mirror of
https://github.com/ovh/debian-cis.git
synced 2024-11-25 23:11:24 +01:00
2.2_tmp_nodev.sh
This commit is contained in:
thibault.dewailly
parent
01b03f7aeb
commit
0bf935bb17
80
bin/hardening/2.2_tmp_nodev.sh
Executable file
80
bin/hardening/2.2_tmp_nodev.sh
Executable file
@ -0,0 +1,80 @@
|
||||
#!/bin/bash
|
||||
|
||||
#
|
||||
# CIS Debian 7 Hardening
|
||||
#
|
||||
|
||||
#
|
||||
# 2.2 Set nodev option for /tmp Partition (Scored)
|
||||
#
|
||||
|
||||
set -e # One error, it's over
|
||||
set -u # One variable unset, it's over
|
||||
|
||||
# Quick factoring as many script use the same logic
|
||||
PARTITION="/tmp"
|
||||
OPTION="nodev"
|
||||
|
||||
# This function will be called if the script status is on enabled / audit mode
|
||||
audit () {
|
||||
info "Verifying that $PARTITION is a partition"
|
||||
FNRET=0
|
||||
is_a_partition "$PARTITION"
|
||||
if [ $FNRET -gt 0 ]; then
|
||||
crit "$PARTITION is not a partition"
|
||||
FNRET=2
|
||||
else
|
||||
ok "$PARTITION is a partition"
|
||||
has_mount_option $PARTITION $OPTION
|
||||
if [ $FNRET -gt 0 ]; then
|
||||
crit "$PARTITION have no option $OPTION in fstab !"
|
||||
FNRET=1
|
||||
else
|
||||
ok "$PARTITION have $OPTION in fstab"
|
||||
has_mounted_option $PARTITION $OPTION
|
||||
if [ $FNRET -gt 0 ]; then
|
||||
warn "$PARTITION is not mounted with $OPTION at runtime"
|
||||
FNRET=3
|
||||
else
|
||||
ok "$PARTITION mounted with $OPTION"
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
# This function will be called if the script status is on enabled mode
|
||||
apply () {
|
||||
if [ $FNRET = 0 ]; then
|
||||
ok "$PARTITION is correctly set"
|
||||
elif [ $FNRET = 2 ]; then
|
||||
crit "$PARTITION is not a partition, correct this by yourself, I cannot help you here"
|
||||
elif [ $FNRET = 1 ]; then
|
||||
info "Adding $OPTION to fstab"
|
||||
add_option_to_fstab $PARTITION $OPTION
|
||||
info "Remounting $PARTITION from fstab"
|
||||
remount_partition $PARTITION
|
||||
elif [ $FNRET = 3 ]; then
|
||||
info "Remounting $PARTITION from fstab"
|
||||
remount_partition $PARTITION
|
||||
fi
|
||||
}
|
||||
|
||||
# This function will check config parameters required
|
||||
check_config() {
|
||||
# No param for this script
|
||||
:
|
||||
}
|
||||
|
||||
# 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 ] && . $CIS_ROOT_DIR/lib/main.sh
|
||||
2
etc/conf.d/2.2_tmp_nodev.cfg
Normal file
2
etc/conf.d/2.2_tmp_nodev.cfg
Normal file
@ -0,0 +1,2 @@
|
||||
# Configuration for script of same name
|
||||
status=disabled
|
||||
@ -3,3 +3,7 @@
|
||||
|
||||
# Valid values are debug info warning error
|
||||
LOGLEVEL=debug
|
||||
|
||||
# Backup directory, every file touched by hardennign will be backuped here, with versionning
|
||||
# Means that if a file is modified more than once during the process, you will have hardening step diffs in the folder
|
||||
BACKUPDIR="$CIS_ROOT_DIR/tmp/backups"
|
||||
|
||||
@ -1,6 +1,26 @@
|
||||
# CIS Debian 7 Hardening common functions
|
||||
|
||||
#
|
||||
# File Backup functions
|
||||
#
|
||||
backup_file() {
|
||||
FILE=$1
|
||||
if [ ! -f $FILE ]; then
|
||||
crit "Cannot backup $FILE, it's not a file"
|
||||
FNRET=1
|
||||
else
|
||||
TARGET=$(echo $FILE | sed -s 's/\//./g' | sed -s 's/^.//' | sed -s "s/$/.$(date +%F-%T)/" )
|
||||
TARGET="$BACKUPDIR/$TARGET"
|
||||
debug "Backuping $FILE to $TARGET"
|
||||
cp -a $FILE $TARGET
|
||||
FNRET=0
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
#
|
||||
# Logging functions
|
||||
#
|
||||
|
||||
case $LOGLEVEL in
|
||||
error )
|
||||
|
||||
@ -1,23 +1,9 @@
|
||||
# Defines constants for CIS Debian 7 Hardening
|
||||
|
||||
#
|
||||
# Script and shell commands homogeneity
|
||||
export LANG=C
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
#### Useful Colot constants settings for loglevels
|
||||
#### Useful Color constants settings for loglevels
|
||||
|
||||
# Reset Color (for syslog)
|
||||
NC='\033[0m'
|
||||
|
||||
86
