ESB-2017.1709 - [Appliance] Schneider Electric Ampla MES: Access privileged data - Existing account 2017-07-07

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1709
          Advisory (ICSA-17-187-05) Schneider Electric Ampla MES
                                7 July 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Schneider Electric Ampla MES
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Access Privileged Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-9637 CVE-2017-9635 

Original Bulletin: 
   http://ics-cert.us-cert.gov/advisories/ICSA-17-187-05

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Advisory (ICSA-17-187-05)

Schneider Electric Ampla MES

Original release date: July 06, 2017

Legal Notice

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"as is" for informational purposes only. The Department of Homeland Security 
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contained within. DHS does not endorse any commercial product or service, 
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For 
more information about TLP, see http://www.us-cert.gov/tlp/.

CVSS v3 6.7

ATTENTION: Low skill level to exploit.

Vendor: Schneider Electric

Equipment: Ampla MES

Vulnerabilities: Cleartext Transmission of Sensitive Information, Inadequate 
Encryption Strength

AFFECTED PRODUCTS

Schneider Electric reports that the vulnerability affects the following Ampla
Manufacturing Execution System (MES) operational efficiency products:

Ampla MES versions 6.4 and prior.

IMPACT

Successful exploitation of this vulnerability could compromise credentials 
used to connect to third party databases or compromise credentials of Ampla 
users configured with Simple Security.

MITIGATION

Schneider Electric recommends that users of Ampla MES versions 6.4 and prior 
should upgrade to Ampla MES version 6.5 as soon as possible. Software updates
can be downloaded from Schneider Electrics Ampla Support Shopping Kiosk area 
or from the link below:

http://shoppingkiosk.schneider-electric.com/doc_info.aspx?DocRef=Ampla2016R1Software&isdvd=False&df=12&gid=411131
(link is external)

For more information, users of affected products can read Schneider Electrics
Ampla Security Bulletin LFSEC00000118 at the following location:

http://software.schneider-electric.com/pdf/security-bulletin/lfsec00000118/ 
(link is external)

NCCIC/ICS-CERT recommends that users take defensive measures to minimize the 
risk of exploitation of these vulnerabilities. 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 these vulnerabilities.

VULNERABILITY OVERVIEW

CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION CWE-319

Ampla MES provides capability to interact with data from third party 
databases. When connectivity to those databases is configured to use a SQL 
user name and password, an attacker may be able to sniff details from the 
connection string.

Note that when the third party database connectivity is configured with 
Windows Integrated Security as opposed to SQL username and password, the 
software is not vulnerable.

CVE-2017-9637 has been assigned to this vulnerability. A CVSS v3 base score of
6.7 has been calculated; the CVSS vector string is 
(AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

INADEQUATE ENCRYPTION STRENGTH CWE-326

Ampla MES provides capability to configure users and their privileges. When 
Ampla MES users are configured to use Simple Security, a weakness in the 
password hashing algorithm could be exploited to reverse the users password.

Note that when Ampla MES is configured to use Windows Integrated Security as 
opposed to Simple Security, the software is not vulnerable.

CVE-2017-9635 has been assigned to this vulnerability. A CVSS v3 base score of
4.2 has been calculated; the CVSS vector string is 
(AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L).

RESEARCHER

Ilya Karpov from Positive Technologies reported these vulnerabilities to 
Schneider Electric.

BACKGROUND

Critical Infrastructure Sectors: Critical Manufacturing, Water and Wastewater
Systems

Countries/Areas Deployed: Worldwide

Company Headquarters Location: France

Contact Information

For any questions related to this report, please contact ICS-CERT at:

Email: ics-cert@hq.dhs.gov (link sends e-mail)

Toll Free: 1-877-776-7585

International Callers: (208) 526-0900

For industrial control systems security information and incident reporting: 
http://ics-cert.us-cert.gov

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