The system must prevent local applications from generating source-routed packets.

From SOLARIS 10 X86 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECSC-1

Associated with: CCI-001551

SV-29709r1_rule The system must prevent local applications from generating source-routed packets.

Vulnerability discussion

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.

Check content

Check the system for an IPF rule blocking outgoing source-routed packets. Procedure: # 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

Edit /etc/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. Procedure: # ipf -Fa -A -f /etc/ipf/ipf.conf

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