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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 2016-12-20

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".