The DNS server implementation must, for password-based authentication, enforce organization-defined composition and complexity rules.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-263640	SRG-APP-000870	SRG-APP-000870-DNS-000270	SV-263640r982539_rule	2024-07-02	4

Description
Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter passwords. Enforced composition rules provide marginal security benefits while decreasing usability. However, organizations may choose to establish certain rules for password generation (e.g., minimum character length for long passwords) under certain circumstances and can enforce this requirement in IA-5(1)(h). Account recovery can occur, for example, in situations when a password is forgotten. Cryptographically protected passwords include salted one-way cryptographic hashes of passwords. The list of commonly used, compromised, or expected passwords includes passwords obtained from previous breach corpuses, dictionary words, and repetitive or sequential characters. The list includes context-specific words, such as the name of the service, username, and derivatives thereof.

Description

Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter passwords. Enforced composition rules provide marginal security benefits while decreasing usability. However, organizations may choose to establish certain rules for password generation (e.g., minimum character length for long passwords) under certain circumstances and can enforce this requirement in IA-5(1)(h). Account recovery can occur, for example, in situations when a password is forgotten. Cryptographically protected passwords include salted one-way cryptographic hashes of passwords. The list of commonly used, compromised, or expected passwords includes passwords obtained from previous breach corpuses, dictionary words, and repetitive or sequential characters. The list includes context-specific words, such as the name of the service, username, and derivatives thereof.

ℹ️ Check
Verify the DNS server implementation is configured to enforce organization-defined composition and complexity rules. If the DNS server implementation is not configured to enforce organization-defined composition and complexity rules, this is a finding.

✔️ Fix
Configure the DNS server implementation to enforce organization-defined composition and complexity rules.