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The system must not forward IPv4 source-routed packets.


Overview

Finding ID Version Rule ID IA Controls Severity
V-12002 GEN003600 SV-38259r1_rule ECSC-1 Medium
Description
Source-routed packets allow the source of the packet to suggest routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when IPv4 forwarding is enabled and the system is functioning as a router.
STIG Date
HP-UX 11.23 Security Technical Implementation Guide 2015-12-02

Details

Check Text ( C-36500r1_chk )
Determine if the system is configured to forward source-routed IP packets.
# ndd -get /dev/ip ip_forward_src_routed

If the returned value is not 0, then this feature is enabled, this is a finding.
Fix Text (F-31855r1_fix)
Disable the IP source-routed forwarding feature.
# ndd -set /dev/ip ip_forward_src_routed 0

Edit /etc/rc.config.d/nddconf and add/set:
TRANSPORT_NAME[x] = ip
NDD_NAME[x] = ip_forward_src_routed
NDD_VALUE[x] = 0