Finding ID | Version | Rule ID | IA Controls | Severity |
---|---|---|---|---|
V-217288 | SLES-12-030361 | SV-217288r603262_rule | Medium |
Description |
---|
Source-routed packets allow the source of the packet to suggest that 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 |
---|---|
SLES 12 Security Technical Implementation Guide | 2023-09-08 |
Check Text ( C-18516r370020_chk ) |
---|
Verify the SUSE operating system does not accept IPv6 source-routed packets. Check the value of the accept source route variable with the following command: # sudo sysctl net.ipv6.conf.all.accept_source_route net.ipv6.conf.all.accept_source_route = 0 If the returned line does not have a value of "0", this is a finding. |
Fix Text (F-18514r370021_fix) |
---|
Configure the SUSE operating system to not accept IPv6 source-routed packets by adding the following line to "/etc/sysctl.conf" (or modify the line to have the required value): net.ipv6.conf.all.accept_source_route = 0 Run the following command to apply this value: # sysctl --system |