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AUSCERT External Security Bulletin Redistribution
ESB-2022.1704
Advisory (icsa-22-109-05) Elcomplus SmartPPT SCADA Server
20 April 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Elcomplus SmartPPT SCADA Server
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2021-43938 CVE-2021-43937 CVE-2021-43934
CVE-2021-43932 CVE-2021-43930
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-109-05
Comment: CVSS (Max): 9.8 CVE-2021-43932 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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ICS Advisory (ICSA-22-109-05)
Elcomplus SmartPPT SCADA Server
Original release date: April 19, 2022
Legal Notice
All information products included in https://us-cert.cisa.gov/ics 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 https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 9.8
o ATTENTION: Exploitable remotely/low attack complexity
o Vendor: Elcomplus
o Equipment: SmartPPT SCADA Server
o Vulnerabilities: Cross-site Scripting, Unauthorized Exposure to Sensitive
Information, Unrestricted Upload of File with Dangerous Type, Path
Traversal, Cross-site Request Forgery
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an unauthorized
user to store dangerous data in a trusted database; potentially exposing
sensitive information; allow malicious users to upload arbitrary files; provide
attackers a way to traverse the file system to access files or directories that
are outside of the restricted directory; or result in exposure of data or
unintended code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following version of SmartPPT SCADA Server, an integrated voice and data
dispatch software, is affected:
o SmartPPT SCADA Server v1.4
3.2 VULNERABILITY OVERVIEW
3.2.1 CROSS-SITE SCRIPTING CWE-79
An authenticated attacker can inject arbitrary JavaScript into critical
parameters.
CVE-2021-43932 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:H/I:H/A:H ).
3.2.2 INFORMATION EXPOSURE CWE-200
An unauthenticated user can request various files from the server without any
authentication or authorization.
CVE-2021-43938 has been assigned to this vulnerability. A CVSS v3 base score of
8.1 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:U/
C:H/I:H/A:H ).
3.2.3 UNRESTRICTED UPLOAD OF FILE WITH DANGEROUS TYPE CWE-434
The server has a feature that allows the upload of application updates;
however, validation is not required, which enables malicious users to upload
arbitrary files.
CVE-2021-43934 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:H/I:H/A:H ).
3.2.4 PATH TRAVERSAL CWE-35
The software uses external input to construct a pathname that should be within
a restricted directory, but it does not properly neutralize dot slash sequences
that can resolve to a location that is outside of that directory.
CVE-2021-43930 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:H/I:H/A:H ).
3.2.5 CROSS-SITE REQUEST FORGERY CWE-352
The web application does not, or cannot, sufficiently verify whether a
well-formed, valid, consistent request was intentionally provided by the user
who submitted the request.
CVE-2021-43937 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:L/UI:N/S:U/
C:H/I:L/A:L ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Communications
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Russia
3.4 RESEARCHER
Michael Heinzl reported these vulnerabilities to CISA.
4. MITIGATIONS
Elcomplus has released an update to fix these vulnerabilities and recommends
users upgrade to Version 2.3.4 or later .
For more information, please contact Elcomplus support .
CISA recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:
o Minimize network exposure for all control system devices and/or systems,
and ensure 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 VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize VPN is only
as secure as its 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 cisa.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 cisa.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 these vulnerabilities.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA 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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