140 lines
4.2 KiB
Bash
Executable File
140 lines
4.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# harbian-audit for Debian GNU/Linux Debian 7/8/9/10/11/12 or CentOS Hardening
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# Modify by: Samson-W (sccxboy@gmail.com)
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#
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#
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# 2.4 Set noexec option for /tmp Partition/filesystem (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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HARDENING_LEVEL=2
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# Quick factoring as many script use the same logic
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PARTITION="/tmp"
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OPTION="noexec"
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SERVICEPATH_DEBIAN="/usr/share/systemd/tmp.mount"
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SERVICENAME="tmp.mount"
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CENTOS_SERVICEPATH="/usr/lib/systemd/system/tmp.mount"
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DEBIAN_SERVICEPATH="/lib/systemd/system/tmp.mount"
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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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info "Verifying that $PARTITION is a partition/filesystem"
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FNRET=0
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#If /tmp is set in /etc/fstab, only check /etc/fstab and disable tmp.mount service if it's exist
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is_a_partition "$PARTITION"
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if [ $FNRET -eq 0 ]; then
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ok "$PARTITION is a partition"
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has_mount_option $PARTITION $OPTION
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if [ $FNRET -eq 0 ]; then
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ok "$PARTITION has $OPTION in fstab"
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has_mounted_option $PARTITION $OPTION
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if [ $FNRET -gt 0 ]; then
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warn "$PARTITION is not mounted with $OPTION at runtime"
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FNRET=4
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else
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ok "$PARTITION mounted with $OPTION"
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FNRET=0
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fi
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else
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crit "$PARTITION has no option $OPTION in fstab!"
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FNRET=1
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fi
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else
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warn "$PARTITION is not partition in /etc/fstab, check tmp.mount service"
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if [ $OS_RELEASE -eq 2 ]; then
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UNITSERVICEPATH=$CENTOS_SERVICEPATH
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else
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UNITSERVICEPATH=$DEBIAN_SERVICEPATH
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fi
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if [ -e $UNITSERVICEPATH ]; then
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has_mount_option_systemd $UNITSERVICEPATH $OPTION
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if [ $FNRET -gt 0 ]; then
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crit "$PARTITION has no option $OPTION in systemd service!"
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FNRET=3
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else
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ok "$PARTITION has $OPTION in systemd service"
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has_mounted_option $PARTITION $OPTION
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if [ $FNRET -gt 0 ]; then
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warn "$PARTITION is not mounted with $OPTION at runtime"
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FNRET=5
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else
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ok "$PARTITION mounted with $OPTION"
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FNRET=0
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fi
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fi
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else
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crit "$UNITSERVICEPATH is not exist! Please apply 2.1 first!"
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FNRET=2
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fi
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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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if [ $OS_RELEASE -eq 2 ]; then
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UNITSERVICEPATH=$CENTOS_SERVICEPATH
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else
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UNITSERVICEPATH=$DEBIAN_SERVICEPATH
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fi
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if [ $FNRET = 0 ]; then
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ok "$PARTITION is correctly set"
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elif [ $FNRET = 2 ]; then
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crit "System unit $UNITSERVICEPATH is not exist! Please apply 2.1 first!"
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elif [ $FNRET = 1 ]; then
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info "Adding $OPTION to fstab"
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add_option_to_fstab $PARTITION $OPTION
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info "Remounting $PARTITION from fstab"
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is_mounted $PARTITION
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if [ $FNRET = 1 ]; then
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mount $PARTITION
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else
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remount_partition $PARTITION
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fi
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elif [ $FNRET = 3 ]; then
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info "Adding $OPTION to systemd"
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add_option_to_systemd $UNITSERVICEPATH $OPTION $SERVICENAME
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remount_partition_by_systemd $SERVICENAME $PARTITION
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elif [ $FNRET = 4 ]; then
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info "Remounting $PARTITION from fstab"
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is_mounted $PARTITION
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if [ $FNRET = 1 ]; then
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mount $PARTITION
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else
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remount_partition $PARTITION
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fi
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elif [ $FNRET = 5 ]; then
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info "Remounting $PARTITION from systemd"
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remount_partition_by_systemd $SERVICENAME $PARTITION
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fi
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}
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# This function will check config parameters required
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check_config() {
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# No param for this script
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$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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. $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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