If the system is using LDAP for authentication or account information, the system must use a TLS connection using FIPS 140-2 approved cryptographic algorithms.

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

Associated with: CCI-001453

SV-45996r1_rule If the system is using LDAP for authentication or account information, the system must use a TLS connection using FIPS 140-2 approved cryptographic algorithms.

Vulnerability 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 protection.

Check content

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. Check if NSS LDAP is using TLS. # grep '^ssl start_tls' /etc/ldap.conf If no lines are returned, this is a finding. Check if NSS LDAP TLS is using only FIPS 140-2 approved cryptographic algorithms. # grep '^tls_ciphers' /etc/ldap.conf If the line is not present, or contains ciphers not approved by FIPS 140-2, this is a finding.

Fix text

Edit "/etc/ldap.conf" and add a "ssl start_tls" and "tls_ciphers" options with only FIPS 140-2 approved ciphers.

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