def attack_upload(self, original_request):
# Should not yield request as it will mark it as attacked
mutator = FileMutator(payloads=self.payloads)
current_parameter = None
vulnerable_parameter = False
for mutated_request, parameter, payload, flags in mutator.mutate(original_request):
try:
if current_parameter != parameter:
# Forget what we know about current parameter
current_parameter = parameter
vulnerable_parameter = False
elif vulnerable_parameter:
# If parameter is vulnerable, just skip till next parameter
continue
if self.verbose == 2:
print("[¨] {0}".format(mutated_request))
try:
response = self.crawler.send(mutated_request)
except RequestException as exception:
yield exception
else:
pattern = search_pattern(response.content, self.flag_to_patterns(flags))
if pattern and not self.false_positive(original_request, pattern):
self.add_vuln(
request_id=original_request.path_id,
category=Vulnerability.XXE,
level=Vulnerability.HIGH_LEVEL,
request=mutated_request,
info="XXE vulnerability leading to file disclosure",
parameter=parameter
)
self.log_red("---")
self.log_red(
Vulnerability.MSG_PARAM_INJECT,
self.MSG_VULN,
original_request.url,
parameter
)
self.log_red(Vulnerability.MSG_EVIL_REQUEST)
self.log_red(mutated_request.http_repr())
self.log_red("---")
vulnerable_parameter = True
self.vulnerables.add(original_request.path_id)
except KeyboardInterrupt as exception:
yield exception
async def attack_upload(self, original_request):
mutator = FileMutator(payloads=self.payloads)
current_parameter = None
vulnerable_parameter = False
for mutated_request, parameter, _payload, flags in mutator.mutate(original_request):
if current_parameter != parameter:
# Forget what we know about current parameter
current_parameter = parameter
vulnerable_parameter = False
elif vulnerable_parameter:
# If parameter is vulnerable, just skip till next parameter
continue
if self.verbose == 2:
print("[¨] {0}".format(mutated_request))
try:
response = await self.crawler.async_send(mutated_request)
except RequestError:
self.network_errors += 1
else:
pattern = search_pattern(response.content, self.flag_to_patterns(flags))
if pattern and not await self.false_positive(original_request, pattern):
self.add_vuln(
request_id=original_request.path_id,
category=NAME,
level=HIGH_LEVEL,
request=mutated_request,
info="XXE vulnerability leading to file disclosure",
parameter=parameter
)
self.log_red("---")
self.log_red(
Messages.MSG_PARAM_INJECT,
self.MSG_VULN,
original_request.url,
parameter
)
self.log_red(Messages.MSG_EVIL_REQUEST)
self.log_red(mutated_request.http_repr())
self.log_red("---")
vulnerable_parameter = True
self.vulnerables.add(original_request.path_id)
def finish(self):
endpoint_url = "{}get_xxe.php?session_id={}".format(
self.internal_endpoint, self._session_id)
print(
_("[*] Asking endpoint URL {} for results, please wait...").format(
endpoint_url))
sleep(2)
# A la fin des attaques on questionne le endpoint pour savoir s'il a été contacté
endpoint_request = Request(endpoint_url)
try:
response = self.crawler.send(endpoint_request)
except RequestException:
self.network_errors += 1
print(
_("[!] Unable to request endpoint URL '{}'").format(
self.internal_endpoint))
return
data = response.json
if not isinstance(data, dict):
return
for request_id in data:
original_request = self.persister.get_path_by_id(request_id)
if original_request is None:
continue
# raise ValueError("Could not find the original request with ID {}".format(request_id))
page = original_request.path
for hex_param in data[request_id]:
parameter = unhexlify(hex_param).decode("utf-8")
for infos in data[request_id][hex_param]:
request_url = infos["url"]
# Date in ISO format
request_date = infos["date"]
request_ip = infos["ip"]
request_size = infos["size"]
payload_name = infos["payload"]
if parameter == "QUERY_STRING":
vuln_message = Messages.MSG_QS_INJECT.format(
self.MSG_VULN, page)
elif parameter == "raw body":
vuln_message = _(
"Out-Of-Band {0} by sending raw XML in request body"
).format(self.MSG_VULN)
else:
vuln_message = _(
"Out-Of-Band {0} via injection in the parameter {1}"
).format(self.MSG_VULN, parameter)
more_infos = _(
"The target sent {0} bytes of data to the endpoint at {1} with IP {2}.\n"
"Received data can be seen at {3}.").format(
request_size, request_date, request_ip,
request_url)
vuln_message += "\n" + more_infos
# placeholder if shit happens
payload = (
"<xml>"
"See https://phonexicum.github.io/infosec/xxe.html#attack-vectors"
"</xml>")
for payload, flags in self.payloads:
if "{}.dtd".format(payload_name) in payload:
payload = payload.replace(
"[PATH_ID]", str(original_request.path_id))
payload = payload.replace("[PARAM_AS_HEX]",
"72617720626f6479")
break
if parameter == "raw body":
mutated_request = Request(original_request.path,
method="POST",
enctype="text/xml",
post_params=payload)
elif parameter == "QUERY_STRING":
mutated_request = Request("{}?{}".format(
original_request.path, quote(payload)),
method="GET")
elif parameter in original_request.get_keys or parameter in original_request.post_keys:
mutator = Mutator(
methods="G"
if original_request.method == "GET" else "P",
payloads=[(payload, Flags())],
qs_inject=self.must_attack_query_string,
parameters=[parameter],
skip=self.options.get("skipped_parameters"))
mutated_request, __, __, __ = next(
mutator.mutate(original_request))
else:
mutator = FileMutator(
payloads=[(payload, Flags())],
parameters=[parameter],
skip=self.options.get("skipped_parameters"))
mutated_request, __, __, __ = next(
mutator.mutate(original_request))
self.add_vuln(request_id=original_request.path_id,
category=NAME,
level=HIGH_LEVEL,
request=mutated_request,
info=vuln_message,
parameter=parameter)
self.log_red("---")
self.log_red(vuln_message)
self.log_red(Messages.MSG_EVIL_REQUEST)
self.log_red(mutated_request.http_repr())
self.log_red("---")
