The Juniper SRX Services Gateway Firewall must configure ICMP to meet DoD requirements.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-66337	JUSX-AG-000132	SV-80827r1_rule		Medium

Description
Providing too much information in error messages risks compromising the data and security of the application and system. Organizations carefully consider the structure/content of error messages. The required information within error messages will vary based on the protocol and error condition. Information that could be exploited by adversaries includes ICMP messages that reveal the use of firewalls or access-control lists.

Description

Providing too much information in error messages risks compromising the data and security of the application and system. Organizations carefully consider the structure/content of error messages. The required information within error messages will vary based on the protocol and error condition. Information that could be exploited by adversaries includes ICMP messages that reveal the use of firewalls or access-control lists.

STIG	Date
Juniper SRX SG ALG Security Technical Implementation Guide	2018-01-03

Details

Check Text ( C-66983r1_chk )
Verify ICMP messages are configured to meet DoD requirements. [edit] show firewall family inet If ICMP messages are not configured in compliance with DoD requirements, this is a finding.

Fix Text (F-72413r1_fix)
Configure ICMP to meet DoD requirements. The following is an example which uses the filter name "protect_re" as the filter name with pre-configured address books (source-prefix-lists). [edit] set firewall family inet filter protect_re term permit-icmp from source-prefix-list ssh-addresses set firewall family inet filter protect_re term permit-icmp from source-prefix-list bgp-addresses set firewall family inet filter protect_re term permit-icmp from source-prefix-list loopback-addresses set firewall family inet filter protect_re term permit-icmp from source-prefix-list local-addresses set firewall family inet filter protect_re term permit-icmp from source-prefix-list ixiav4 set firewall family inet filter protect_re term permit-icmp from icmp-type echo-request set firewall family inet filter protect_re term permit-icmp from icmp-type echo-reply set firewall family inet filter protect_re term permit-icmp then log set firewall family inet filter protect_re term permit-icmp then syslog set firewall family inet filter protect_re term permit-icmp then accept set firewall family inet6 filter protect_re-v6 term permit-ar from icmp-type neighboradvertisement set firewall family inet6 filter protect_re-v6 term permit-ar from icmp-type neighborsolicit set firewall family inet6 filter ingress-v6 term permit-ar from icmp-type neighboradvertisement set firewall family inet6 filter ingress-v6 term permit-ar from icmp-type neighborsolicit set firewall family inet6 filter ingress-v6 term permit-ar from icmp-type 134 set firewall family inet6 filter ingress-v6 term permit-ar then accept set firewall family inet6 filter egress-v6 term permit-lr from icmp-type neighboradvertisement set firewall family inet6 filter egress-v6 term permit-lr from icmp-type neighbor-solicit set firewall family inet6 filter egress-v6 term permit-lr from icmp-type 134 set firewall family inet6 filter egress-v6 term permit-lr then accept

Fix Text (F-72413r1_fix)

Configure ICMP to meet DoD requirements. The following is an example which uses the filter name "protect_re" as the filter name with pre-configured address books (source-prefix-lists).

[edit]
set firewall family inet filter protect_re term permit-icmp from source-prefix-list ssh-addresses
set firewall family inet filter protect_re term permit-icmp from source-prefix-list bgp-addresses
set firewall family inet filter protect_re term permit-icmp from source-prefix-list loopback-addresses
set firewall family inet filter protect_re term permit-icmp from source-prefix-list local-addresses
set firewall family inet filter protect_re term permit-icmp from source-prefix-list ixiav4
set firewall family inet filter protect_re term permit-icmp from icmp-type echo-request
set firewall family inet filter protect_re term permit-icmp from icmp-type echo-reply
set firewall family inet filter protect_re term permit-icmp then log
set firewall family inet filter protect_re term permit-icmp then syslog
set firewall family inet filter protect_re term permit-icmp then accept
set firewall family inet6 filter protect_re-v6 term permit-ar from icmp-type neighboradvertisement
set firewall family inet6 filter protect_re-v6 term permit-ar from icmp-type neighborsolicit
set firewall family inet6 filter ingress-v6 term permit-ar from icmp-type neighboradvertisement
set firewall family inet6 filter ingress-v6 term permit-ar from icmp-type neighborsolicit
set firewall family inet6 filter ingress-v6 term permit-ar from icmp-type 134
set firewall family inet6 filter ingress-v6 term permit-ar then accept
set firewall family inet6 filter egress-v6 term permit-lr from icmp-type neighboradvertisement
set firewall family inet6 filter egress-v6 term permit-lr from icmp-type neighbor-solicit
set firewall family inet6 filter egress-v6 term permit-lr from icmp-type 134
set firewall family inet6 filter egress-v6 term permit-lr then accept