The system must prevent local applications from generating source-routed packets.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22413 | GEN003606 | SV-29707r1_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. |
| STIG | Date |
|---|---|
| HP-UX 11.23 Security Technical Implementation Guide | 2015-12-02 |
Details
| Check Text ( C-36508r1_chk ) |
|---|
| Check the system for an IP Filter (IPF) rule blocking outgoing source-routed packets. # ipfstat -o Examine the list for rules such as: block out log quick all with opt lsrr block out log quick all with opt ssrr If the listed rules do not block both lsrr and ssrr options, this is a finding. |
| Fix Text (F-31866r1_fix) |
|---|
| Edit /etc/opt/ipf/ipf.conf and add rules to block outgoing source-routed packets, such as: block out log quick all with opt lsrr block out log quick all with opt ssrr Reload the IPF rules. # ipf -Fa -A -f /etc/opt/ipf/ipf.conf |