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Siemens RUGGEDCOM APE1808

Monitor6ICS-CERT ICSA-24-284-11Oct 8, 2024
Attack VectorNetwork
Auth RequiredLow
ComplexityHigh
User InteractionNone needed
Summary

Siemens RUGGEDCOM APE1808LNX devices contain an authorization flaw (CWE-863) that allows authenticated users to access functions or data they should not have permission to use. The vulnerability affects all versions of the device. Mitigation requires upgrading Nozomi Guardian/CMC (the management software) to version 24.3.1 or later and restricting device access to trusted personnel. Siemens recommends network segmentation and access controls as compensating measures.

What this means
What could happen
An attacker with login credentials could gain partial access to the device's configuration or data, potentially affecting network monitoring or control functions. Impact depends on how the device is integrated with critical operations.
Who's at risk
Manufacturing facilities using Siemens RUGGEDCOM APE1808LNX devices for industrial edge routing or network management. This device is often deployed at plant perimeter networks or between operational technology and IT networks, making it a potential stepping stone for attackers seeking to move between network segments.
How it could be exploited
An attacker would need valid login credentials to access the device over the network. Once authenticated, they could exploit a permission flaw (CWE-863) to read or modify configuration settings or access data they should not have access to based on their role.
Prerequisites
  • Valid login credentials for the device
  • Network access to the affected device on its management port
  • Knowledge of the specific permission enforcement weakness
Requires authenticationHigh attack complexityAffects network boundary protectionAll device versions vulnerableVendor indicates no firmware patch for base platform
Exploitability
Low exploit probability (EPSS 0.2%)
Affected products (2)
2 EOL
ProductAffected VersionsFix Status
RUGGEDCOM APE1808LNX CCAll versionsNo fix (EOL)
RUGGEDCOM APE1808LNXAll versionsNo fix (EOL)
Remediation & Mitigation
0/4
Do now
0/1
WORKAROUNDRestrict network access to the APE1808 management interface to trusted personnel and authorized engineering workstations only
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXUpgrade Nozomi Guardian/CMC to version 24.3.1 or later
Mitigations - no patch available
0/2
The following products have reached End of Life with no planned fix: RUGGEDCOM APE1808LNX CC, RUGGEDCOM APE1808LNX. Apply the following compensating controls:
HARDENINGPlace the device behind a firewall and isolate the network from business network segments
HARDENINGUse VPN for any required remote access to the device
View full CISA ICS-CERT advisory
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