Digi ConnectPort X2D: CVSS (Max): 10.0

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                         ZMCIRT Vulnerability Bulletin

                             ZMC-2022.08.08.0800
                    Digi ConnectPort X2D: CVSS (Max): 10.0
                               8th August 2022

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Product:           Digi ConnectPort X2D
Publisher:         ICS-CERT
Operating System:  Network Appliance
Resolution:        Mitigation
CVE Names:         CVE-2022-2634  

Original Bulletin: 
   https://us-cert.cisa.gov/ics/advisories/icsa-22-216-01

Comment: CVSS (Max):  10.0 CVE-2022-2634 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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:C/C:H/I:H/A:H

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ICS Advisory (ICSA-22-216-01)

Digi ConnectPort X2D

Original release date: August 04, 2022

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1. EXECUTIVE SUMMARY

  o CVSS v3 10.0
  o ATTENTION: Exploitable remotely/low attack complexity
  o Vendor: Digi International, Inc.
  o Equipment: ConnectPort X2D Gateway
  o Vulnerability: Execution with Unnecessary Privileges

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to
execute malicious actions resulting in code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Digi products are affected:

  o Digi ConnectPort X2D Gateway: All firmware versions in devices manufactured
    prior to January 2020

3.2 VULNERABILITY OVERVIEW

3.2.1 EXECUTION WITH UNNECESSARY PRIVILEGES CWE-250

An attacker may be able to execute malicious actions due to the lack of device
access protections and device permissions when using the web application. This
could lead to uploading python files which can be later executed.

CVE-2022-2634 has been assigned to this vulnerability. A CVSS v3 base score of
10.0 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:C/
C:H/I:H/A:H ).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Multiple Sectors
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Aaron Flecha of S21sec reported this vulnerability to CISA.

4. MITIGATIONS

Digi International indicated this vulnerability does not exist in ConnectPort
gateways manufactured after January 2020. It is recommended to contact Digi
International support for assistance with impacted devices manufactured prior
to January 2020.

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 this vulnerability.

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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