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The Stream Control Transmission Protocol (SCTP) must be disabled unless required.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22511 GEN007020 SV-45968r1_rule Medium
Description
The Stream Control Transmission Protocol (SCTP) is an Internet Engineering Task Force (IETF)-standardized transport layer protocol. This protocol is not yet widely used. Binding this protocol to the network stack increases the attack surface of the host. Unprivileged local processes may be able to cause the system to dynamically load a protocol handler by opening a socket using the protocol.
STIG Date
SUSE Linux Enterprise Server v11 for System z 2016-12-20

Details

Check Text ( C-43251r1_chk )
Verify the SCTP protocol handler is prevented from dynamic loading.
# grep 'install sctp' /etc/modprobe.conf /etc/modprobe.conf.local /etc/modprobe.d/* | grep ‘/bin/true’

If no result is returned, this is a finding.
Fix Text (F-39333r1_fix)
Prevent the SCTP protocol handler for dynamic loading.
# echo "install sctp /bin/true" >> /etc/modprobe.conf.local