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AUSCERT External Security Bulletin Redistribution
ESB-2022.2581
Advisory (icsa-22-146-01) Keysight N6854A Geolocation server
and N6841A RF Sensor software
27 May 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Keysight N6854A Geolocation server and N6841A RF Sensor software
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2022-1661 CVE-2022-1660
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-146-01
Comment: CVSS (Max): 9.8 CVE-2022-1660 (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-22-146-01)
Keysight N6854A Geolocation server and N6841A RF Sensor software
Original release date: May 26, 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: Keysight Technologies, Inc.
o Equipment: N6854A Geolocation server and N6841A RF Sensor software
o Vulnerabilities: Relative Path Traversal, Deserialization of Untrusted Data
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to
obtain arbitrary operating system files and execute arbitrary code.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following version of Keysight N6854A Geolocation and server and N6841A
Sensor software, a spectrum monitoring platform, are affected:
o Keysight N6854A and N6841A RF: Version 2.4.0 or later
3.2 VULNERABILITY OVERVIEW
3.2.1 RELATIVE PATH TRAVERSAL CWE-23
The affected products are vulnerable to directory traversal, which may allow an
attacker to obtain arbitrary operating system files.
CVE-2022-1661 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:H/I:N/A:N ).
3.2.2 DESERIALIZATION OF UNTRUSTED DATA CWE-502
The affected products are vulnerable of untrusted data due to deserialization
without prior authorization/authentication, which may allow an attacker to
remotely execute arbitrary code.
CVE-2022-1660 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 ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Transportation
Systems
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
rgod, working with Trend Micro's Zero Day Initiative, reported these
vulnerabilities to CISA.
4. MITIGATIONS
Keysight recommends users update N6854A and N6841A RF to v2.4.0 or later .
o Keysight also recommends users take the following actions to help reduce
risk:
o Block incoming connection on TCP port number defined by environment
variable KEYSIGHT_SMS_PORT (default: 8080)
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 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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