The Cisco ASA must be configured to use FIPS-validated SHA-2 at 384 bits or higher for Internet Key Exchange (IKE) Phase 1.
An XCCDF Rule
Description
Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Although allowed by SP800-131Ar2 for some applications, SHA-1 is considered a compromised hashing standard and is being phased out of use by industry and government standards. Unless required for legacy use, DOD systems should not be configured to use SHA-2 for integrity of remote access sessions.
- ID
- SV-239958r916134_rule
- Version
- CASA-VN-000230
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Configure the ASA to use FIPS-validated SHA-2 at 384 bits or higher for IKE Phase 1 as shown in the example below.
ASA2(config)# crypto ikev2 policy 1
ASA2(config-ikev2-policy)# integrity sha384