From Juniper SRX SG NDM Security Technical Implementation Guide
Part of SRG-APP-000090-NDM-000222
Associated with: CCI-000171
Without the capability to restrict which roles and individuals can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system's performance by overwhelming the log. Misconfigured audits may also make it more difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.
Verify only the ISSM (or administrators or roles appointed by the ISSM) have permission to configure and control audit events. [edit] show system login class show system login View permissions for the audit-admin class (audit-admin is an example class name; local policy may dictate another name). View class assignment for all users and template users configured on the Juniper SRX. If user templates or users are other than the ISSM (or administrators or roles appointed by the ISSM) have permission to select which auditable events are to be audited, this is a finding.
Configure the Juniper SRX to allow only the ISSM user account (or administrators/roles appointed by the ISSM) to select which auditable events are to be audited. To ensure this is the case, each ISSM-appointed role on the AAA must be configured for least privilege using the following stanzas for each role. For audit-admin role: [edit] set system login class audit-admin permissions [ security trace maintenance ] set system login class audit-admin allow-commands "^clear (log|security log)" set system login class audit-admin deny-commands "^clear (security alarms|system login lockout)|^file (copy|delete|rename)|^request (security|system set-encryption-key)|^rollback|^set date|^show security (alarms|dynamic-policies|match-policies|policies)|^start shell" set system login class audit-admin security-role audit-administrator set system login user audit-officer class audit-admin For the crypto admin role: [edit] set system login class crypto-admin permissions [ admin-control configure maintenance security-control system-control trace ] set system login class crypto-admin allow-commands "^request system set-encryption-key" set system login class crypto-admin deny-commands "^clear (log|security alarms|security log|system login lockout)|^file (copy|delete|rename)|^rollback|^set date|^show security (alarms|dynamic-policies|match-policies|policies)|^start shell" set system login class crypto-admin allow-configuration-regexps "security (ike|ipsec) (policy|proposal)" "security ipsec ^vpn$ .* manual (authentication|encryption|protocol|spi)" "system fips self-test after-key-generation" set system login class crypto-admin security-role crypto-administrator For the security-admin role: [edit] set system login class security-admin permissions all set system login class security-admin deny-commands "^clear (log|security log)|^(clear|show) security alarms alarm-type idp|^request (security|system set-encryption-key)|^rollback|^start shell" set system login class security-admin deny-configuration-regexps "security alarms potential-violation idp" "security (ike|ipsec) (policy|proposal)" "security ipsec ^vpn$ .* manual (authentication| encryption|protocol|spi)" "security log cache" "security log exclude .* event-id IDP_.*" "system fips self-test after-key- generation" set system login class security-admin security-role security-administrator For the ids-admin role: [edit] set system login class ids-admin permissions [ configure maintenance security-control trace ] set system login class ids-admin allow-configuration-regexps "security alarms potential-violation idp" "security log exclude .* event-id IDP_.*" set system login class ids-admin deny-commands "^clear log|^(clear|show) security alarms (alarm-id|all|newer-than|older- than|process|severity)|^(clear|show) security alarms alarm-type (authentication|cryptographic-self-test|decryption-failures|encryption-failures| ike-phase1-failures|ike-phase2-failures|key-generation-self-test| non-cryptographic-self-test|policy|replay-attacks)|^file (copy|delete|rename)|^request (security|system set-encryption-key)|^rollback|^set date|^show security (dynamic-policies|match-policies|policies)|^start shell" set system login class ids-admin deny-configuration-regexps "security alarms potential-violation (authentication|cryptographic-self-test|decryption-failures|encryption-failures|ike-phase1-failures|ike-phase2-failures|key-generation-self-test|non-cryptographic-self-test|policy|replay-attacks)" set system login class ids-admin security-role ids-admin For the crypto-officer class: [edit] set system login user crypto-officer class crypto-admin set system login user security-officer class security-admin set system login user ids-officer class ids-admin
Lavender hyperlinks in small type off to the right (of CSS
class id, if you view the page source) point to
globally unique URIs for each document and item. Copy the
link location and paste anywhere you need to talk
unambiguously about these things.
You can obtain data about documents and items in other
formats. Simply provide an HTTP header Accept:
text/turtle or
Accept: application/rdf+xml.
Powered by sagemincer