Finding ID | Version | Rule ID | IA Controls | Severity |
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V-67727 | AOSX-11-001195 | SV-82217r1_rule | Medium |
Description |
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A source-routed packet attempts to specify the network path the packet should take. If the system is not configured to block the incoming source-routed packets, an attacker can redirect the system's network traffic. Configuring the system to drop incoming source-routed IPv4 packets mitigates this risk. |
STIG | Date |
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Apple OS X 10.11 Security Technical Implementation Guide | 2018-01-04 |
Check Text ( C-68293r1_chk ) |
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To check if the system is configured to accept "source-routed" packets, run the following command: sysctl net.inet.ip.accept_sourceroute If the value is not "0", this is a finding. |
Fix Text (F-73841r1_fix) |
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To configure the system to not accept "source-routed" packets, add the following line to "/etc/sysctl.conf", creating the file if necessary: net.inet.ip.accept_sourceroute=0 |