ESB-2018.0486 - [Apple iOS][Android] Schneider Electric IGSS Mobile: Multiple vulnerabilities 2018-02-19

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0486
              Schneider Electric IGSS Mobile Security Updates
                             19 February 2018

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

Product:           Schneider Electric IGSS Mobile
Publisher:         ICS-CERT
Operating System:  Apple iOS
                   Android
Impact/Access:     Provide Misleading Information -- Remote with User Interaction
                   Access Confidential Data       -- Existing Account            
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-9969 CVE-2017-9968 

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-046-03

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Advisory (ICSA-18-046-03)

Schneider Electric IGSS Mobile

Original release date: February 15, 2018

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CVSS v3 6.4

ATTENTION: Locally exploitable/low skill level to exploit.

Vendor: Schneider Electric

Equipment: IGSS Mobile

Vulnerabilities: Improper Certificate Validation, Plaintext Storage of a
Password

AFFECTED PRODUCTS

Schneider Electric reports that the vulnerabilities affect the following IGSS
Mobile products:

  o IGSS Mobile for Android, version 3.01 and all versions prior, and
  o IGSS Mobile for iOS, version 3.01 and all versions prior.

IMPACT

Successful exploitation of these vulnerabilities could allow an attacker to
execute a man-in-the-middle attack. In addition, passwords can be accessed by
unauthorized users.

MITIGATION

An update for Android with the fix for these vulnerabilities is available for
download on Google Play:

https://play.google.com/store/apps/details?id=dk.schneiderelectric.igssmobile
(link is external)

An update for iOS with the fix for these vulnerabilities is available on Apple
Store:

https://itunes.apple.com/dk/app/igss-mobile/id871698051 
(link is external)

For more information on these vulnerabilities and associated patch, please see
Schneider Electric's security notification SEVD-2018-039-02 on their website:

https://www.schneider-electric.com/en/download/document/SEVD-2018-039-02/ 
(link is external)

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
in the NCCIC Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber
Intrusion Detection and Mitigation Strategies, that is available for download
from the ICS-CERT website.

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.

In addition, NCCIC recommends that users take the following measures to protect
themselves from social engineering attacks:

  o Do not click web links or open unsolicited attachments in email messages.
  o Refer to Recognizing and Avoiding Email Scams for more information on
    avoiding email scams.
  o Refer to Avoiding Social Engineering and Phishing Attacks for more
    information on social engineering attacks.

No known public exploits specifically target these vulnerabilities.

VULNERABILITY OVERVIEW

IMPROPER CERTIFICATE VALIDATION CWE-295

IGSS Mobile app lacks certificate pinning during the TLS/SSL connection
establishing process. This issue could allow an attacker to execute a
man-in-the-middle attack.

CVE-2017-9968 has been assigned to this vulnerability. A CVSS v3 base score of
6.4 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:R/S:U/C:H
/I:H/A:N).

PLAINTEXT STORAGE OF A PASSWORD CWE-256

IGSS Mobile app passwords are stored in clear-text in the configuration file.

CVE-2017-9969 has been assigned to this vulnerability. A CVSS v3 base score of
6.0 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:H/UI:N/S:U/C:H
/I:H/A:N).

RESEARCHER

Alexander Bolshev (IOActive) and Ivan Yushkevich (Embedi) reported these
vulnerabilities to Schneider Electric.

BACKGROUND

Critical Infrastructure Sectors: Commercial Facilities, Critical Manufacturing,
Energy

Countries/Areas Deployed: Worldwide

Company Headquarters Location: France


Contact Information

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

Email: NCCICCUSTOMERSERVICE@hq.dhs.gov (link sends e-mail)
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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