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78 lines
2.3 KiB
Bash
Executable File
78 lines
2.3 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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# 6.2.20 Ensure shadow group is empty (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=1
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# shellcheck disable=2034
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DESCRIPTION="There is no user in shadow group (that can read /etc/shadow file)."
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FILEGROUP='/etc/group'
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PATTERN='^shadow:x:[[:digit:]]+:'
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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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does_pattern_exist_in_file $FILEGROUP $PATTERN
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if [ "$FNRET" = 0 ]; then
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info "shadow group exists"
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RESULT=$(grep -E "$PATTERN" $FILEGROUP | cut -d: -f4)
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GROUPID=$(getent group shadow | cut -d: -f3)
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debug "$RESULT $GROUPID"
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if [ -n "$RESULT" ]; then
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crit "Some users belong to shadow group: $RESULT"
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else
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ok "No user belongs to shadow group"
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fi
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info "Checking if a user has $GROUPID as primary group"
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RESULT=$(awk -F: '($4 == shadowid) { print $1 }' shadowid=$GROUPID /etc/passwd)
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if [ -n "$RESULT" ]; then
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crit "Some users have shadow id as their primary group: $RESULT"
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else
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ok "No user has shadow id as their primary group"
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fi
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else
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crit "shadow group doesn't exist"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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info "Editing automatically users/groups may seriously harm your system, report only here"
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$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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