Linux distributions
TMA-RHEL10-1.1.1.8
Ensure udf kernel module is not available
설명
The udf filesystem type is the universal disk format used to implement ISO/IEC 13346 and ECMA-167 specifications. This is an open vendor filesystem type for data storage on a broad range of media. This filesystem type is necessary to support writing DVDs and newer optical disc formats.
점검 방법
감사 방식: 셸 명령
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- 예상 출력
compliant
조치 방법
조치 방식: 가이드 또는 인프라 패치
Unload and disable the udf kernel module. 1. Run the following commands to unload the udf kernel module: # modprobe -r udf 2>/dev/null # rmmod udf 2>/dev/null 2. 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 '%s\n' "" "install udf /bin/false" >> /etc/modprobe.d/60-udf.conf Create a file ending in .conf with blacklist udf in the /etc/modprobe.d/ directory Example: # printf '%s\n' "" "blacklist udf" >> /etc/modprobe.d/60-udf.conf
속성
- 운영 체제
- rhel-10
- 태그
- cis-convertedkernellinuxmodules
- 참고 자료
- CIS Red Hat Enterprise Linux 10 Benchmark v1.0.1 - 1.1.1.8
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tmaegis scan --target linux --level 2