I. VULNERABILITIES
-------------------------

1. Reflected XSS Attack vulnerability in Climatix BACnet/IP communication
module from Siemens

2. Unrestricted upload of files


II. BACKGROUND
-------------------------

BACnet/IP communication modules help to integrate controller types POL6XX
of the Climatix family into BACnet networks


III. DESCRIPTION
-------------------------

1. XSS,Has been detected Reflected XSS vulnerability

http://IPDIRECTION/bgi/dumpfile.dll?")</b><script>alert("hacked");</script>


2. Unrestricted upload of files:

http://IPDIRECTION/bgi/filemanager.dll#upload

V. BUSINESS IMPACT
-------------------------

An attacker can execute arbitrary HTML or script code in a targeted
user's browser, that allows the execution of arbitrary HTML/script
code to be executed in the context of the victim user's browser
allowing Cookie Theft/Session Hijacking, thus enabling full access the
box.

The box can be compromised due to upload of files and execution.


VI. SYSTEMS AFFECTED
-------------------------

Climatix BACnet/IP communication module: All versions < V10.34


VII. SOLUTION
-------------------------

Siemens provides firmware update Climatix BACnet/IP communication module
V10.34 which fixes the vulnerability (XSS).

The new firmware update includes further security improvements (e.g. web
server
authentication enabled by default) due to  vulnerabilities founded like
uncontrolled upload of files and unrestricted execution of dangerous
functions like "shell.exe" and "cmd.exe".

Siemens Security Advissory:
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-142512.pdf

ICS-CERT: https://ics-cert.us-cert.gov/advisories/ICSA-15-176-01

Detected and reported by J. Francisco Bolivar (es.linkedin.com/in/jfbolivar/)
@Jfran_cbit