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V-22556

CAT II (Medium)

If the system is using LDAP for authentication or account information, certificates used to authenticate to the LDAP server must be provided from DoD PKI or a DoD-approved external PKI.

Rule ID

SV-45998r1_rule

STIG

SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Version

V1R12

CCIs

CCI-000185

Discussion

LDAP can be used to provide user authentication and account information, which are vital to system security. Communication between an LDAP server and a host using LDAP requires authentication.

Check Content

Verify the source of the LDAP certificates
Check if the system is using NSS LDAP.
# grep -v '^#' /etc/nsswitch.conf | grep ldap
If no lines are returned, this vulnerability is not applicable.

Verify with the SA that the system is connected to the GIG.
If the system part of a stand alone network which is not connected to the GIG this vulnerability is not applicable.

Verify a certificate is used for client authentication to the server.
# grep -i '^tls_cert' /etc/ldap.conf
If no line is found, this is a finding.

List the certificate issuer.
# openssl x509 -text -in <cert>
If the certificate is not issued by DoD PKI or a DoD-approved external PKI, this is a finding.

Fix Text

Edit "/etc/ldap.conf" and add or edit the 'tls_cert' setting to reference a file containing a client certificate issued by DoD PKI or a DoD-approved external PKI.