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AUSCERT External Security Bulletin Redistribution
ESB-2019.3886.2
Advisory (icsa-19-290-01): AVEVA Vijeo Citect and Citect SCADA
20 December 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Vijeo Citect
Vijeo Citect SCADA
Schneider Electric's Power SCADA Operation
Publisher: ICS-CERT
Operating System: Network Appliance
Windows
Impact/Access: Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-13537
Original Bulletin:
https://www.us-cert.gov/ics/advisories/icsa-19-290-01
Revision History: December 20 2019: Updated for the product Schneider
Electric's Power SCADA Operation
October 18 2019: Initial Release
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ICS Advisory (ICSA-19-290-01)
AVEVA Vijeo Citect and Citect SCADA (Update A)
Original release date: December 19, 2019
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 7.5
o ATTENTION: Exploitable remotely/low skill level to exploit
- --------- Begin Update A Part 1 of 5 ---------
o Vendor: AVEVA and Schneider Electric
o Equipment: AVEVA's Vijeo Citect and Citect SCADA; Schneider Electric's
Power SCADA Operation
- --------- End Update A Part 1 of 5 ---------
o Vulnerability: Stack-based Buffer Overflow
2. UPDATE INFORMATION
This updated advisory is a follow-up to the original advisory titled
"ICSA-19-290-01 AVEVA Vijeo Citect and Citect SCADA" that was published October
17, 2019, on the ICS webpage on us-cert.gov.
3. RISK EVALUATION
- --------- Begin Update B Part 2 of 5 ---------
The IEC870IP driver for AVEVA's Vijeo Citect and Citect SCADA and Schneider
Electric's Power SCADA Operation has a buffer overflow vulnerability that could
result in a server-side crash.
- --------- End Update B Part 2 of 5 ---------
4. TECHNICAL DETAILS
4.1 AFFECTED PRODUCTS
- --------- Begin Update B Part 3 of 5 ---------
The following versions of the IEC870IP driver used in AVEVA's Vijeo Citect and
Citect SCADA and Schneider Electric's Power SCADA Operation are affected:
o IEC870IP driver v4.14.02 and prior
- --------- End Update B Part 3 of 5 ---------
4.2 VULNERABILITY OVERVIEW
4.2.1 STACK-BASED BUFFER OVERFLOW CWE-121
- --------- Begin Update B Part 4 of 5 ---------
The IEC870IP driver for AVEVA's Vijeo Citect, Citect SCADA, and Schneider
Electric's Power SCADA Operation has a buffer overflow that could result in a
server-side crash. This vulnerability impacts only the IEC870IP driver and not
the core Vijeo Citect, Citect SCADA, or Power SCADA Operation software.
- --------- End Update B Part 4 of 5 ---------
CVE-2019-13537 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:N/I:N/A:H ).
4.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Energy
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: France
4.4 RESEARCHER
VAPT Team, C3i Center, IIT Kanpur, India reported this vulnerability to AVEVA.
5. MITIGATIONS
Vijeo Citect and Citect SCADA users using the IEC870IP driver v4.14.02 and
prior are affected and should upgrade to the IEC870IP driver v4.15.00 (sign in
required) as soon as possible.
For addition information please see AVEVA Security Bulletin LFSEC00000139 .
For information on how to reach AVEVA support, please refer to this link (sign
in required): AVEVA Software Global Customer Support .
- --------- Begin Update B Part 5 of 5 ---------
Power SCADA Operation users of the IEC870IP driver v4.14.02 and prior are
affected and should upgrade to the IEC870IP driver v4.15.00 as soon as
possible.
For additional information please see Schneider Electric's security
notification SEVD-2019-344-04 .
For further information related to cybersecurity in Schneider Electric's
products, please visit the company's cybersecurity webpage at: Schneider
Electric Cybersecurity .
- --------- End Update B Part 5 of 5 ---------
CISA 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.
CISA reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices
on the ICS webpage on us-cert.gov . 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 webpage on us-cert.gov 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 CISA for tracking
and correlation against other incidents.
No known public exploits specifically target this vulnerability.
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