Ensure udf kernel module is not available

チェック方法

監査方法: シェルコマンド

m=udf; found=$(find /lib/modules/$(uname -r)/kernel /usr/lib/modules/$(uname -r)/kernel -path "*/udf*" 2>/dev/null | head -n1); if [ -z "$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

期待される出力

compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

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

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

tmaegis scan --target linux --level 2