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.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22556	GEN008000	SV-26942r1_rule	DCNR-1	Medium

Description
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.

STIG	Date
UNIX SRG	2013-03-26

Details

Check Text ( C-27890r1_chk )
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 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. # open_ssl x509 -text -in If the certificate is not issued by DoD PKI or a DoD-approved external PKI, this is a finding.

Check Text ( C-27890r1_chk )

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 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.
# open_ssl x509 -text -in
If the certificate is not issued by DoD PKI or a DoD-approved external PKI, this is a finding.

Fix Text (F-24204r1_fix)
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.