Siemens RUGGEDCOM APE1808 Devices
Plan Patch8.1ICS-CERT ICSA-23-320-14Nov 14, 2023
Attack VectorNetwork
Auth RequiredNone
ComplexityHigh
User InteractionNone needed
Summary
Siemens RUGGEDCOM APE1808 devices running Nozomi Guardian/CMC software versions before V22.6.3 and 23.1.0 contain SQL injection (CWE-89) and improper input validation (CWE-20) vulnerabilities in the web management interface. These allow an unauthenticated network attacker to potentially execute arbitrary commands, extract configuration data, or modify device settings. Siemens is preparing firmware updates but has not yet released patches for all affected products. Immediate mitigation is available through firewall access controls and network segmentation.
What this means
What could happen
An attacker with network access to the Siemens RUGGEDCOM APE1808 management interface could execute SQL injection or bypass input validation to gain unauthorized control over the device, potentially disrupting network monitoring and switching operations in manufacturing plants.
Who's at risk
Manufacturing plants using Siemens RUGGEDCOM APE1808 network appliances, particularly those running older versions of Nozomi Guardian/CMC software. These devices manage network switching and monitoring in industrial environments, so vulnerabilities could affect critical process networks.
How it could be exploited
An attacker on the network sends a crafted request with SQL injection payloads (CWE-89) or malformed input (CWE-20) to the web management interface of the RUGGEDCOM APE1808. If successful, the attacker could extract data, modify configurations, or execute administrative commands without authentication.
Prerequisites
- Network access to the web management interface port on RUGGEDCOM APE1808
- Device running Nozomi Guardian/CMC software version prior to V22.6.3 or 23.1.0
- No valid authentication credentials required
Remotely exploitableNo authentication requiredNo patch available for RUGGEDCOM APE1808 devicesHigh CVSS score (8.1)Input validation bypass possible
Exploitability
Low exploit probability (EPSS 0.1%)
Affected products (1)
ProductAffected VersionsFix Status
RUGGEDCOM APE1808<with Nozomi Guardian / CMC V22.6.3 or 23.1.0No fix yet
Remediation & Mitigation
0/5
Do now
0/2WORKAROUNDUse internal firewall rules to restrict network access to the web management interface
WORKAROUNDMonitor IDS logs for abnormal device stops and restarts that may indicate exploitation attempts
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXUpgrade Nozomi Guardian/CMC firmware to version 22.6.3 or 23.1.0 or later
Long-term hardening
0/2HARDENINGImplement network segmentation to isolate RUGGEDCOM APE1808 devices from business networks and the internet
HARDENINGConfigure VPN for any required remote access to the device management interface
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API:
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