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             AUSCERT External Security Bulletin Redistribution

        Advisory (ICSA-17-278-02)  Siemens 7KT PAC1200 Data Manager
                           Authentication Bypass
                              6 October 2017


        AusCERT Security Bulletin Summary

Product:           Siemens 7KT PAC1200 Data Manager
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Administrator Compromise -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-9944  

Original Bulletin: 

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Advisory (ICSA-17-278-02)

Siemens 7KT PAC1200 Data Manager

Original release date: October 05, 2017

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CVSS v3 9.8

ATTENTION: Remotely exploitable/low skill level to exploit.

Vendor: Siemens

Equipment: 7KT PAC1200 data manager

Vulnerability: Authentication Bypass Using an Alternate Path or Channel


Siemens reports that the vulnerability affects the following versions of the 
7KT PAC1200 data manager (7KT1260) from the SENTRON portfolio:

7KT PAC1200 data manager: All versions prior to V2.03


Successful exploitation of this vulnerability could allow an attacker to 
bypass authentication mechanisms and perform administrative functions. 


Siemens provides firmware Version V2.03 for 7KT PAC1200 data manager (7KT1260)
from the SENTRON portfolio, which fixes the vulnerability and recommends users
update to the new fixed version. The firmware update V2.0.3 for 7KT PAC1200 
data manager (7KT1260) from the SENTRON portfolio can be found on the Siemens
web site at the following location:

https://support.industry.siemens.com/cs/ww/de/view/109749883/en?dl=en (link is

As a general security measure, Siemens strongly recommends protecting network
access to the devices with appropriate mechanisms. Siemens advises configuring
the environment according to Siemens operational guidelines in order to run 
the devices in a protected IT environment.

https://www.siemens.com/cert/operational-guidelines-industrial-security (link
is external)

For more information on this vulnerability and more detailed mitigation 
instructions, please see Siemens Security Advisory SSA-971654 at the following

http://www.siemens.com/cert/en/cert-security-advisories.htm (link is external)

NCCIC/ICS-CERT recommends that users take defensive measures to minimize the 
risk of exploitation of this vulnerability. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, 
and ensure that they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls, and 
isolate them from the business network.
When remote access is required, use secure methods, such as Virtual 
Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and 
should be updated to the most current version available. Also recognize that 
VPN is only as secure as the connected devices.

ICS-CERT reminds organizations to perform proper impact analysis and risk 
assessment prior to deploying defensive measures.

ICS-CERT also provides a section for control systems security recommended 
practices on the ICS-CERT web page. Several recommended practices are 
available for reading and download, including Improving Industrial Control 
Systems Cybersecurity with Defense-in-Depth Strategies.

Additional mitigation guidance and recommended practices are publicly 
available in the ICSCERT Technical Information Paper, 
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation 
Strategies, that is available for download from the ICS-CERT web site.

Organizations observing any suspected malicious activity should follow their 
established internal procedures and report their findings to ICS-CERT for 
tracking and correlation against other incidents.

No known public exploits specifically target this vulnerability.



The integrated web server (Port 80/TCP) of the affected devices could allow an
unauthenticated remote attacker to perform administrative operations over the

CVE-2017-9944 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been calculated; the CVSS vector string is 


Maxim Rupp reported this vulnerability directly to Siemens.


Critical Infrastructure Sectors: Energy

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Germany

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