IBM z/OS for PKI-based authentication must use the ESM to store keys.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223883	TSS0-ES-000100	SV-223883r695461_rule		Medium

Description
If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the network infrastructure. The cornerstone of the PKI is the private key used to encrypt or digitally sign information. If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI because the attacker can use the private key to digitally sign documents and pretend to be the authorized user. Both the holders of a digital certificate and the issuing authority must protect the computers, storage devices, or whatever they use to keep the private keys.

Description

If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the network infrastructure. The cornerstone of the PKI is the private key used to encrypt or digitally sign information. If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI because the attacker can use the private key to digitally sign documents and pretend to be the authorized user. Both the holders of a digital certificate and the issuing authority must protect the computers, storage devices, or whatever they use to keep the private keys.

STIG	Date
IBM z/OS TSS Security Technical Implementation Guide	2021-07-06

Details

Check Text ( C-25556r695264_chk )
From the ISPF Command Shell enter: OMVS enter find / -name .kdb and Find / -name .jks If any files are found, this is a finding.

Fix Text (F-25544r695265_fix)
Define all Keys/Certificates to the security database. Remove all .kdb and .jks key files.