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94 lines
2.9 KiB
Bash
Executable File
94 lines
2.9 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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# 13.13 Check User Home Directory Ownership (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="Check user home directory ownership."
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EXCEPTIONS=""
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ERRORS=0
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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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RESULT=$(awk -F: '{ print $1 ":" $3 ":" $6 }' /etc/passwd )
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for LINE in $RESULT; do
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debug "Working on $LINE"
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USER=$(awk -F: '{print $1}' <<< "$LINE")
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USERID=$(awk -F: '{print $2}' <<< "$LINE")
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DIR=$(awk -F: '{print $3}' <<< "$LINE")
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if [ "$USERID" -ge 500 ] && [ -d "$DIR" ] && [ "$USER" != "nfsnobody" ]; then
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OWNER=$(stat -L -c "%U" "$DIR")
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if [ "$OWNER" != "$USER" ]; then
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if grep -qw "$DIR:$USER:$OWNER" <<< "$EXCEPTIONS"; then
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ok "The home directory ($DIR) of user $USER is owned by $OWNER but is part of exceptions ($DIR:$USER:$OWNER)."
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else
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crit "The home directory ($DIR) of user $USER is owned by $OWNER."
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ERRORS=$((ERRORS+1))
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fi
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fi
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fi
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done
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if [ $ERRORS = 0 ]; then
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ok "All home directories have correct ownership"
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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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awk -F: '{ print $1 " " $3 " " $6 }' /etc/passwd | while read -r USER USERID DIR; do
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if [ "$USERID" -ge 500 ] && [ -d "$DIR" ] && [ "$USER" != "nfsnobody" ]; then
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OWNER=$(stat -L -c "%U" "$DIR")
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if [ "$OWNER" != "$USER" ]; then
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warn "The home directory ($DIR) of user $USER is owned by $OWNER."
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chown "$USER" "$DIR"
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fi
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fi
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done
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}
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# This function will create the config file for this check with default values
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create_config() {
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cat <<EOF
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status=audit
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# Specify here exception for which owner of user's home directory is not the user
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# "home:user:owner home2:user2:owner2"
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EXCEPTIONS=""
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EOF
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$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 "$CIS_ROOT_DIR"/lib/main.sh ]; then
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# shellcheck source=/opt/debian-cis/lib/main.sh
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. "$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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