Siemens RUGGEDCOM APE 1808
Monitor7.5ICS-CERT ICSA-24-193-02Jul 9, 2024
Attack VectorNetwork
Auth RequiredNone
ComplexityHigh
User InteractionRequired
Summary
Siemens RUGGEDCOM APE1808 contains vulnerabilities related to FortiGate NGFW security issues, including buffer overflow (CWE-121), session fixation (CWE-384), authentication bypass (CWE-306), unsafe input handling (CWE-79), and information disclosure (CWE-532). The vulnerabilities are inherited from FortiOS and affect all versions of the RUGGEDCOM APE1808. Siemens recommends updating to the latest FortiGate NGFW version and implementing upstream Fortinet workarounds.
What this means
What could happen
An attacker with network access to the RUGGEDCOM APE1808 could execute code remotely, potentially modifying network device settings, intercepting traffic, or disrupting connectivity for critical manufacturing control systems. The device may also leak sensitive configuration or credential information.
Who's at risk
Manufacturing facilities using Siemens RUGGEDCOM APE1808 as a hardened edge firewall or network appliance should be concerned. This includes plants relying on the APE1808 for segmentation between IT networks and industrial control system networks, as well as sites using it for remote access to manufacturing equipment.
How it could be exploited
An attacker on the network can send specially crafted requests to the RUGGEDCOM APE1808's web interface or network services to trigger buffer overflows, bypass authentication, or exploit input validation flaws. User interaction (like clicking a malicious link) may be required for some attack vectors. Successful exploitation could allow remote code execution on the firewall appliance.
Prerequisites
- Network access to RUGGEDCOM APE1808 (port 80, 443, or other FortiGate service ports)
- For some vectors: user interaction (e.g., clicking a link or opening a crafted file)
- Device must be running a vulnerable version of FortiGate NGFW firmware
remotely exploitableaffects network security appliance (critical for ICS isolation)multiple CWEs including buffer overflow and authentication bypasslow EPSS score but high CVSS indicates potential for significant impactno patch currently available from Siemens
Exploitability
Moderate exploit probability (EPSS 4.9%)
Affected products (1)
ProductAffected VersionsFix Status
RUGGEDCOM APE1808All versionsNo fix yet
Remediation & Mitigation
0/5
Do now
0/2WORKAROUNDImplement Fortinet upstream security workarounds referenced in Fortinet security advisories until patched firmware is available
WORKAROUNDRestrict network access to RUGGEDCOM APE1808 management interfaces (web, SSH) to authorized administrative systems only
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXContact Siemens customer support to obtain and schedule deployment of patched FortiGate NGFW firmware for RUGGEDCOM APE1808
Long-term hardening
0/2HARDENINGIsolate RUGGEDCOM APE1808 behind an additional firewall layer; do not expose to the internet
HARDENINGImplement network segmentation to ensure the APE1808 separates business IT networks from manufacturing control networks with no direct cross-communication
CVEs (14)
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API:
/api/v1/advisories/5e477399-4825-4408-aa71-16d63e0db110