13.12_users_valid_homedir.sh 13.11_find_passwd_group_inconsistencies.sh 13.13_check_user_homedir_ownership.sh

bin/hardening/13.11_find_passwd_group_inconsistencies.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+
+#
+# CIS Debian 7 Hardening
+# Authors : Thibault Dewailly, OVH <thibault.dewailly@corp.ovh.com>
+#
+
+#
+# 13.11 Check Groups in /etc/passwd (Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+ERRORS=0
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+
+    for GROUP in $(cut -s -d: -f4 /etc/passwd | sort -u ); do
+        debug "Working on group $GROUP"
+        if ! grep -q -P "^.*?:[^:]*:$GROUP:" /etc/group; then
+            crit "Group $GROUP is referenced by /etc/passwd but does not exist in /etc/group"
+            ERRORS=$(($ERRORS+1))
+        fi
+    done
+
+    if [ $ERRORS = 0 ]; then
+        ok "passwd and group Groups are consistent"
+    fi 
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    for GROUP in $(cut -s -d: -f4 /etc/passwd | sort -u ); do
+        debug "Working on group $GROUP"
+        if ! grep -q -P "^.*?:[^:]*:$GROUP:" /etc/group; then
+            crit "Group $GROUP is referenced by /etc/passwd but does not exist in /etc/group"
+            ERRORS=$(($ERRORS+1))
+        fi
+    done
+
+    if [ $ERRORS != 0 ]; then
+        warn "Consider creating missing group"
+    fi
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ ! -r /etc/default/cis-hardenning ]; then
+    echo "There is no /etc/default/cis-hardenning FILE, cannot source CIS_ROOT_DIR variable, aborting"
+    exit 128
+else
+    . /etc/default/cis-hardenning
+    if [ -z $CIS_ROOT_DIR ]; then
+        echo "No CIS_ROOT_DIR variable, aborting"
+    fi
+fi 
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+[ -r $CIS_ROOT_DIR/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh

bin/hardening/13.12_users_valid_homedir.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+#
+# CIS Debian 7 Hardening
+# Authors : Thibault Dewailly, OVH <thibault.dewailly@corp.ovh.com>
+#
+
+#
+# 13.12 Check That Users Are Assigned Valid Home Directories (Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+ERRORS=0
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    cat /etc/passwd | awk -F: '{ print $1 " " $3 " " $6 }' | while read USER USERID DIR; do
+        if [ $USERID -ge 1000 -a ! -d "$DIR" -a $USER != "nfsnobody" -a $USER != "nobody" ]; then
+            crit "The home directory ($DIR) of user $USER does not exist."
+            ERRORS=$((ERRORS+1))    
+        fi
+    done
+
+    if [ $ERRORS = 0 ]; then
+        ok "All home directories exists"
+    fi 
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    if [ $ERRORS != 0 ]; then
+        warn "Consider creating missing home directories"
+    fi
+    : 
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ ! -r /etc/default/cis-hardenning ]; then
+    echo "There is no /etc/default/cis-hardenning FILE, cannot source CIS_ROOT_DIR variable, aborting"
+    exit 128
+else
+    . /etc/default/cis-hardenning
+    if [ -z $CIS_ROOT_DIR ]; then
+        echo "No CIS_ROOT_DIR variable, aborting"
+    fi
+fi 
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+[ -r $CIS_ROOT_DIR/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh

bin/hardening/13.13_check_user_homedir_ownership.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+
+#
+# CIS Debian 7 Hardening
+# Authors : Thibault Dewailly, OVH <thibault.dewailly@corp.ovh.com>
+#
+
+#
+# 13.13 Check User Home Directory Ownership (Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+ERRORS=0
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+
+    cat /etc/passwd | awk -F: '{ print $1 " " $3 " " $6 }' | while read USER USERID DIR; do
+        if [ $USERID -ge 500 -a -d "$DIR" -a $USER != "nfsnobody" ]; then
+            OWNER=$(stat -L -c "%U" "$DIR")
+            if [ "$OWNER" != "$USER" ]; then
+                crit "The home directory ($DIR) of user $USER is owned by $OWNER."
+                ERRORS=$(($ERRORS+1))
+            fi
+        fi
+    done
+
+    if [ $ERRORS = 0 ]; then
+        ok "All home directories have correct ownership"
+    fi 
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    cat /etc/passwd | awk -F: '{ print $1 " " $3 " " $6 }' | while read USER USERID DIR; do
+        if [ $USERID -ge 500 -a -d "$DIR" -a $USER != "nfsnobody" ]; then
+            OWNER=$(stat -L -c "%U" "$DIR")
+            if [ "$OWNER" != "$USER" ]; then
+                warn "The home directory ($DIR) of user $USER is owned by $OWNER."
+                chown $USER $DIR
+            fi
+        fi
+    done
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ ! -r /etc/default/cis-hardenning ]; then
+    echo "There is no /etc/default/cis-hardenning FILE, cannot source CIS_ROOT_DIR variable, aborting"
+    exit 128
+else
+    . /etc/default/cis-hardenning
+    if [ -z $CIS_ROOT_DIR ]; then
+        echo "No CIS_ROOT_DIR variable, aborting"
+    fi
+fi 
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+[ -r $CIS_ROOT_DIR/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh

etc/conf.d/1.1_install_updates.cfg

@@ -1,2 +1,2 @@
 # Configuration for script of same name
-status=disabled
+status=enabled

etc/conf.d/13.11_find_passwd_group_inconsistencies.cfg

@@ -0,0 +1,2 @@
+# Configuration for script of same name
+status=enabled

etc/conf.d/13.12_users_valid_homedir.cfg

@@ -0,0 +1,2 @@
+# Configuration for script of same name
+status=enabled

etc/conf.d/13.13_check_user_homedir_ownership.cfg

@@ -0,0 +1,2 @@
+# Configuration for script of same name
+status=enabled