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AUSCERT External Security Bulletin Redistribution
ESB-2022.2980
Advisory (icsa-22-167-08) Siemens SICAM GridEdge
17 June 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Siemens SICAM GridEdge
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2022-30231 CVE-2022-30230 CVE-2022-30229
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-167-08
Comment: CVSS (Max): 10.0 CVE-2022-30230 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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:C/C:H/I:H/A:H
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ICS Advisory (ICSA-22-167-08)
Siemens SICAM GridEdge
Original release date: June 16, 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 10.0
o ATTENTION: Exploitable remotely/low attack complexity
o Vendor: Siemens
o Equipment: SICAM GridEdge Essential ARM
o Vulnerabilities: Missing Authentication for Critical Function, Resource
Leak
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker access
to critical API functions, cross-origin resource sharing, and credentials.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following Siemens products are affected:
o SICAM GridEdge Essential ARM: All versions prior to v2.6.6
o SICAM GridEdge Essential Intel: All versions prior to v2.6.6
o SICAM GridEdge Essential with GDS ARM: All versions prior to v2.6.6
o SICAM GridEdge Essential with GDS Intel: All versions prior to v2.6.6
3.2 VULNERABILITY OVERVIEW
3.2.1 MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306
The affected software does not require authenticated access for privileged
functions. This could allow an unauthenticated attacker to change the data of a
user.
CVE-2022-30229 has been assigned to this vulnerability. A CVSS v3 base score of
9.0 has been assigned; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:C/C:H/
I:H/A:H ).
3.2.2 MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306
The affected software does not require authenticated access for privileged
functions. This could allow an unauthenticated attacker to create a new user
with administrative permissions.
CVE-2022-30230 has been assigned to this vulnerability. A CVSS v3 base score of
10.0 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:C/C:H
/I:H/A:H ).
3.2.3 TRANSMISSION OF PRIVATE RESOURCES INTO A NEW SPHERE ('RESOURCE LEAK')
CWE-402
The affected software discloses password hashes of other users upon request.
This could allow an authenticated user to retrieve another user's password
hash.
CVE-2022-30231 has been assigned to this vulnerability. A CVSS v3 base score of
4.9 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:N/S:U/C:H/
I:N/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Multiple Sectors
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Germany
3.4 RESEARCHER
Abian Blome from Siemens Energy reported these vulnerabilities to Siemens.
4. MITIGATIONS
Siemens recommends updating to the latest version of its software:
o SICAM GridEdge Essential ARM: Update to v2.6.6 or later
o SICAM GridEdge Essential Intel: Update to v2.6.6 or later
o SICAM GridEdge Essential with GDS ARM: Update to v2.6.6 or later
o SICAM GridEdge Essential with GDS Intel: Update to v2.6.6 or later
Siemens has identified the following specific workarounds and mitigations users
can apply to reduce the risk:
o Limit access to Port 8900/TCP trusted users and systems only
As a general security measure, Siemens recommends protecting network access to
devices with appropriate mechanisms. To operate the devices in a protected IT
environment, Siemens recommends configuring the environment according to
Siemens' operational guidelines for industrial security and following
recommendations in the product manuals.
Additional information on industrial security by Siemens can be found on the
Siemens industrial security webpage .
For more information see Siemens Security Advisory SSA-631336
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 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/ics 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/ics 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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