When connecting to the MQ Appliance network device using the WebGUI, it must implement replay-resistant authentication mechanisms for network access to privileged accounts.

A replay attack may enable an unauthorized user to gain access to the MQ Appliance. Authentication sessions between the authenticator and the application validating the user credentials must not be vulnerable to a replay attack. An authentication process resists replay attacks if it is impractical to achieve a successful authentication by recording and replaying a previous authentication message. Techniques used to address this include protocols using nonces (e.g., numbers generated for a specific one-time use) or challenges (e.g., TLS, WS_Security). Additional techniques include time-synchronous or challenge-response one-time authenticators.

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Log on to the MQ Appliance CLI as a privileged user. Verify the MQ Appliance PKI-based user authentication is configured to support multifactor authentication to provide replay-resistant authentication. Verify an SSL Server Profile is associated with the WebGUI (CLI). Enter: co show web-mgmt [Note the name of the ssl-server] Display the parameters of the ssl-server (CLI). Enter: co crypto ssl-server show [Note the name of the valcred] Display the certificates in the ValCred (CLI). Enter: co crypto valcred show Verify all listed client certificates are authorized to access the MQ Appliance. If any are not authorized, this is a finding.

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Log on to the MQ Appliance CLI as a privileged user. Configure MQ Appliance PKI-based user multifactor authentication to provide replay-resistant authentication. Assign the WebGUI to one management port (CLI). Enter: co web-mgmt 9090 write mem y Import to cert directory MQ Appliance private key and cert and client cert(s) (WebGUI): - Log on to the WebGUI as a privileged user. - Click on the Administration (gear) icon. - Under Main, click on File Management. - Click cert directory. - Click Actions. - Upload files. - Browse to select MQ Appl privkey. - Add. - Browse to select MQ Appl cert. - Add. - Browse to select client cert. - Add. - [Repeat Browse and Add for all desired client certs.] - Upload. - Continue. Create cert aliases (CLI). Enter: co crypto certificate cert:/// certificate cert:/// [Repeat certificate command for any additional client certs.] exit write mem y Create MQAppl private key alias (CLI). Enter: co crypto key cert:/// exit write mem y Create MQAppl ID Credential (CLI). Enter: co crypto idcred exit write mem y Create a client Validation Credential (CLI). Enter: co crypto valcred certificate [Add additional client certificates as required] exit exit write mem y Create SSL Server Profile (CLI). Enter: co crypto ssl-server admin-state enabled idcred protocols TLSv1d2 valcred request-client-auth on require-client-auth on send-client-auth-ca-list on exit exit write mem y Associate SSL Server Profile with WebGUI (CLI). Enter: co web-mgmt ssl-config-type server ssl-server exit write mem y

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SV-89621r1_rule When connecting to the MQ Appliance network device using the WebGUI, it must implement replay-resistant authentication mechanisms for network access to privileged accounts.

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