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371c23cd52
This flag can be used to prevent find-related checks to fail because one part of filesystem disappear (ie. ephemeral directories or files)
99 lines
3.4 KiB
Bash
Executable File
99 lines
3.4 KiB
Bash
Executable File
#!/bin/bash
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# run-shellcheck
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#
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# CIS Debian Hardening
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#
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#
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# 6.1.12 Ensure no ungrouped files or directories exist (Scored)
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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# shellcheck disable=2034
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HARDENING_LEVEL=2
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# shellcheck disable=2034
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DESCRIPTION="Ensure no ungrouped files or directories exist"
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GROUP='root'
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EXCLUDED=''
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# find emits following error if directory or file disappear during
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# tree traversal: find: ‘/tmp/xxx’: No such file or directory
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FIND_IGNORE_NOSUCHFILE_ERR=false
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# This function will be called if the script status is on enabled / audit mode
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audit() {
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info "Checking if there are ungrouped files"
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if [ -n "$EXCLUDED" ]; then
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# maybe EXCLUDED allow us to filter out some FS
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FS_NAMES=$(df --local -P | awk '{if (NR!=1) print $6}' | grep -vE "$EXCLUDED")
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[ "${FIND_IGNORE_NOSUCHFILE_ERR}" = true ] && set +e
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# shellcheck disable=SC2086
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RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -nogroup -regextype 'egrep' ! -regex $EXCLUDED -print 2>/dev/null)
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[ "${FIND_IGNORE_NOSUCHFILE_ERR}" = true ] && set -e
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else
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FS_NAMES=$(df --local -P | awk '{if (NR!=1) print $6}')
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[ "${FIND_IGNORE_NOSUCHFILE_ERR}" = true ] && set +e
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# shellcheck disable=SC2086
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RESULT=$($SUDO_CMD find $FS_NAMES -xdev -ignore_readdir_race -nogroup -print 2>/dev/null)
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[ "${FIND_IGNORE_NOSUCHFILE_ERR}" = true ] && set -e
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fi
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if [ -n "$RESULT" ]; then
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crit "Some ungrouped files are present"
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# shellcheck disable=SC2001
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FORMATTED_RESULT=$(sed "s/ /\n/g" <<<"$RESULT" | sort | uniq | tr '\n' ' ')
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crit "$FORMATTED_RESULT"
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else
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ok "No ungrouped files found"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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if [ -n "$EXCLUDED" ]; then
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# shellcheck disable=SC2086
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RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | grep -vE "$EXCLUDED" | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -nogroup -regextype 'egrep' ! -regex "$EXCLUDED" -ls 2>/dev/null)
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else
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RESULT=$(df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -nogroup -ls 2>/dev/null)
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fi
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if [ -n "$RESULT" ]; then
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warn "Applying chgrp on all ungrouped files in the system"
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df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -ignore_readdir_race -nogroup -print 2>/dev/null | xargs chgrp "$GROUP"
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else
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ok "No ungrouped files found, nothing to apply"
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fi
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}
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# This function will check config parameters required
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check_config() {
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# No param for this function
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_ROOT_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_ROOT_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "$CIS_ROOT_DIR"/lib/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "$CIS_ROOT_DIR"/lib/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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