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AUSCERT External Security Bulletin Redistribution
ESB-2018.2552
Advisory (ICSA-18-240-03)
29 August 2018
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AusCERT Security Bulletin Summary
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Product: Schneider Electric PowerLogic PM5560
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-7795
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-18-240-03
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Advisory (ICSA-18-240-03)
Schneider Electric PowerLogic PM5560
Original release date: August 28, 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 8.2
o ATTENTION: Exploitable remotely/low skill level to exploit
o Vendor: Schneider Electric
o Equipment: PowerLogic PM5560
o Vulnerability: Cross-site Scripting
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow user input to be
manipulated, allowing for remote code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of PowerLogic PM5560, a power management system, are
affected:
o PowerLogic PM5560 all versions prior to firmware Version 2.5.4
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION
('CROSS-SITE SCRIPTING') CWE-79
The PowerLogic PM5560 product is susceptible to cross-site scripting attack on
its web browser. An attacker may be able to manipulate inputs to cause
execution of java script code.
CVE-2018-7795 has been assigned to this vulnerability. A CVSS v3 base score of
8.2 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Energy
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: France
3.4 RESEARCHER
Schneider Electric, working with Ezequiel Fernandez and Bertin Jose, reported
this vulnerability to NCCIC.
4. MITIGATIONS
Schneider Electric has released a fix to address this vulnerability:
https://www.schneider-electric.com/en/download/document/PM5560_PM5563_V2.5.4_Release/
For more information please see the Schneider Electric security notification
at:
https://www.schneider-electric.com/en/download/document/SEVD-2018-228-01/
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.
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?
The NCCIC continuously strives to improve its products and services. You can
help by choosing one of the links below to provide feedback about this product.
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