Set root Ownership of BIND Directories

中等級 1自動化bind

說明

All of the directories under which ISC BIND runs should be owned by root. Of course, any files created at run time by BIND will still be owned by named, and the run time files will need to be in a directory writable by the named group. The audit lists directories under $BIND_HOME and $RUNDIR not owned by root and requires none. $BIND_HOME is taken as the existing ones of /var/named (RHEL, including a chroot), /etc/bind and /var/cache/bind (Debian/Ubuntu) and $RUNDIR as /run/named; the runtime directories (dynamic, slaves, data, run, log, tmp, /var/cache/bind) are excluded where the benchmark excludes them.

檢查方式

稽核方法: Shell 指令

shell

BH=''; for d in /var/named /etc/bind /var/cache/bind; do [ -d "$d" ] && BH="$BH $d"; done
[ -n "$BH" ] || { echo 'no BIND directory found'; exit 1; }
RUN=''; for d in /run/named /var/run/named; do [ -d "$d" ] && { RUN=$d; break; }; done
G='-group root'; U='-user root'; for a in named bind; do grep -q "^$a:" /etc/group 2>/dev/null && G="$G -o -group $a"; grep -q "^$a:" /etc/passwd 2>/dev/null && U="$U -o -user $a"; done
RT='^(/var/named(/chroot/var/named)?/(dynamic|slaves|data)|/var/named/chroot/(var/)?run/named|/var/named/chroot/var/log|/var/named/chroot/(var/)?tmp|/var/cache/bind|/run/named|/var/run/named)(/|$)'
out=$(find $BH $RUN -type d \! -user root -print 2>/dev/null) || exit 1
[ -z "$out" ] && echo compliant || { printf '%s\n' "$out" | head -n 20; echo 'directories not owned by root'; }

預期輸出: compliant

修補方式

修補方法: 操作指南或基礎設施修補檔

To correct the directory ownership, perform the following: find $BIND_HOME $RUNDIR -type d \! -user root | xargs chown root Note: it is important to remember that the run time files will need to be in a directory writable by the named group. Changing the directory ownership to root might cause permissions issues, if the group permissions are not writable.

屬性

作業系統: 不限
標籤: binddnspermissions
參考資料: CIS ISC BIND DNS Server 9.11 Benchmark v1.0.0 - 2.4 Set root Ownership of BIND Directories

檢查此主機

請在您有權稽核的機器上執行此指令。掃描為唯讀操作。

shell

tmaegis scan --target bind