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AUSCERT External Security Bulletin Redistribution
ESB-2021.2280
Advisory (icsa-21-180-06) Claroty Secure Remote Access Site
30 June 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Claroty Secure Remote Access Site
Publisher: ICS-CERT
Operating System: Network Appliance
Linux variants
Impact/Access: Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-32958
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-21-180-06
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ICS Advisory (ICSA-21-180-06)
Claroty Secure Remote Access Site
Original release date: June 29, 2021
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 5.5
o ATTENTION: Low attack complexity
o Vendor: Claroty
o Equipment: Secure Remote Access (SRA) Site
o Vulnerability: Authentication Bypass Using an Alternate Path or Channel
2. RISK EVALUATION
Successful exploitation of this vulnerability enables an attacker with local
(Linux) system access to bypass access controls for the central configuration
file of the SRA Site software.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of SRA are affected:
o Versions 3.0 through 3.2
3.2 VULNERABILITY OVERVIEW
3.2.1 AUTHENTICATION BYPASS USING AN ALTERNATE PATH OR CHANNEL CWE-288
Successful exploitation of this vulnerability allows an attacker with local
command line interface access to gain the secret key, subsequentially allowing
them to generate valid session tokens for the web user interface (UI). With
access to the web UI an attacker can access assets managed by the SRA
installation and could compromise the installation.
CVE-2021-32958 has been assigned to this vulnerability. A CVSS v3 base score
5.5 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:L/UI:N/S:U/
C:H/I:N/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Energy, Healthcare
and Public Health, Water and Wastewater Systems
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Alphastrike Labs reported this vulnerability to Claroty.
4. MITIGATIONS
Claroty recommends users upgrade their SRA installation to Version 3.2.1
(released April 27, 2021). Users unable to apply the latest patch should
restrict non-admin access to the system hosting the SRA Site software as an
interim mitigation.
Users may contact either Claroty Support or a Customer Success Manager to
obtain the latest release of SRA, which includes the fix to this vulnerability
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.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 us-cert.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 this vulnerability. This
vulnerability is not exploitable remotely.
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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