained from a DOD-approved internal or external certificate authority. Reliance on CAs for the establishment of secure sessions includes, for example, the use of SSL/TLS certificates.
STIGDate
Canonical Ubuntu 24.04 LTS Security Technical Implementation Guide2026-05-14

Related Frameworks

1 mapping across 3 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CRY-11Certificate Authorities
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (39) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-12Session Termination
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-17(2)Protection of Confidentiality and Integrity Using Encryption
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00
AC-7Unsuccessful Logon Attempts
1.00

+29 more (top 10 by confidence shown)

CCI1 mapping
CCI-002470
1.00

Details

Check Text (C-270745r1066724_chk)

Verify the directory containing the root certificates for Ubuntu 24.04 LTS contains certificate files for DOD PKI-established CAs by iterating over all files in the "/etc/ssl/certs" directory and checking if, at least one, has the subject matching "DOD ROOT CA". $ grep -ir DOD /etc/ssl/certs DOD_PKE_CA_chain.pem If no root certificate is found, this is a finding.

Fix Text (F-74679r1066723_fix)

Configure Ubuntu 24.04 LTS to use of DOD PKI-established CAs for verification of the establishment of protected sessions. Edit the "/etc/ca-certificates.conf" file, adding the character "!" to the beginning of all uncommented lines that do not start with the "!" character with the following command: $ sudo sed -i -E 's/^([^!#]+)/!\1/' /etc/ca-certificates.conf Add at least one CA to the "/usr/local/share/ca-certificates" directory in the PEM format. Update the "/etc/ssl/certs" directory with the following command: $ sudo update-ca-certificates