Siemens RUGGEDCOM APE1808 Devices: CVSS (Max): 10.0
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AUSCERT External Security Bulletin Redistribution
ESB-2024.2586
ICS Advisory | ICSA-24-116-03 Siemens RUGGEDCOM APE1808 Devices Configured
with Palo Alto Networks Virtual NGFW
26 April 2024
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AusCERT Security Bulletin Summary
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Product: Siemens RUGGEDCOM APE1808 Devices
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Mitigation
CVE Names: CVE-2024-3400
Original Bulletin:
https://www.cisa.gov/news-events/ics-advisories/icsa-24-116-03
Comment: CVSS (Max): 10.0 CVE-2024-3400 (CVSS:3.1/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/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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ICS Advisory (ICSA-24-116-03)
Siemens RUGGEDCOM APE1808 Devices Configured with Palo Alto Networks Virtual
NGFW
Release Date
April 25, 2024
As of January 10, 2023, CISA will no longer be updating ICS security advisories
for Siemens product vulnerabilities beyond the initial advisory. For the most
up-to-date information on vulnerabilities in this advisory, please see Siemens’
ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
1. EXECUTIVE SUMMARY
o CVSS v4 10.0
o ATTENTION : Exploitable remotely/low attack complexity
o Vendor : Siemens
o Equipment : RUGGEDCOM APE1808
o Vulnerability : Command Injection
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to
execute arbitrary code with root privileges.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Siemens RUGGEDCOM APE1808, an application hosting
platform, are affected:
o RUGGEDCOM APE1808: All versions with Palo Alto Networks Virtual NGFW
configured with GlobalProtect gateway or GlobalProtect portal (or both).
3.2 Vulnerability Overview
3.2.1 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN A COMMAND (‘COMMAND
INJECTION’) CWE-77
A command injection as a result of arbitrary file creation vulnerability in the
GlobalProtect feature of Palo Alto Networks PAN-OS software for specific PAN-OS
versions and distinct feature configurations may enable an unauthenticated
attacker to execute arbitrary code with root privileges on the firewall.
CVE-2024-3400 has been assigned to this vulnerability. A CVSS v3.1 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 ).
A CVSS v4 score has also been calculated for CVE-2024-3400 . A base score of
10.0 has been calculated; the CVSS vector string is ( CVSS4.0/AV:N/AC:L/AT:N/
PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Germany
3.4 RESEARCHER
Siemens reported this vulnerability to CISA.
4. MITIGATIONS
Siemens has identified the following specific workarounds and mitigations users
can apply to reduce risk:
RUGGEDCOM APE1808:
o Contact customer support to receive patch and update information.
o Disable GlobalProtect gateway and GlobalProtect portal; note that these
features are disabled by default in RUGGEDCOM APE1808 deployments.
o Customers with a Threat Prevention subscription can block attacks for this
vulnerability using Threat IDs 95187, 95189, and 95191 (available in
Applications and Threats content version 8836-8695 and later). For further
instruction see Palo Alto Network’s upstream notification ( https://
security.paloaltonetworks.com/CVE-2024-3400 ).
As a general security measure, Siemens recommends protecting network access to
devices with appropriate mechanisms. To operate the devices in a protected IT
environment, Siemens recommends configuring the environment according to
Siemens’ operational guidelines for industrial security and following
recommendations in the product manuals.
Additional information on industrial security by Siemens can be found on the
Siemens industrial security webpage .
For more information see the associated Siemens security advisory SSA-750274 in
HTML and CSAF .
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability, such as:
o Minimize network exposure for all control system devices and/or systems,
ensuring they are not accessible from the internet .
o Locate control system networks and remote devices behind firewalls and
isolating them from business networks.
o When remote access is required, use more 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 the 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/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 .
CISA encourages organizations to implement recommended cybersecurity strategies
for proactive defense of ICS assets .
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 exploitation specifically targeting this vulnerability has been
reported to CISA at this time.
5. UPDATE HISTORY
o April 25, 2024: Initial Publication
This product is provided subject to this Notification and this Privacy & Use
policy.
Vendor
Siemens
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