The Juniper SRX Services Gateway must allow only the information system security manager (ISSM) (or administrators/roles appointed by the ISSM) to select which auditable events are to be generated and forwarded to the syslog and/or local logs.

An XCCDF Rule

Description

<VulnDiscussion>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. The primary audit log permissions are set on the Syslog server, not the Juniper SRX. However, it is a best practice to also keep local logs for troubleshooting and backup. These logs are subject to access control requirements. This configuration is a two-step process. Part of the configuration must be performed on the AAA server. After a user successfully logs on, the AAA sever passes the template or role of the user to the Juniper SRX. Each AAA template or role is mapped to a login class on the Juniper SRX. On the Juniper SRX, the class name, audit-admin, is recommended as a best practice because it follows the naming convention used in NIAP testing and is self-documenting.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID: SV-229021r1015758_rule
Severity: Low
References: CCI-000015 CCI-000366 CCI-001684
Updated: 17 days ago

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

The Juniper SRX Services Gateway must allow only the information system security manager (ISSM) (or administrators/roles appointed by the ISSM) to select which auditable events are to be generated and forwarded to the syslog and/or local logs.

Description

Remediation - Manual Procedure