OTPulse

Siemens Insights Hub Private Cloud

Act NowCVSS 9.8ICS-CERT ICSA-25-100-05Apr 8, 2025
Siemens
Attack path
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

Insights Hub Private Cloud contains multiple vulnerabilities in the Ingress NGINX Controller for Kubernetes that could lead to arbitrary code execution within the ingress-nginx controller context, disclosure of Kubernetes Secrets accessible to the controller, or denial of service. The vulnerabilities affect all versions of the product and are related to input validation (CWE-20) and improper restriction of rendered UI layers (CWE-653).

What this means
What could happen
An attacker with network access to the Insights Hub Private Cloud instance could execute arbitrary code on the Kubernetes ingress controller, potentially gaining control of the cluster, accessing sensitive credentials stored as Kubernetes Secrets, or disrupting availability of the platform and dependent operations.
Who's at risk
Organizations running Siemens Insights Hub Private Cloud deployments should prioritize this update. This affects any facility using Insights Hub for cloud-based industrial data management, analytics, or edge computing integration, particularly those with internet-facing or DMZ-deployed instances.
How it could be exploited
An attacker with network access to the Insights Hub Private Cloud ingress service exploits input validation flaws in the NGINX controller to inject and execute arbitrary code, or crafts requests that trigger disclosure of Kubernetes Secrets or trigger resource exhaustion causing denial of service.
Prerequisites
  • Network access to the Insights Hub Private Cloud Ingress NGINX Controller service
  • No authentication required
remotely exploitableno authentication requiredlow complexityhigh EPSS score (90.3%)affects cloud/kubernetes infrastructure critical to OT data systemsarbitrary code execution capability
Exploitability
Likely to be exploited — EPSS score 91.1%
Public Proof-of-Concept (PoC) on GitHub (10 repositories)
Affected products (1)
ProductAffected VersionsFix Status
Insights Hub Private CloudAll versionsFix available
Remediation & Mitigation
0/5
Do now
0/2
HOTFIXContact Siemens customer support to obtain and deploy the latest patched version of Insights Hub Private Cloud
WORKAROUNDRestrict network access to the Insights Hub Private Cloud Ingress NGINX Controller to only authorized networks and users; block internet-facing exposure
Schedule — requires maintenance window
0/2

Patching may require device reboot — plan for process interruption

HARDENINGDeploy the Insights Hub Private Cloud instance behind a firewall with strict ingress rules allowing only necessary ports and source IPs
HARDENINGRotate all Kubernetes Secrets and credentials accessible to the ingress controller as a precaution against potential disclosure
Long-term hardening
0/1
HARDENINGIf remote access to Insights Hub is required, implement a VPN or jump server architecture and ensure VPN software is kept current with security patches
View full CISA ICS-CERT advisory
API: /api/v1/advisories/72c4edb4-ad43-40b1-bfef-8069aee3bb56

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