debian-cis/bin/hardening/6.2.10_check_user_dot_file_perm.sh
2020-12-04 15:14:18 +01:00

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#!/bin/bash
# run-shellcheck
#
# CIS Debian Hardening
#
#
# 6.2.10 Ensure users' dot files are not group or world writable (Scored)
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Check user dot file permissions."
ERRORS=0
# This function will be called if the script status is on enabled / audit mode
audit() {
for DIR in $(get_db passwd | egrep -v '(root|halt|sync|shutdown)' | awk -F: '($7 != "/usr/sbin/nologin" && $7 != "/bin/false" && $7 !="/nonexistent" ) { print $6 }'); do
debug "Working on $DIR"
for FILE in $DIR/.[A-Za-z0-9]*; do
if [ ! -h "$FILE" -a -f "$FILE" ]; then
FILEPERM=$(ls -ld $FILE | cut -f1 -d" ")
if [ $(echo $FILEPERM | cut -c6) != "-" ]; then
crit "Group Write permission set on FILE $FILE"
ERRORS=$((ERRORS + 1))
fi
if [ $(echo $FILEPERM | cut -c9) != "-" ]; then
crit "Other Write permission set on FILE $FILE"
ERRORS=$((ERRORS + 1))
fi
fi
done
done
if [ "$ERRORS" = 0 ]; then
ok "Dot file permission in users directories are correct"
fi
}
# This function will be called if the script status is on enabled mode
apply() {
for DIR in $(get_db passwd | egrep -v '(root|halt|sync|shutdown)' | awk -F: '($7 != "/usr/sbin/nologin" && $7 != "/bin/false" && $7 !="/nonexistent" ) { print $6 }'); do
for FILE in $DIR/.[A-Za-z0-9]*; do
if [ ! -h "$FILE" -a -f "$FILE" ]; then
FILEPERM=$(ls -ld $FILE | cut -f1 -d" ")
if [ $(echo $FILEPERM | cut -c6) != "-" ]; then
warn "Group Write permission set on FILE $FILE"
chmod g-w "$FILE"
fi
if [ $(echo $FILEPERM | cut -c9) != "-" ]; then
warn "Other Write permission set on FILE $FILE"
chmod o-w "$FILE"
fi
fi
done
done
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
# shellcheck source=../../debian/default
. /etc/default/cis-hardening
fi
if [ -z "$CIS_ROOT_DIR" ]; then
echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
echo "Cannot source CIS_ROOT_DIR variable, aborting."
exit 128
fi
# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
if [ -r "$CIS_ROOT_DIR"/lib/main.sh ]; then
# shellcheck source=../../lib/main.sh
. "$CIS_ROOT_DIR"/lib/main.sh
else
echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
exit 128
fi