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The system must prevent local applications from generating source-routed packets.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-67749 | AOSX-11-001215 | SV-82239r1_rule | Medium |
| Description |
|---|
| A source-routed packet attempts to specify the network path that the system should take. If the system is not configured to block the sending of source-routed packets, an attacker can redirect the system's network traffic. |
| STIG | Date |
|---|---|
| Apple OS X 10.11 Security Technical Implementation Guide | 2017-04-06 |
Details
| Check Text ( C-68315r1_chk ) |
|---|
| To check if the system is configured to forward "source-routed" packets, run the following command: sysctl net.inet.ip.sourceroute If the value is not set to "0", this is a finding. |
| Fix Text (F-73863r1_fix) |
|---|
| To configure the system to not forward "source-routed" packets, add the following line to "/etc/sysctl.conf", creating the file if necessary: net.inet.ip.sourceroute=0 |