The Dell OS10 Switch must use FIPS-validated Keyed-Hash Message Authentication Code (HMAC) to protect the integrity of nonlocal maintenance and diagnostic communications.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
high	V-269796	SRG-APP-000411-NDM-000330	OS10-NDM-000780	SV-269796r1051773_rule	2024-12-11	1

Description
Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DOD data may be compromised. Nonlocal maintenance and diagnostic activities are those activities conducted by individuals communicating through a network, either an external network (e.g., the internet) or an internal network. Currently, HMAC is the only FIPS-approved algorithm for generating and verifying message/data authentication codes in accordance with FIPS 198-1. Products that are FIPS 140-2 validated will have an HMAC that meets specification; however, the option must be configured for use as the only message authentication code used for authentication to cryptographic modules. Separate requirements for configuring applications and protocols used by each application (e.g., SNMPv3, SSHv2, NTP, HTTPS, and other protocols and applications that require server/client authentication) are required to implement this requirement. Where SSH is used, the SSHv2 protocol suite is required because it includes Layer 7 protocols such as SCP and SFTP, which can be used for secure file transfers.

Description

Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DOD data may be compromised. Nonlocal maintenance and diagnostic activities are those activities conducted by individuals communicating through a network, either an external network (e.g., the internet) or an internal network. Currently, HMAC is the only FIPS-approved algorithm for generating and verifying message/data authentication codes in accordance with FIPS 198-1. Products that are FIPS 140-2 validated will have an HMAC that meets specification; however, the option must be configured for use as the only message authentication code used for authentication to cryptographic modules. Separate requirements for configuring applications and protocols used by each application (e.g., SNMPv3, SSHv2, NTP, HTTPS, and other protocols and applications that require server/client authentication) are required to implement this requirement. Where SSH is used, the SSHv2 protocol suite is required because it includes Layer 7 protocols such as SCP and SFTP, which can be used for secure file transfers.

ℹ️ Check
Verify the OS10 Switch uses FIPS-validated HMAC to protect the integrity of nonlocal maintenance and diagnostic communications. Review the FIPS status to verify that FIPS mode is enabled, as shown below: OS10# show fips status FIPS mode: Enabled Crypto Library: OpenSSL 1.0.2zg-fips 7 Feb 2023 FIPS Object Module: DELL OpenSSL FIPS Crypto Module v2.6 July 2021 OS10# Verify that SSH is enabled for network access by reviewing the SSH server status: OS10# show ip ssh \| grep "SSH Server:" SSH Server: Enabled Verify that telnet is disabled on the switch by verifying that the following is not in the running-configuration: ip telnet server enable If FIPS mode is not enabled or if the SSH is not enabled or if telnet is enabled in the OS10 Switch, this is a finding.

ℹ️ Check

Verify the OS10 Switch uses FIPS-validated HMAC to protect the integrity of nonlocal maintenance and diagnostic communications. Review the FIPS status to verify that FIPS mode is enabled, as shown below: OS10# show fips status FIPS mode: Enabled Crypto Library: OpenSSL 1.0.2zg-fips 7 Feb 2023 FIPS Object Module: DELL OpenSSL FIPS Crypto Module v2.6 July 2021 OS10# Verify that SSH is enabled for network access by reviewing the SSH server status: OS10# show ip ssh | grep "SSH Server:" SSH Server: Enabled Verify that telnet is disabled on the switch by verifying that the following is not in the running-configuration: ip telnet server enable If FIPS mode is not enabled or if the SSH is not enabled or if telnet is enabled in the OS10 Switch, this is a finding.

✔️ Fix
Configure the OS10 Switch to use FIPS-validated HMAC to protect the integrity of nonlocal maintenance and diagnostic communications. OS10(config)# crypto fips enable WARNING: Upon committing this configuration, the system will regenerate SSH keys. Please consult documentation and toggle FIPS mode only if you know what you are doing! Continue? [yes/no(default)]:yes OS10(config)# Disable telnet if it has been enabled: OS10(config)# no ip telnet server enable Enable SSH if it has been disabled: OS10(config)# ip ssh server enable

✔️ Fix

Configure the OS10 Switch to use FIPS-validated HMAC to protect the integrity of nonlocal maintenance and diagnostic communications. OS10(config)# crypto fips enable WARNING: Upon committing this configuration, the system will regenerate SSH keys. Please consult documentation and toggle FIPS mode only if you know what you are doing! Continue? [yes/no(default)]:yes OS10(config)# Disable telnet if it has been enabled: OS10(config)# no ip telnet server enable Enable SSH if it has been disabled: OS10(config)# ip ssh server enable