Details

Upon gaining access to a network device, an attacker will often first attempt to create a persistent method of reestablishing access. One way to accomplish this is to create a new account. Notification of account creation helps to mitigate this risk. Auditing account creation provides the necessary reconciliation that account management procedures are being followed. Without this audit trail, personnel without the proper authorization may gain access to critical network nodes.

Solution

Configure the ASA to log account creation using the following commands:

ASA(config)# logging enable
ASA(config)# logging buffered informational
ASA(config)# end

Supportive Information

The following resource is also helpful.

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

This security hardening control applies to the following category of controls within NIST 800-53: Access Control.This control applies to the following type of system Cisco.

References

• 800-53|AC-2(4)
• CAT|II
• CCI|CCI-000018
• Rule-ID|SV-239897r666054_rule
• STIG-ID|CASA-ND-000090
• Vuln-ID|V-239897

Source

• Tenable.com/audits