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AUSCERT External Security Bulletin Redistribution
ESB-2023.4068
ICS Advisory | ICSA-23-199-07 WellinTech KingHistorian
19 July 2023
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AusCERT Security Bulletin Summary
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Product: WellinTech KingHistorian
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2022-45124 CVE-2022-43663
Original Bulletin:
https://www.cisa.gov/news-events/ics-advisories/icsa-23-199-07
Comment: CVSS (Max): 8.1 CVE-2022-43663 (CVSS:3.0/AV:N/AC:H/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:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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ICS Advisory (ICSA-23-199-07)
WellinTech KingHistorian
Release Date
July 18, 2023
1. EXECUTIVE SUMMARY
o CVSS v3 8.1
o ATTENTION: Exploitable remotely/low attack complexity/public exploits are
available
o Vendor: WellinTech
o Equipment: KingHistorian
o Vulnerabilities: Exposure of Sensitive Information to an Unauthorized
Actor, Signed to Unsigned Conversion Error
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to
disclose sensitive information or send malicious data which can lead to a
buffer overflow.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of WellinTech KingHistorian, a time-series database, are
affected:
o KingHistorian: version 35.01.00.05
3.2 VULNERABILITY OVERVIEW
3.2.1 EXPOSURE OF SENSITIVE INFORMATION TO AN UNAUTHORIZED ACTOR CWE-200
An information disclosure vulnerability exists in the User authentication
functionality of WellinTech KingHistorian 35.01.00.05. A specially crafted
network packet can lead to a disclosure of sensitive information. An attacker
can sniff network traffic to leverage this vulnerability.
CVE-2022-45124 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:H/
I:N/A:N ).
3.2.2 SIGNED TO UNSIGNED CONVERSION ERROR CWE-195
An integer conversion vulnerability exists in the SORBAx64.dll RecvPacket
functionality of WellinTech KingHistorian 35.01.00.05. A specially crafted
network packet can lead to a buffer overflow. An attacker can send a malicious
packet to trigger this vulnerability.
CVE-2022-43663 has been assigned to this vulnerability. A CVSS v3 base score of
8.1 has been assigned; the CVSS vector string is ( AV:N/AC:H/PR:N/UI:N/S:U/C:H/
I:H/A:H ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: China
3.4 RESEARCHER
Carl Hurd of Cisco Talos reported this vulnerability to Talos Intelligence.
4. MITIGATIONS
WellinTech has released KingHistorian V3.52 to remediate these vulnerabilities.
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.
This product is provided subject to this Notification and this Privacy & Use
policy.
Vendor
WellinTech
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