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AUSCERT External Security Bulletin Redistribution
ESB-2017.0918.2
Certec EDV GmbH atvise scada
28 April 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: Certec EDV GmbH atvise scada
Publisher: ICS-CERT
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-6031 CVE-2017-6029
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-17-096-01
Revision History: April 28 2017: Minor update
April 7 2017: Initial Release
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Advisory (ICSA-17-096-01)
Certec EDV GmbH atvise scada
Original release date: April 06, 2017
Legal Notice
All information products included in http://ics-cert.us-cert.gov are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
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 6.1
ATTENTION: Remotely exploitable/low skill level to exploit.
Vendor: Certec EDV GmbH
Equipment: atvise scada
Vulnerabilities: Cross-Site Scripting, Header Injection
AFFECTED PRODUCTS
The following versions of atvise scada, a HMI configuration platform,
are affected:
- --------- Begin Update A Part 1 of 2 --------
atvise scada prior to Version 3.0 without the vendor
built-in security mechanism activated.
- --------- End Update A Part 1 of 2 ----------
IMPACT
Successful exploitation of these vulnerabilities could cause the device
that the attacker is accessing to execute arbitrary code, affecting the
integrity of the device.
MITIGATION
- --------- Begin Update A Part 2 of 2 --------
Certec EDV GmbH advises affected users to activate the built-in security
mechanism (login, https, protected calls, etc.) of the product as described in
the documentation. Users can also upgrade to the newest version of the software
available on the Certec EDV GmbH web site (a user login will be needed to
obtain the latest version):
http://www.atvise.com/en/component/phocadownload/category/65-patches
(link is external)
In order to fully mitigate the vulnerabilities Certec EDV GmbH recommends that
users follow the guidelines in the atvise scada documentation for enabling
security measures that can be found in the following sections:
HTTP/HTTPS support,
Protected calls,
Login and user management, and
User and rights.
- --------- End Update A Part 2 of 2 ----------
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.
In addition, ICS-CERT recommends that users take the following measures
to protect themselves from social engineering attacks:
Do not click web links or open unsolicited attachments in email messages.
Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
No known public exploits specifically target these vulnerabilities.
VULNERABILITY OVERVIEW
IMPROPER NEUTRALIZATION OF HTTP HEADERS FOR SCRIPTING SYNTAX CWE-644
The header injection vulnerability has been identified, which may allow
remote code execution.
CVE-2017-6031 has been assigned to this vulnerability. A CVSS v3
base score of 6.1 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
CROSS-SITE SCRIPTING CWE-79
The cross-site scripting vulnerability has been identified, which may
allow remote code execution.
CVE-2017-6029 has been assigned to this vulnerability. A CVSS v3
base score of 5.4 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).
RESEARCHER
Sebastian Neef of Internetwache.org discovered the vulnerabilities.
BACKGROUND
Critical Infrastructure Sector: Critical Manufacturing
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Eisenstadt, Austria
Contact Information
For any questions related to this report, please contact ICS-CERT at:
Email: ics-cert@hq.dhs.gov
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
ICS-CERT continuously strives to improve its products and services. You
can help by choosing one of the links below to provide feedback about
this product.
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