BIND DNS
TMA-BIND-2.4
Set root Ownership of BIND Directories
Descripción
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 $RUNDIR as /run/named; the runtime directories (dynamic, slaves, data, run, log, tmp, /var/cache/bind) are excluded where the benchmark excludes them.
Cómo se verifica
Método de auditoría: Comando de shell
BH=''; for d in /var/named /etc/bind /var/cache/bind; do [ -d "$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'; }- Salida esperada
compliant
Cómo se corrige
Método de corrección: Guía o parche de infraestructura
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.
Propiedades
- Sistemas operativos
- Cualquiera
- Etiquetas
- binddnspermissions
- Referencia
- CIS ISC BIND DNS Server 9.11 Benchmark v1.0.0 - 2.4 Set root Ownership of BIND Directories
Verificar este host
Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.
tmaegis scan --target bind