Detections
Analytics
SLES-12-030362 - The SUSE operating system must not forward Internet Protocol version 6 (IPv6) source-routed packets by default.
Information
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.Solution
Configure the SUSE operating system to disable IPv6 default source routing by running the following command as an administrator:> sudo sysctl -w net.ipv6.conf.default.accept_source_route=0
If '0' is not the system's default value, add or update the following line in '/etc/sysctl.d/99-stig.conf':
> sudo sh -c 'echo 'net.ipv6.conf.default.accept_source_route=0' >> /etc/sysctl.d/99-stig.conf'
> sudo sysctl --system
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_SLES_12_V3R4_STIG.zip
Item Details
Audit Name: DISA SLES 12 STIG v3r4
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-237620r991589_rule, STIG-ID|SLES-12-030362, Vuln-ID|V-237620
Plugin: Unix
Control ID: 823d426460136577a9eb580ca0d1aea8c9a1015975aec7c71782570c7f80d82a