2.2.27 Ensure ldap_id_use_start_tls is set for LDAP - LDAP authentication communications.

Information

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

Rationale:

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.

Solution

Configure the operating system to implement cryptography to protect the integrity of LDAP authentication sessions.
Add or modify the following line in /etc/sssd/sssd.conf:
Example: vim /etc/sssd/sssd.conf
Add, uncomment or update the following line:

ldap_id_use_start_tls = true

See Also

https://workbench.cisecurity.org/files/3636

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-17(2), CCI|CCI-001453, CSCv7|9.2, Rule-ID|SV-204581r603261_rule, STIG-ID|RHEL-07-040180

Plugin: Unix

Control ID: 26404e23bacb94b99c79cbaa1748d3d4ef3291a005b587b7edc0183304692eac