VMware Postgres must use FIPS 140-2 approved TLS ciphers.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-239207	VCPG-67-000015	SV-239207r678994_rule		High

Description
Use of weak or not validated cryptographic algorithms undermines the purposes of using encryption and digital signatures to protect data. Weak algorithms can be easily broken, and not validated cryptographic modules may not implement algorithms correctly. Unapproved cryptographic modules or algorithms should not be relied on for authentication, confidentiality or integrity. Weak cryptography could allow an attacker to gain access to and modify data stored in the database as well as the administration settings of the DBMS. Applications, including DBMSs, using cryptography are required to use approved NIST FIPS 140-2 validated cryptographic modules that meet the requirements of applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance. The security functions validated as part of FIPS 140-2 for cryptographic modules are described in FIPS 140-2 Annex A. NSA Type-X (where X=1, 2, 3, 4) products are NSA-certified, hardware-based encryption modules. Satisfies: SRG-APP-000179-DB-000114, SRG-APP-000514-DB-000381, SRG-APP-000514-DB-000382, SRG-APP-000514-DB-000383

Description

Use of weak or not validated cryptographic algorithms undermines the purposes of using encryption and digital signatures to protect data. Weak algorithms can be easily broken, and not validated cryptographic modules may not implement algorithms correctly. Unapproved cryptographic modules or algorithms should not be relied on for authentication, confidentiality or integrity. Weak cryptography could allow an attacker to gain access to and modify data stored in the database as well as the administration settings of the DBMS. Applications, including DBMSs, using cryptography are required to use approved NIST FIPS 140-2 validated cryptographic modules that meet the requirements of applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance. The security functions validated as part of FIPS 140-2 for cryptographic modules are described in FIPS 140-2 Annex A. NSA Type-X (where X=1, 2, 3, 4) products are NSA-certified, hardware-based encryption modules. Satisfies: SRG-APP-000179-DB-000114, SRG-APP-000514-DB-000381, SRG-APP-000514-DB-000382, SRG-APP-000514-DB-000383

STIG	Date
VMware vSphere 6.7 PostgreSQL Security Technical Implementation Guide	2021-03-18

Details

Check Text ( C-42440r678992_chk )
At the command prompt, execute the following command: # /opt/vmware/vpostgres/current/bin/psql -U postgres -c "SHOW ssl_ciphers;"\|sed -n 3p\|sed -e 's/^[ ]*//' Expected result: !aNULL:kECDH+AES:ECDH+AES:RSA+AES:@STRENGTH If the output does not match the expected result, this is a finding.

Fix Text (F-42399r678993_fix)
At the command prompt, execute the following commands: # /opt/vmware/vpostgres/current/bin/psql -U postgres -c "ALTER SYSTEM SET ssl_ciphers TO '!aNULL:kECDH+AES:ECDH+AES:RSA+AES:@STRENGTH';" # /opt/vmware/vpostgres/current/bin/psql -U postgres -c "SELECT pg_reload_conf();"