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AUSCERT External Security Bulletin Redistribution
ESB-2022.5426
Advisory (icsa-22-300-03) Rockwell Automation Stratix
Devices Containing Cisco IOS
28 October 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Rockwell Automation Stratix Devices
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2021-1446 CVE-2021-1385 CVE-2020-3516
CVE-2020-3229 CVE-2020-3219 CVE-2020-3218
CVE-2020-3211 CVE-2020-3209 CVE-2020-3200
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-300-03
Comment: CVSS (Max): 8.8 CVE-2020-3229 (CVSS:3.0/AV:N/AC:L/PR:L/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:L/UI:N/S:U/C:H/I:H/A:H
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ICS Advisory (ICSA-22-300-03)
Rockwell Automation Stratix Devices Containing Cisco IOS
Original release date: October 27, 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 8.8
o ATTENTION: Exploitable remotely/low attack complexity
o Vendor: Rockwell Automation
o Equipment: Stratix Devices
o Vulnerabilities: Incorrect Authorization, Improper Input Validation,
Improper Check for Unusual or Exceptional Conditions, Interpretation
Conflict, OS Command Injection, Improper Verification of Cryptographic
Signature, Path Traversal
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could lead to a
denial-of-service condition and allow remote code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Stratix Devices, industrial ethernet switches, and
the contained Cisco software are affected:
Cisco IOS XE and Cisco IOS software contained in:
o Stratix 5800 switches: All versions prior to v16.12.01
o Stratix 5400/5410 switches: All versions prior to v15.2(7)E2 (CVE-2020-3200
only)
3.2 VULNERABILITY OVERVIEW
3.2.1 INCORRECT AUTHORIZATION CWE-863
The administrator graphical user interface (GUI) lacks correct handling of
RBAC, which may allow a malicious user to send modified HTTP requests to the
targeted device. If exploited, a read-only remote attacker could potentially
execute commands or configuration changes as the administrator.
CVE-2020-3229 has been assigned to this vulnerability. A CVSS v3 base score of
8.8 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/C:H/
I:H/A:H ).
3.2.2 IMPROPER INPUT VALIDATION CWE-20
Due to insufficient validation of user input, this vulnerability could allow a
malicious user to inject custom input into the web user interface. If
exploited, a remote attacker could potentially execute arbitrary code with
administrative privileges on the operating system.
CVE-2020-3219 has been assigned to this vulnerability. A CVSS v3 base score of
8.8 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/C:H/
I:H/A:H ).
3.2.3 IMPROPER CHECK FOR UNUSUAL OR EXCEPTIONAL CONDITIONS CWE-754
A vulnerability in the DNS application layer gateway (ALG) functionality used
by Network Address Translation (NAT) in Cisco IOS XE software could allow an
unauthenticated, remote attacker to reload an affected device.
CVE-2021-1446 has been assigned to this vulnerability. A CVSS v3 base score of
8.6 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:C/C:N/
I:N/A:H ).
3.2.4 INTERPRETATION CONFLICT CWE-436
A vulnerability in the Secure Shell (SSH) server code of Cisco IOS software and
Cisco IOS XE software could allow an authenticated, remote attacker to reload
an affected device.
CVE-2020-3200 has been assigned to this vulnerability. A CVSS v3 base score of
7.7 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:C/C:N/
I:N/A:H ).
3.2.5 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND ('OS
COMMAND INJECTION') CWE-78
Due to improper input sanitization, this vulnerability could allow a malicious
user with administrative privileges to submit specially crafted input in the
web user interface. If exploited, a remote attacker could potentially execute
arbitrary commands with root privileges on the operating system.
CVE-2020-3211 has been assigned to this vulnerability. A CVSS v3 base score of
7.2 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:N/S:U/C:H/
I:H/A:H ).
3.2.6 IMPROPER INPUT VALIDATION CWE-20
Due to improper validation of user supplied input, a malicious user could
potentially create a file on the target device and upload a second malicious
file to the device. If exploited, a user could execute arbitrary code with root
privileges on the underlying Linux shell.
CVE-2020-3218 has been assigned to this vulnerability. A CVSS v3 base score of
7.2 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:N/S:U/C:H/
I:H/A:H ).
3.2.7 IMPROPER VERIFICATION OF CRYPTOGRAPHIC SIGNATURE CWE-347
During the initial boot process, there is an improper check on the area code
managing the verification of the digital signatures of the system files. If
exploited, a malicious user could potentially install and boot malicious
software images or execute unsigned binaries on the targeted device. A
malicious user could exploit this vulnerability by loading unsigned software on
the affected device.
CVE-2020-3209 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been assigned; the CVSS vector string is ( AV:P/AC:L/PR:N/UI:N/S:U/C:H/
I:H/A:H ).
3.2.8 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY ('PATH
TRAVERSAL') CWE-22
A vulnerability in the Cisco IOx application hosting environment of multiple
Cisco platforms could allow an authenticated, remote attacker to conduct
directory traversal attacks and read and write files on the underlying
operating system or host system.
CVE-2021-1385 has been assigned to this vulnerability. A CVSS v3 base score of
6.5 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:N/S:U/C:H/
I:H/A:N ).
3.2.9 IMPROPER INPUT VALIDATION CWE-20
A vulnerability in the web server authentication of Cisco IOS XE Software could
allow an authenticated, remote attacker to crash the web server on the device.
CVE-2020-3516 has been assigned to this vulnerability. A CVSS v3 base score of
4.3 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/C:N/
I:N/A:L ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Multiple
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Rockwell Automation reported these vulnerabilities to CISA.
4. MITIGATIONS
Rockwell Automation has addressed these vulnerabilities updates and encourages
users to combine these updates with Rockwell Automation's Security Best
Practices :
o Stratix 5800 switches (All listed vulnerabilities except CVE-2020-3200):
Update to Stratix 5800 v17.04.01 or later
o Stratix 5800 switches (CVE-2020-3200): Update to v16.12.01 or later
o Stratix 5400/5410 switches (CVE-2020-3200 only): Update to v15.2(7)E2 or
later
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability 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 business networks.
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 at cisa.gov/ics . Several CISA products detailing cyber
defense best 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 at cisa.gov/ics in the technical information paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .
Organizations observing suspected malicious activity should follow established
internal procedures and report 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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