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AUSCERT External Security Bulletin Redistribution
ESB-2016.1673
Rexroth Bosch BLADEcontrol-WebVIS Vulnerabilities
6 July 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: Rexroth Bosch BLADEcontrol-WebVIS
Publisher: ICS-CERT
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2016-4508 CVE-2016-4507
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-16-187-01
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Advisory (ICSA-16-187-01)
Rexroth Bosch BLADEcontrol-WebVIS Vulnerabilities
Original release date: July 05, 2016
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/.
OVERVIEW
Independent researcher Maxim Rupp has identified a SQL injection vulnerability
and a cross-site scripting vulnerability in the Rexroth Bosch
BLADEcontrol-WebVIS. Rexroth Bosch has produced a new version to mitigate
these vulnerabilities.
These vulnerabilities could be exploited remotely.
AFFECTED PRODUCTS
The following BLADEcontrol-WebVIS versions are affected:
BLADEcontrol-WebVIS, Version 3.0.2 and earlier.
IMPACT
Application is vulnerable to a SQL injection vulnerability by performing
database operations that were unintended by the web application designer and,
in some instances, can lead to compromise of the database server or lead to
remote code execution. Application also fails to validate, filter, or encode
user input before returning it to a users web client.
Impact to individual organizations depends on many factors that are unique to
each organization. NCCIC/ICS-CERT recommends that organizations evaluate the
impact of these vulnerabilities based on their operational environment,
architecture, and product implementation.
BACKGROUND
Rexroth Bosch is a Germany-based company that maintains offices in 22
countries around the world, including the US, UK, Netherlands, Italy, India,
Germany, France, Czech Republic, China, and Australia.
The affected product, BLADEcontrol, is a web-based HMI system. According to
Rexroth Bosch, BLADEcontrol is deployed across the Energy sector. Rexroth
Bosch estimates that this product is used in 80 countries.
VULNERABILITY CHARACTERIZATION
VUNLNERABILITY OVERVIEW
SQL INJECTION [a]
Application is vulnerable to a SQL injection vulnerability by performing
database operations that were unintended by the web application designer and,
in some instances, can lead to compromise of the database server or lead to
remote code execution.
CVE-2016-4507 [b] has been assigned to this vulnerability. A CVSS v3 base score
of 6.4 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N). [c]
CROSS-SITE SCRIPTING [d]
Application fails to validate, filter, or encode user input before returning
it to a users web client.
CVE-2016-4508 [e] 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). [f]
VUNLNERABILITY DETAILS
EXPLOITABILITY
These vulnerabilities could be exploited remotely.
EXISTENCE OF EXPLOIT
No known public exploits specifically target these vulnerabilities.
DIFFICULTY
An attacker with a low skill would be able to exploit these vulnerabilities.
MITIGATION
Rexroth Bosch has created a new version of BLADEcontrol-WebVIS that can be
downloaded at
https://urldefense.proofpoint.com/v2/url?u=https-3A__webvis.bladecontrol.de&d=BQIGaQ&c=54IZrppPQZKX9mLzcGdPfFD1hxrcB__aEkJFOKJFd00&r=uwyZa8MpvYuELzcbQo3O8w&m=gdR9Hs8g1XK_6upAeFtiU1GwkZEZm9Fhf6pLZgonQWg&s=cy2NnYaA1p-d8DGzLqy1R9v9veMUdwK3KI6FuvLdW04&e=
(link is external)
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 at:
http://ics-cert.us-cert.gov/content/recommended-practices. 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
(http://ics-cert.us-cert.gov/).
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.
a. CWE-564: SQL Injection, http://cwe.mitre.org/data/definitions/564.html, web
site last accessed July 5, 2016.
b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4507, NIST
uses this advisory to create the CVE web site report. This web site will be
active sometime after publication of this advisory.
c. CVSS Calculator,
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S...,
web site last accessed July 5, 2016.
d. CWE-79: Cross-Site Scripting,
https://cwe.mitre.org/data/definitions/79.html, web site last accessed July 5,
2016.
e. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4508, NIST
uses this advisory to create the CVE web site report. This web site will be
active sometime after publication of this advisory.
f. CVSS Calculator,
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S...,
web site last accessed July 5, 2016.
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
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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