ESB-2018.3009 - [Win] Carestream Vue RIS: Access confidential data - Remote/unauthenticated 2018-10-05

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3009
              Advisory (ICSMA-18-277-01) - Carestream Vue RIS
                              5 October 2018

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

Product:           Carestream Vue RIS
Publisher:         ICS-CERT
Operating System:  Windows 8.1
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-17891  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSMA-18-277-01

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Advisory (ICSMA-18-277-01)

Carestream Vue RIS

Original release date: October 04, 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

  o CVSS v3 3.7
  o ATTENTION: Exploitable remotely
  o Vendor: Carestream
  o Equipment: Carestream Vue RIS
  o Vulnerability: Information Exposure Through an Error Message

2. RISK EVALUATION

An attacker with access to the network of the affected system can passively
read traffic.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Carestream Vue RIS, a web-based radiology information
system, are affected:

  o RIS Client Builds: Version 11.2 and prior running on a Windows 8.1 machine
    with IIS/7.5

3.2 VULNERABILITY OVERVIEW

3.2.1    INFORMATION EXPOSURE THROUGH AN ERROR MESSAGE CWE-209

When contacting a Carestream server where there is no Oracle TNS listener
available, users will trigger an HTTP 500 error, leaking technical information
an attacker could use to initiate a more elaborate attack.

CVE-2018-17891 has been assigned to this vulnerability. A CVSS v3 base score of
3.7 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:L
/I:N/A:N).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Dan Regalado of Zingbox reported this vulnerability to NCCIC.

4. MITIGATIONS

Carestream has remediated the vulnerability in the current version of the
software and have provided the following workarounds for past versions which
are affected. Given the mitigation instructions provided, this vulnerability is
considered controlled vs. uncontrolled.

  o RIS v11.3 forward | R&D has addressed the information leakage and enabled
    SSL.
  o For RIS 11.2 running Windows 8.1 and IIS 7.2:

 1. Disable "Show debug messages."
 2. Enable SSL for client/server communications.

Please contact Carestream Support for assistance. Carestream contact
information is available at the following location:

https://www.carestream.com/en/us/medical/contact-us/world-wide-contacts.

Users can open a request through the eService portal at:
https://eservice.carestream.com.

NCCIC recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:

  o Minimize network exposure for all control system devices and/or systems,
    and ensure that they are not accessible from the Internet.
  o Locate control system networks and remote devices behind firewalls, and
    isolate them from the business network.
  o 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. High skill
level is needed to exploit.


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?

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