If the system is using LDAP for authentication or account information, the LDAP TLS connection must require the server provide a certificate with a valid trust path to a trusted CA.

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If the system is using LDAP for authentication or account information, the LDAP TLS connection must require the server provide a certificate with a valid trust path to a trusted CA.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22557	GEN008020	SV-46000r1_rule		Medium

Description
The NSS LDAP service provides user mappings which are a vital component of system security. Communication between an LDAP server and a host using LDAP for NSS require authentication.

STIG	Date
SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide	2018-09-19

Details

Check Text ( C-43283r1_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 server certificate is required and verified by the NSS LDAP configuration. # grep -i '^tls_checkpeer' /etc/ldap.conf If no line is returned, or the value is not "yes", this is a finding.

Fix Text (F-39366r1_fix)
Edit "/etc/ldap.conf" and add or set the "tls_checkpeer" setting to "yes".