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13.7_check_user_dir_perm.sh

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thibault.dewailly 2016-04-16 18:11:53 +02:00
parent b24a415dce
commit f82a438246
3 changed files with 105 additions and 0 deletions
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0
bin/hardenning.sh → bin/hardening.sh
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101
bin/hardening/13.7_check_user_dir_perm.sh Executable file
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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

4
etc/conf.d/13.7_check_user_dir_perm.cfg Normal file
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# Configuration for script of same name
status=enabled
# Put here user home directories exceptions, separated by spaces
EXCEPTIONS=""