JUEX-NM-000340 - The Juniper EX switch must be configured to use FIPS 140-2/140-3 validated algorithms for authentication to a cryptographic module.

Information

Unapproved mechanisms used for authentication to the cryptographic module are not validated and therefore, cannot be relied upon to provide confidentiality or integrity, and DOD data may be compromised.

Network devices utilizing encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules.

FIPS 140-2/140-3 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication that meets DOD requirements. However, authentication algorithms must configure security processes to use only FIPS-validated and NIST-recommended authentication algorithms.

Use only AES Counter (CTR) cipher block chaining modes in compliance with CVE-2008-5161, plugin 70658 based on vendor guidance in KB20853. This prevents certain plaintext attacks in OpenSSH.

Solution

Enter the CLI configuration mode and enter the following commands to set the password format, the SSH algorithms, and the RNG to meet site requirements.

user@host> configure
user@host# set system login password format <sha-256|sha-512>
user@host# set system services ssh ciphers aes256-ctr
user@host# set system services ssh ciphers aes192-ctr
user@host# set system services ssh macs hmac-sha2-512
user@host# set system services ssh macs hmac-sha2-256
user@host# set system services ssh key-exchange ecdh-sha2-nistp521
user@host# set system services ssh key-exchange ecdh-sha2-nistp384
user@host# set system services ssh key-exchange ecdh-sha2-nistp256
user@host# set system rng hmac-drbg
user@host# commit

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Juniper_EX_Switches_Y24M10_STIG.zip

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-7, CAT|I, CCI|CCI-000803, Rule-ID|SV-253911r1028869_rule, STIG-ID|JUEX-NM-000340, Vuln-ID|V-253911

Plugin: Juniper

Control ID: 1e6a0661f35c495e9cb7d703e1010c1944a78d4aa1da2611412c7cc2aa8ad028