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TMA-UBUNTU2004-3.2.4

Ensure sctp kernel module is not available

NiedrigStufe 2Automatisiertlinux

Beschreibung

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.

So wird geprüft

Prüfmethode: Shell-Befehl

shell
m=sctp; found=$(find /lib/modules/$(uname -r)/kernel /usr/lib/modules/$(uname -r)/kernel -path "*/sctp*" 2>/dev/null | head -n1); if [ -z "$found" ]; then echo compliant; exit 0; fi; lsmod | awk '{print $1}' | grep -Fxq -- "${m//-/_}" && { echo "$m is loaded"; exit 0; }; cfg=$(modprobe --showconfig 2>/dev/null); printf '%s\n' "$cfg" | grep -Pq -- "^\h*blacklist\h+${m//-/_}\b" || { echo "$m is not blacklisted"; exit 0; }; printf '%s\n' "$cfg" | grep -Pq -- "^\h*install\h+${m//-/_}\h+(/usr)?/bin/(true|false)\b" || { echo "$m install is not disabled"; exit 0; }; echo compliant
Erwartete Ausgabe
compliant

So wird behoben

Behebungsmethode: Anleitung oder Infrastruktur-Patch

Run the following to unload and disable the sctp kernel module. This can also be done by running the script included below. Run the following commands to unload the sctp kernel module: # modprobe -r sctp 2>/dev/null # rmmod sctp 2>/dev/null Perform the following to disable the sctp kernel module: Create a file ending in .conf with install sctp /bin/false in the /etc/modprobe.d/ directory Example: # printf '\n%s\n' "install sctp /bin/false" >> sctp.conf Create a file ending in .conf with blacklist sctp in the /etc/modprobe.d/ directory Example: # printf '\n%s\n' "blacklist sctp" >> sctp.conf Optional remediation script: This script will perform the above remediation as required by the system …

Eigenschaften

Betriebssysteme
ubuntu-20.04
Tags
cis-convertedkernellinuxmodules
Referenz
CIS Ubuntu Linux 20.04 LTS Benchmark v3.0.0 - 3.2.4

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