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If the system is using LDAP for authentication or account information, the system must verify the LDAP server's certificate has not been revoked.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22558 | GEN008040 | SV-37634r1_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 |
|---|---|
| Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2015-06-12 |
Details
| Check Text ( C-36834r1_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 the NSS LDAP client is configured to check certificates against a certificate revocation list. # grep -i '^tls_crlcheck' /etc/ldap.conf If the setting does not exist, or the value is not "all", this is a finding. |
| Fix Text (F-31672r1_fix) |
|---|
| Edit "/etc/ldap.conf" and add or set the "tls_crlcheck" setting to "all". |