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Configure BIND to use System Crypto Policy

An XCCDF Rule

Description

Crypto Policies provide a centralized control over crypto algorithms usage of many packages. BIND is supported by crypto policy, but the BIND configuration may be set up to ignore it. To check that Crypto Policies settings are configured correctly, ensure that the /etc/named.conf includes the appropriate configuration: In the options section of /etc/named.conf, make sure that the following line is not commented out or superseded by later includes: include "/etc/crypto-policies/back-ends/bind.config";

Rationale

Overriding the system crypto policy makes the behavior of the BIND service violate expectations, and makes system configuration more fragmented.

ID
xccdf_org.ssgproject.content_rule_configure_bind_crypto_policy
Severity
High
References
Updated



Remediation - Shell Script


function remediate_bind_crypto_policy() {
	CONFIG_FILE="/etc/named.conf"
	if test -f "$CONFIG_FILE"; then
		sed -i 's|options {|&\n\tinclude "/etc/crypto-policies/back-ends/bind.config";|' "$CONFIG_FILE"
		return 0