cyberstrikeus 7.5.2 Disable SCTP (Not Scored)
Profile Applicability
- Level 1
Description
The Stream Control Transmission Protocol (SCTP) is a transport layer protocol used to support message oriented communication, with several streams of messages in one connection. It serves a similar function as TCP and UDP, incorporating features of both. It is message-oriented like UDP, and ensures reliable in-sequence transport of messages with congestion control like TCP.
Rationale
If the protocol is not being used, it is recommended that kernel module not be loaded, disabling the service to reduce the potential attack surface.
Audit Procedure
Using Command Line
Perform the following to determine if SCTP is disabled.
grep "install sctp /bin/true" /etc/modprobe.d/CIS.conf
Expected Result
install sctp /bin/true
Remediation
Using Command Line
echo "install sctp /bin/true" >> /etc/modprobe.d/CIS.conf
Default Value
SCTP kernel module is available by default.
References
- CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0
Profile
Level 1 - Not Scored