| Dmitry Teselkin | d87f461 | 2018-08-16 11:29:55 +0300 | [diff] [blame^] | 1 | # 3.5.2 Ensure SCTP is disabled |
| 2 | # |
| 3 | # Description |
| 4 | # =========== |
| 5 | # The Stream Control Transmission Protocol (SCTP) is a transport layer |
| 6 | # protocol used to support message oriented communication, with several |
| 7 | # streams of messages in one connection. It serves a similar function as |
| 8 | # TCP and UDP, incorporating features of both. It is message-oriented |
| 9 | # like UDP, and ensures reliable in-sequence transport of messages with |
| 10 | # congestion control like TCP. |
| 11 | # |
| 12 | # Rationale |
| 13 | # ========= |
| 14 | # If the protocol is not being used, it is recommended that kernel module |
| 15 | # not be loaded, disabling the service to reduce the potential attack surface. |
| 16 | # |
| 17 | # Audit |
| 18 | # ===== |
| 19 | # Run the following commands and verify the output is as indicated: |
| 20 | # |
| 21 | # # modprobe -n -v sctp |
| 22 | # install /bin/true |
| 23 | # # lsmod | grep sctp |
| 24 | # <No output> |
| 25 | # |
| 26 | # Remediation |
| 27 | # =========== |
| 28 | # |
| 29 | # Edit or create the file /etc/modprobe.d/CIS.conf and add the following line: |
| 30 | # |
| 31 | # install sctp /bin/true |
| 32 | # |
| 33 | parameters: |
| 34 | linux: |
| 35 | system: |
| 36 | kernel: |
| 37 | module: |
| 38 | sctp: |
| 39 | install: |
| 40 | command: /bin/true |
| 41 | |