The operating system must implement cryptography to protect the integrity of Lightweight Directory Access Protocol (LDAP) communications.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-72231	RHEL-07-040200	SV-86855r2_rule		Medium

Description
Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Cryptographic mechanisms used for protecting the integrity of information include, for example, signed hash functions using asymmetric cryptography enabling distribution of the public key to verify the hash information while maintaining the confidentiality of the key used to generate the hash.

Description

Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Cryptographic mechanisms used for protecting the integrity of information include, for example, signed hash functions using asymmetric cryptography enabling distribution of the public key to verify the hash information while maintaining the confidentiality of the key used to generate the hash.

STIG	Date
Red Hat Enterprise Linux 7 Security Technical Implementation Guide	2017-07-08

Details

Check Text ( C-72465r1_chk )
Verify the operating system implements cryptography to protect the integrity of remote ldap access sessions. To determine if LDAP is being used for authentication, use the following command: # grep -i useldapauth /etc/sysconfig/authconfig USELDAPAUTH=yes If USELDAPAUTH=yes, then LDAP is being used. Check that the path to the X.509 certificate for peer authentication with the following command: # grep -i cacertfile /etc/pam_ldap.conf tls_cacertfile /etc/openldap/ldap-cacert.pem Verify the "tls_cacertfile" option points to a file that contains the trusted CA certificate. If this file does not exist, or the option is commented out or missing, this is a finding.

Check Text ( C-72465r1_chk )

Verify the operating system implements cryptography to protect the integrity of remote ldap access sessions.

To determine if LDAP is being used for authentication, use the following command:

# grep -i useldapauth /etc/sysconfig/authconfig
USELDAPAUTH=yes

If USELDAPAUTH=yes, then LDAP is being used.

Check that the path to the X.509 certificate for peer authentication with the following command:

# grep -i cacertfile /etc/pam_ldap.conf
tls_cacertfile /etc/openldap/ldap-cacert.pem

Verify the "tls_cacertfile" option points to a file that contains the trusted CA certificate.

If this file does not exist, or the option is commented out or missing, this is a finding.

Fix Text (F-78585r1_fix)
Configure the operating system to implement cryptography to protect the integrity of LDAP remote access sessions. Set the "tls_cacertfile" option in "/etc/pam_ldap.conf" to point to the path for the X.509 certificates used for peer authentication.