ESB-2018.2741 - [Android] Honeywell Mobile Computers: Root compromise - Remote with user interaction 2018-09-14

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2741
         Advisory (ICSA-18-256-01) Honeywell Mobile Computers with
                         Android Operating Systems
                             14 September 2018

===========================================================================

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

Product:           Honeywell Mobile Computers
Publisher:         ICS-CERT
Operating System:  Android
Impact/Access:     Root Compromise -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-14825  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-256-01

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Advisory (ICSA-18-256-01)
Honeywell Mobile Computers with Android Operating Systems

Original release date: September 13, 2018

Legal Notice

All information products included in http://ics-cert.us-cert.gov are
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information contained within. DHS does not endorse any commercial product or
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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 7.6
  o ATTENTION: Exploitable remotely
  o Vendor: Honeywell
  o Equipment: Mobile Computers
  o Vulnerability: Improper Privilege Management

2. RISK EVALUATION

A vulnerability in a system service on CT60, CN80, CT40, CK75, CN75, CT50,
D75e, CN51, and EDA series mobile computers running the Android Operating
System (OS) could allow a malicious third-party application to gain elevated
privileges.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Honeywell Mobile Computers (hand-held computers) are
affected:

  o CT60 running Android OS 7.1,
  o CN80 running Android OS 7.1,
  o CT40 running Android OS 7.1,
  o CK75 running Android OS 6.0,
  o CN75 running Android OS 6.0,
  o CN75e running Android OS 6.0,
  o CT50 running Android OS 6.0,
  o D75e running Android OS 6.0,
  o CT50 running Android OS 4.4,
  o D75e running Android OS 4.4,
  o CN51 running Android OS 6.0,
  o EDA50k running Android 4.4,
  o EDA50 running Android OS 7.1,
  o EDA50k running Android OS 7.1,
  o EDA70 running Android OS 7.1,
  o EDA60k running Android OS 7.1, and
  o EDA51 running Android OS 8.1

3.2 VULNERABILITY OVERVIEW

3.2.1    IMPROPER PRIVILEGE MANAGEMENT CWE-269

A skilled attacker with advanced knowledge of the target system could exploit
this vulnerability by creating an application that would successfully bind to
the service and gain elevated system privileges. This could enable the
attacker to obtain access to keystrokes, passwords, personal identifiable
information, photos, emails, or business-critical documents.

CVE-2018-14825 has been assigned to this vulnerability. A CVSS v3 base score
of 7.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U
/C:L/I:L/A:H).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Critical
    Manufacturing, Energy, Healthcare and Public Health
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Google's Android Team, in coordination with Honeywell, reported this
vulnerability to NCCIC.

4. MITIGATIONS

Honeywell has released software updates that resolve this vulnerability. All
users using the impacted products should update their products as indicated
below. Only products listed below are affected by this vulnerability.

Honeywell strongly recommends that users upgrade to the version identified
below to resolve the vulnerability.

Updates are available at https://hsmftp.honeywell.com or from Honeywell
through product support.

  o CT60 running Android OS 7.1 - (GMS version) Upgrade to Android OS release
    84.00.11 or later; (non-GMS version) Upgrade to Android OS release
    83.00.11 or later
  o CN80 running Android OS 7.1 - (GMS version) Upgrade to Android OS release
    84.00.11 or later; (non-GMS version) Upgrade to Android OS release
    83.00.11 or later
  o CT40 running Android OS 7.1 - (GMS version) Upgrade to Android OS release
    84.00.11 or later; (non-GMS version) Upgrade to Android OS release
    83.00.11 or later
  o CK75 running Android OS 6.0 - Update CommonES to 4.02.00.4082 or later;
    Update ECP to Version 2.30.00.0167 or later (if applicable)
  o CN75 running Android OS 6.0 - Update CommonES to 4.02.00.4082 or later;
    Update ECP to Version 2.30.00.0167 or later (if applicable)
  o CN75e running Android OS 6.0 - Update CommonES to 4.02.00.4082 or later;
    Update ECP to Version 2.30.00.0167 or later (if applicable)
  o CT50 running Android OS 6.0 - Update to CommonES 4.01.00.4134 or later;
    Update ECP to Version 2.30.00.0167 or later (if applicable)
  o D75e running Android OS 6.0 - Update to CommonES 4.01.00.4134 or later;
    Update ECP to Version 2.30.00.0167 or later (if applicable)
  o CT50 running Android OS 4.4 - Update to CommonES 3.17.3445 or later
  o D75e running Android OS 4.4 - Update to CommonES 3.17.3445 or later
  o CN51 running Android OS 6.0 - Update to CommonES 4.01.03.3992 or later;
    Update ECP to Version 2.30.00.0167 or later (if applicable)
  o EDA50k running Android OS 4.4 - Update to CommonES 3.17.3321.10 or later,
    release will be available: 9/21/2018
  o EDA50 running Android OS 7.1 - Update to CommonES 5.01.01.4217 or later,
    release will be available: 9/17/2018
  o EDA50k running Android OS 7.1  - Update to CommonES 5.01.01.4217 or later,
    release will be available: 9/17/2018
  o EDA70 running Android OS 7.1 - Update to CommonES 5.01.01.4217 or later,
    release will be available: 9/17/2018
  o EDA60k running Android OS 7.1 - (non-GMS) Upgrade to Android OS release
    206.01.00.0018 or later; Update ECP to Version 2.30.00.0167 or later,
    release will be available: 9/17/2018
  o EDA51 running Android OS 8.1 - Update to CommonES 6.02.01.4593, release
    will be available: 9/17/2018

Honeywell always recommends the whitelisting of trusted applications to limit
risk from malicious apps being installed on the device. Please see the Android
Network and Security Guide for additional information:

https://www.honeywellaidc.com/en/-/media/en/files-public/
technical-publications/multi-product/ALLSKU-AND-ENUS-ZY.pdf

For assistance with this vulnerability, please contact Honeywell through
product support.

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.

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