13.7_check_user_dir_perm.sh

bin/hardening/13.7_check_user_dir_perm.sh

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+#!/bin/bash
+
+#
+# CIS Debian 7 Hardening
+# Authors : Thibault Dewailly, OVH <thibault.dewailly@corp.ovh.com>
+#
+
+#
+# 13.7 Check Permissions on User Home Directories (Scored)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+ERRORS=0
+PERMISSION="750"
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    for dir in $(cat /etc/passwd | /bin/egrep -v '(root|halt|sync|shutdown)' | awk -F: '($7 != "/usr/sbin/nologin" && $7 != "/bin/false" && $7 !="/nonexistent" ) { print $6 }'); do
+        debug "Working on $dir"
+        debug "Exceptions : $EXCEPTIONS"
+        debug "echo \"$EXCEPTIONS\" | grep -q $dir"
+        if echo "$EXCEPTIONS" | grep -q $dir; then
+            debug "$dir is confirmed as an exception"
+            RESULT=$(sed "s!$dir!!" <<< "$RESULT")
+        else
+            debug "$dir not found in exceptions"
+        fi
+        if [ -d $dir ]; then
+            dirperm=$(/bin/ls -ld $dir | cut -f1 -d" ")
+            if [ $(echo $dirperm | cut -c6 ) != "-" ]; then
+                crit "Group Write permission set on directory $dir"
+            fi
+            if [ $(echo $dirperm | cut -c8 ) != "-" ]; then
+                crit "Other Read permission set on directory $dir"
+            fi
+            if [ $(echo $dirperm | cut -c9 ) != "-" ]; then
+                crit "Other Write permission set on directory $dir"
+            fi
+            if [ $(echo $dirperm | cut -c10 ) != "-" ]; then
+                crit "Other Execute permission set on directory $dir"
+            fi
+        fi
+    done
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    for dir in $(cat /etc/passwd | /bin/egrep -v '(root|halt|sync|shutdown)' | awk -F: '($7 != "/usr/sbin/nologin" && $7 != "/bin/false" && $7 !="/nonexistent" ) { print $6 }'); do
+        debug "Working on $dir"
+        debug "Exceptions : $EXCEPTIONS"
+        debug "echo \"$EXCEPTIONS\" | grep -q $dir"
+        if echo "$EXCEPTIONS" | grep -q $dir; then
+            debug "$dir is confirmed as an exception"
+            RESULT=$(sed "s!$dir!!" <<< "$RESULT")
+        else
+            debug "$dir not found in exceptions"
+        fi
+        if [ -d $dir ]; then
+            dirperm=$(/bin/ls -ld $dir | cut -f1 -d" ")
+            if [ $(echo $dirperm | cut -c6 ) != "-" ]; then
+                warn "Group Write permission set on directory $dir"
+                chmod g-w $dir
+            fi
+            if [ $(echo $dirperm | cut -c8 ) != "-" ]; then
+                warn "Other Read permission set on directory $dir"
+                chmod o-r $dir
+            fi
+            if [ $(echo $dirperm | cut -c9 ) != "-" ]; then
+                warn "Other Write permission set on directory $dir"
+                chmod o-w $dir
+            fi
+            if [ $(echo $dirperm | cut -c10 ) != "-" ]; then
+                warn "Other Execute permission set on directory $dir"   
+                chmod o-x $dir
+            fi
+        fi
+    done
+}
+
+# This function will check config parameters required
+check_config() {
+    if [ -z "$EXCEPTIONS" ]; then
+        EXCEPTIONS="@"
+    fi
+}
+
+# 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/13.7_check_user_dir_perm.cfg

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+# Configuration for script of same name
+status=enabled
+# Put here user home directories exceptions, separated by spaces
+EXCEPTIONS=""