ESB-2017.2764 - [Appliance] ABB FOX515T: Access privileged data - Existing account 2017-11-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2764
     Advisory (ICSA-17-304-01) - ABB FOX515T Improper Input Validation
                              1 November 2017

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

Product:           ABB FOX515T
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Access Privileged Data -- Existing Account
Resolution:        Alternate Program
CVE Names:         CVE-2017-14025  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-17-304-01

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Advisory (ICSA-17-304-01)

ABB FOX515T

Original release date: October 31, 2017

Legal Notice

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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 6.2

ATTENTION: Low skill level to exploit.

Vendor: ABB

Equipment: FOX515T

Vulnerability: Improper Input Validation

AFFECTED PRODUCTS

The following versions of FOX515T, a communication interface, are affected:

    FOX515T release 1.0

IMPACT

Successful exploitation of this vulnerability could allow for a local attacker
to craft a malicious script that would enable retrieval of any file on the 
server.

MITIGATION

ABB reports that the product has been phased out and has reached obsolete 
status. No further maintenance is planned for the product.

Please see the ABB Cyber Security Advisory 1KHW028693 on the ABB Alerts and 
Notification page at the following location:

http://new.abb.com/about/technology/cyber-security/alerts-and-notifications 
(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.

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 this vulnerability. This 
vulnerability is not remotely exploitable.

VULNERABILITY OVERVIEW

IMPROPER INPUT VALIDATION CWE-20

An improper input validation vulnerability has been identified, allowing a 
local attacker to provide a malicious parameter to the script that is not 
validated by the application, This could enable the attacker to retrieve any 
file on the server.

CVE-2017-14025 has been assigned to this vulnerability. A CVSS v3 base score 
of 6.2 has been assigned; the CVSS vector string is 
(AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

RESEARCHER

Ketan Bali reported the vulnerability to ABB.

BACKGROUND

Critical Infrastructure Sector(s): Communications

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Switzerland

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