lib/utils.sh
86
lib/utils.sh
@ -2,40 +2,85 @@
|
||||
|
||||
|
||||
|
||||
#
|
||||
# Return if a package is installed
|
||||
# @param $1 package name
|
||||
#
|
||||
is_installed()
|
||||
{
|
||||
PKG_NAME=$1
|
||||
if `dpkg -s $PKG_NAME 2> /dev/null | grep -q '^Status: install '` ; then
|
||||
return 0
|
||||
fi
|
||||
return 1
|
||||
}
|
||||
|
||||
#
|
||||
# Mounting point manipulation
|
||||
#
|
||||
|
||||
# Verify $1 is a partition declared in fstab
|
||||
is_a_partition() {
|
||||
|
||||
local PARTITION_NAME=$1
|
||||
FNRET=128
|
||||
if $(grep "[[:space:]]$1[[:space:]]" /etc/fstab | grep -vqE "^#"); then
|
||||
debug "$PARTITION found in fstab"
|
||||
FNRET=0
|
||||
else
|
||||
debug "Unable to find $PARTITION in fstab"
|
||||
FNRET=1
|
||||
fi
|
||||
}
|
||||
|
||||
# Verify that $1 is mounted at runtime
|
||||
is_mounted() {
|
||||
local PARTITION_NAME=$1
|
||||
if $(grep -q "[[:space:]]$1[[:space:]]" /proc/mounts); then
|
||||
debug "$PARTITION found in /proc/mounts, it's mounted"
|
||||
FNRET=0
|
||||
else
|
||||
debug "Unable to find $PARTITION in /proc/mounts"
|
||||
FNRET=1
|
||||
fi
|
||||
}
|
||||
|
||||
# contains helper functions to work with apt
|
||||
# Verify $1 has the proper option $2 in fstab
|
||||
has_mount_option() {
|
||||
local PARTITION=$1
|
||||
local OPTION=$2
|
||||
if $(grep "[[:space:]]$1[[:space:]]" /etc/fstab | grep -vE "^#" | awk {'print $4'} | grep -q "$2"); then
|
||||
debug "$OPTION has been detected in fstab for partition $PARTITION"
|
||||
FNRET=0
|
||||
else
|
||||
debug "Unable to find $OPTION in fstab for partition $PARTITION"
|
||||
FNRET=1
|
||||
fi
|
||||
}
|
||||
|
||||
# Verify $1 has the proper option $2 at runtime
|
||||
has_mounted_option() {
|
||||
local PARTITION=$1
|
||||
local OPTION=$2
|
||||
if $(grep "[[:space:]]$1[[:space:]]" /proc/mounts | awk {'print $4'} | grep -q "$2"); then
|
||||
debug "$OPTION has been detected in /proc/mounts for partition $PARTITION"
|
||||
FNRET=0
|
||||
else
|
||||
debug "Unable to find $OPTION in /proc/mounts for partition $PARTITION"
|
||||
FNRET=1
|
||||
fi
|
||||
}
|
||||
|
||||
# Setup mount option in fstab
|
||||
add_option_to_fstab() {
|
||||
local PARTITION=$1
|
||||
local OPTION=$2
|
||||
debug "Setting $OPTION for $PARTITION in fstab"
|
||||
backup_file "/etc/fstab"
|
||||
# For example :
|
||||
# /dev/sda9 /home ext4 auto,acl,errors=remount-ro 0 2
|
||||
# /dev/sda9 /home ext4 auto,acl,errors=remount-ro,nodev 0 2
|
||||
debug "Sed command : sed -ie \"s;\(.*\)\(\s*\)\s\($PARTITION\)\s\(\s*\)\(\w*\)\(\s*\)\(\w*\)*;\1\2 \3 \4\5\6\7,$OPTION;\" /etc/fstab"
|
||||
sed -ie "s;\(.*\)\(\s*\)\s\($PARTITION\)\s\(\s*\)\(\w*\)\(\s*\)\(\w*\)*;\1\2 \3 \4\5\6\7,$OPTION;" /etc/fstab
|
||||
}
|
||||
|
||||
remount_partition() {
|
||||
local PARTITION=$1
|
||||
debug "Remounting $PARTITION"
|
||||
mount -o remount $PARTITION
|
||||
}
|
||||
|
||||
#
|
||||
# Helper functions to work with apt
|
||||
#
|
||||
|
||||
apt_update_if_needed()
|
||||
{
|
||||
@ -57,7 +102,7 @@ apt_check_updates()
|
||||
{
|
||||
local NAME="$1"
|
||||
local DETAILS="/dev/shm/${NAME}"
|
||||
LANGUAGE=C apt-get upgrade -s 2>/dev/null | grep -E "^Inst" > $DETAILS || :
|
||||
apt-get upgrade -s 2>/dev/null | grep -E "^Inst" > $DETAILS || :
|
||||
local COUNT=$(wc -l < "$DETAILS")
|
||||
FNRET=128 # Unknown function return result
|
||||
RESULT="" # Result output for upgrade
|
||||
@ -70,3 +115,16 @@ apt_check_updates()
|
||||
fi
|
||||
rm $DETAILS
|
||||
}
|
||||
|
||||
#
|
||||
# Returns if a package is installed
|
||||
#
|
||||
|
||||
is_installed()
|
||||
{
|
||||
PKG_NAME=$1
|
||||
if `dpkg -s $PKG_NAME 2> /dev/null | grep -q '^Status: install '` ; then
|
||||
FNRET=0
|
||||
fi
|
||||
FNRET=1
|
||||
}
|
||||
|
||||
2
tmp/backups/.gitignore
vendored
Normal file
2
tmp/backups/.gitignore
vendored
Normal file
@ -0,0 +1,2 @@
|
||||
# Ignore everything, this is a place holder for the git
|
||||
*
|
||||
Loading…
Reference in New Issue
Block a user