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AUSCERT External Security Bulletin Redistribution
ESB-2023.0439
Advisory (icsa-23-024-01) XINJE XD
25 January 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: XINJE XD Programing Tool
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: None
CVE Names: CVE-2021-34606 CVE-2021-34605
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-23-024-01
Comment: CVSS (Max): 7.3 CVE-2021-34606 (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/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:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
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ICS Advisory (ICSA-23-024-01)
XINJE XD
Original release date: January 24, 2023
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 7.3
o ATTENTION: Low attack complexity/public exploits are available
o Vendor: XINJE
o Equipment: XINJE XD Programing Tool
o Vulnerabilities: Relative Path Traversal, Uncontrolled Search Path Element
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to
write arbitrary project files to a programmable logic controller (PLC) and gain
code execution privileges.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of XINJE XD are affected:
o Version 3.5.1 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 RELATIVE PATH TRAVERSAL CWE-23
A zip slip vulnerability in XINJE XD/E Series PLC Program Tool up to version
v3.5.1 could provide an attacker with arbitrary file write privilege when
opening a specially crafted project file. This vulnerability can be triggered
by manually opening an infected project file, or by initiating an upload
program request from an infected Xinje PLC. This can result in remote code
execution, information disclosure, and denial-of-service of the system running
the XINJE XD/E Series PLC Program Tool.
CVE-2021-34605 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:L/UI:R/S:U/C:H/
I:H/A:H ).
3.2.2 UNCONTROLLED SEARCH PATH ELEMENT CWE-427
A vulnerability exists in XINJE XD/E Series PLC Program Tool in versions up to
v3.5.1 that could allow an authenticated local attacker to load a malicious
DLL. The potential attacker must have access to the system and sufficient
file-write privileges to successfully exploit this vulnerability. If exploited,
the attacker could place a malicious DLL file on the system, which could allow
the attacker to execute arbitrary code with the privileges of another user's
account when running the XINJE XD/E Series PLC Program Tool.
CVE-2021-34606 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:L/UI:R/S:U/C:H/
I:H/A:H ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Energy
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: China
3.4 RESEARCHER
Mashav Sapir of Claroty reported these vulnerabilities to CISA.
4. MITIGATIONS
Xinje has not responded to requests to provide mitigations for these
vulnerabilities. Users of the affected product are encouraged to contact Xinje
Technical 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 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.
CISA also recommends users take the following measures to protect themselves
from social engineering attacks:
o Do not click web links or open attachments in unsolicited email messages.
o Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
o Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
These vulnerabilities are 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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