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← Back to Red Hat Enterprise Linux 9 Security Technical Implementation Guide

V-288833

CAT I (High)

RHEL 9 must implement DoW-approved encryption in the OpenSSL package.

Rule ID

SV-288833r1268237_rule

STIG

Red Hat Enterprise Linux 9 Security Technical Implementation Guide

Version

V2R10

CCIs

CCI-001453

Discussion

Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote access (e.g., RDP) is access to DoW nonpublic information systems by an authorized user (or an information system) communicating through an external, nonorganization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless. 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 secret key used to generate the hash. The employed algorithms can be viewed in the "/etc/crypto-policies/back-ends/openssl.config" file.

Check Content

Verify the RHEL 9 OpenSSL library is configured to use only ciphers employing FIPS 140-3-approved algorithms with the following command:

$ grep -i opensslcnf.config /etc/pki/tls/openssl.cnf
.include = /etc/crypto-policies/back-ends/opensslcnf.config

If the "opensslcnf.config" is not defined in the "/etc/pki/tls/openssl.cnf" file, this is a finding.

Fix Text

Configure the RHEL 9 OpenSSL library to use the systemwide cryptographic policy.

Edit the "/etc/pki/tls/openssl.cnf" and add or modify the following line:

.include = /etc/crypto-policies/back-ends/opensslcnf.config