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Scenario #219
Security
K8s v1.18, On-Premise
Using Insecure Docker Registry for Container Images
The cluster was pulling container images from an insecure, untrusted Docker registry, exposing the system to the risk of malicious images.
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What Happened
The Kubernetes cluster was configured to pull images from an untrusted Docker registry, which lacked proper security measures such as image signing or vulnerability scanning.
Diagnosis Steps
- 1Inspected the image pull configuration and found that the registry URL pointed to an insecure registry.
- 2Analyzed the images and found they lacked proper security scans or signing.
Root Cause
Using an insecure registry without proper image signing and scanning introduced the risk of malicious images.
Fix/Workaround
• Configured Kubernetes to pull images only from trusted and secure registries.
• Implemented image signing and vulnerability scanning in the CI/CD pipeline.Lessons Learned
Always use trusted and secure Docker registries and implement image security practices.
How to Avoid
- 1Use secure image registries with image signing and vulnerability scanning enabled.
- 2Implement image whitelisting to control where container images can be pulled from.