ESB-2018.2225 - [Win] AVEVA InTouch Access Anywhere: Cross-site scripting - Remote with user interaction 2018-08-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2225
   A vulnerability has been identified in AVEVA InTouch Access Anywhere
                               1 August 2018

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

Product:           AVEVA InTouch Access Anywhere
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-9251  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-212-04

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Advisory (ICSA-18-212-04)

AVEVA InTouch Access Anywhere

Original release date: July 31, 2018

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/.

1. EXECUTIVE SUMMARY

CVSS v3 6.1

ATTENTION: Exploitable remotely/Low skill level to exploit

Vendor: AVEVA Software, LLC (AVEVA)

Equipment: InTouch Access Anywhere

Vulnerability: Cross-site Scripting

2. RISK EVALUATION

Successful exploitation of this vulnerability may allow attackers to obtain

sensitive information and/or execute Javascript or HTML code.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of InTouch Access Anywhere, remote access software, use

the vulnerable jQuery library:

2017 Update 2 and prior.

Vulnerable versions of jQuery are those prior to Version 3.0.0

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE

SCRIPTING') CWE-79

jQuery before Version 3.0.0 is vulnerable to cross-site scripting (XSS)

attacks when a cross-domain Ajax request is performed without the dataType

option, causing text/javascript responses to be executed.

CVE-2015-9251 has been assigned to this vulnerability. A CVSS v3 base score of

6.1 has been calculated; the CVSS vector string is

(AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Energy,

Food and Agriculture, and Water and Wastewater

COUNTRIES/AREAS DEPLOYED: Worldwide

COMPANY HEADQUARTERS LOCATION: United Kingdom

3.4 RESEARCHER

Googles Security Team reported this vulnerability to AVEVA, who then reported

it to NCCIC.

4. MITIGATIONS

AVEVA recommends users install update InTouch Access Anywhere 2017 Update 2b

or later, which can be downloaded from:

https://softwaresupportsp.schneider-electric.com/#/producthub/details?id=5061

(login required)

AVEVA has published Security Bulletin LFSEC00000126. It can be found at the

following location:

https://sw.aveva.com/hubfs/assets-2018/pdf/security-bulletin/SecurityBulletin_LFSec126.pdf

NCCIC recommends 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.

NCCIC reminds organizations to perform proper impact analysis and risk

assessment prior to deploying defensive measures.

NCCIC 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 on the ICS-CERT website in the Technical Information Paper,

ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation

Strategies.

Organizations observing any suspected malicious activity should follow their

established internal procedures and report their findings to NCCIC for

tracking and correlation against other incidents.

No known public exploits specifically target this vulnerability.

Contact Information

For any questions related to this report, please contact the NCCIC at:

Email: NCCICCUSTOMERSERVICE@hq.dhs.gov

Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:

http://ics-cert.us-cert.gov

or incident reporting: https://ics-cert.us-cert.gov/Report-Incident?

The NCCIC 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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