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

From VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide

Associated with: CCI-000382

SV-99155r1_rule The Stream Control Transmission Protocol (SCTP) must be disabled unless required.

Vulnerability discussion

The Stream Control Transmission Protocol (SCTP) is an 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 kernel to dynamically load a protocol handler by opening a socket using the protocol.

Check content

Verify the SCTP protocol handler is prevented from dynamic loading: # grep "install sctp /bin/true" /etc/modprobe.conf /etc/modprobe.conf.local /etc/modprobe.d/* If no result is returned, this is a finding.

Fix text

Prevent the SCTP protocol handler from dynamic loading: # echo "install sctp /bin/true" >> /etc/modprobe.conf.local

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