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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22511	GEN007020	SV-37761r1_rule	ECSC-1	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
Red Hat Enterprise Linux 5 Security Technical Implementation Guide	2017-03-01

Details

Check Text ( C-36957r1_chk )
Verify the SCTP protocol handler is prevented from dynamic loading. # grep 'install sctp /bin/true' /etc/modprobe.conf /etc/modprobe.d/* If no result is returned, this is a finding.

Fix Text (F-32222r1_fix)
Prevent the SCTP protocol handler for dynamic loading. # echo "install sctp /bin/true" >> /etc/modprobe.conf