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https://github.com/ovh/debian-cis.git
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120 lines
3.9 KiB
Bash
Executable File
120 lines
3.9 KiB
Bash
Executable File
#!/bin/bash
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#
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# CIS Debian 7/8 Hardening /!\ Not in the Guide
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#
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#
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# 99.2 Disable USB Devices
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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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USER='root'
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PATTERN='ACTION=="add", SUBSYSTEMS=="usb", TEST=="authorized_default", ATTR{authorized_default}="0"' # We do test disabled by default, whitelist is up to you
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FILES_TO_SEARCH='/etc/udev/rules.d'
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FILE='/etc/udev/rules.d/10-CIS_99.2_usb_devices.sh'
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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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SEARCH_RES=0
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for FILE_SEARCHED in $FILES_TO_SEARCH; do
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if [ $SEARCH_RES = 1 ]; then break; fi
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if test -d $FILE_SEARCHED; then
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debug "$FILE_SEARCHED is a directory"
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for file_in_dir in $(ls $FILE_SEARCHED); do
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does_pattern_exist_in_file "$FILE_SEARCHED/$file_in_dir" "^$PATTERN"
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if [ $FNRET != 0 ]; then
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debug "$PATTERN is not present in $FILE_SEARCHED/$file_in_dir"
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else
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ok "$PATTERN is present in $FILE_SEARCHED/$file_in_dir"
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SEARCH_RES=1
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break
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fi
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done
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else
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does_pattern_exist_in_file "$FILE_SEARCHED" "^$PATTERN"
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if [ $FNRET != 0 ]; then
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debug "$PATTERN is not present in $FILE_SEARCHED"
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else
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ok "$PATTERN is present in $FILES_TO_SEARCH"
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SEARCH_RES=1
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fi
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fi
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done
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if [ $SEARCH_RES = 0 ]; then
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crit "$PATTERN is not present in $FILES_TO_SEARCH"
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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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SEARCH_RES=0
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for FILE_SEARCHED in $FILES_TO_SEARCH; do
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if [ $SEARCH_RES = 1 ]; then break; fi
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if test -d $FILE_SEARCHED; then
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debug "$FILE_SEARCHED is a directory"
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for file_in_dir in $(ls $FILE_SEARCHED); do
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does_pattern_exist_in_file "$FILE_SEARCHED/$file_in_dir" "^$PATTERN"
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if [ $FNRET != 0 ]; then
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debug "$PATTERN is not present in $FILE_SEARCHED/$file_in_dir"
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else
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ok "$PATTERN is present in $FILE_SEARCHED/$file_in_dir"
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SEARCH_RES=1
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break
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fi
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done
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else
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does_pattern_exist_in_file "$FILE_SEARCHED" "^$PATTERN"
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if [ $FNRET != 0 ]; then
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debug "$PATTERN is not present in $FILE_SEARCHED"
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else
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ok "$PATTERN is present in $FILES_TO_SEARCH"
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SEARCH_RES=1
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fi
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fi
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done
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if [ $SEARCH_RES = 0 ]; then
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warn "$PATTERN is not present in $FILES_TO_SEARCH"
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touch $FILE
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chmod 644 $FILE
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add_end_of_file $FILE '
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# By default, disable all.
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ACTION=="add", SUBSYSTEMS=="usb", TEST=="authorized_default", ATTR{authorized_default}="0"
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# Enable hub devices.
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ACTION=="add", ATTR{bDeviceClass}=="09", TEST=="authorized", ATTR{authorized}="1"
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# Enables keyboard devices
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ACTION=="add", ATTR{product}=="*[Kk]eyboard*", TEST=="authorized", ATTR{authorized}="1"
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# PS2-USB converter
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ACTION=="add", ATTR{product}=="*Thinnet TM*", TEST=="authorized", ATTR{authorized}="1"
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'
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fi
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$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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