If Stream Control Transmission Protocol (SCTP) must be disabled on AIX.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-215393	AIX7-00-003088	SV-215393r508663_rule		Medium

Description
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 system to dynamically load a protocol handler by opening a socket using the protocol.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2022-06-06

Details

Check Text ( C-16591r294630_chk )

Check the system to determine if SCTP is installed: # lslpp -L bos.net.sctp Fileset Level State Type Description (Uninstaller) ---------------------------------------------------------------------------- lslpp: 0504-132 Fileset bos.net.sctp not installed. If the "bos.net.sctp" fileset is not listed, SCTP is not installed, this is not a finding. If the "bos.net.sctp" fileset is listed then SCTP is installed, this is a finding.

Fix Text (F-16589r294631_fix)
If SCTP is installed, unload it from the kernel and uninstall it from the system using the following commands: # sctpctrl unload # installp -ug bos.net.sctp