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TLP:WHITE

Advisory (ICSA-17-180-02)

Schneider Electric U.motion Builder

Original release date: June 29, 2017

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CVSS v3 9.8

ATTENTION: Remotely exploitable/low skill level to exploit. Public exploits are available.

Vendor: Schneider Electric

Equipment: U.motion Builder

Vulnerabilities: SQL Injection, Path Traversal, Improper Authentication, Use of Hard-Coded Password, Improper Access Control, Denial of Service, Information Disclosure

AFFECTED PRODUCTS

The following U.motion Builder Software versions are affected:

  • U.motion Builder Versions 1.2.1 and prior.

IMPACT

A successful exploit of these vulnerabilities could allow an attacker to execute arbitrary commands or compromise the confidentiality, integrity, and availability of the system.

MITIGATION

Schneider Electric says a firmware update, which includes fixes for these vulnerabilities, is scheduled for availability to download by the end of August. When available, it is highly recommended that U.motion Builder users apply the patch in a timely manner.

Schneider Electric’s security notice SEVD-2017-178-01 is available at the following location:

http://www.schneider-electric.com/en/download/document/SEVD-2017-178-01/

NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 ICS‑CERT 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.

VULNERABILITY OVERVIEW

Unauthenticated users can use calls to various paths in order to perform arbitrary SQL statements against the underlying database.

CVE-2017-7973 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Unauthenticated users can execute arbitrary code and exfiltrate files.

CVE-2017-7974 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

The system includes a hard-coded valid session. If an attacker uses that session ID as part of the HTTP cookie of a web request, then authentication is bypassed.

CVE-2017-9956 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

The system comes with a system web access account hard-coded.

CVE-2017-9957 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

Improper handling of the system configuration can allow an attacker to execute arbitrary code under the context of root.

CVE-2017-9958 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).

The system accepts reboot in session from unauthenticated user causing a denial of service.

CVE-2017-9959 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

The system returns more information than should be passed to an unauthenticated caller who might be an attacker.

CVE-2017-9960 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

RESEARCHER

rgod working with Trend Micro’s Zero Day Initiative identified these vulnerabilities.

BACKGROUND

Critical Infrastructure Sectors: Commercial Facilities, Critical Manufacturing, and Energy

Countries/Areas Deployed: United States, Europe, and Asia

Company Headquarters Location: Paris, France


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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