Description

Container security

Jay Beale  @inguardians , @jaybeale

Containers

• What the heck is a container?
• • Linux distribution with a kernel
  • • Containers run on top of that, sharing the kernel, but not the filesystem
  • Namespaces
  • • Mount
    • Network
    • Hostname
    • PID
    • IPC
    • Users
• Somebody said we've had containers since before Docker
• • Containers started in 2005, with OpenVZ
  • Docker was 2013, Kubernetes 2014
• Image Security
• • CoreOS Clair for vuln scanning images
  • Public repos vs private
  • Don't keep the image running for so long?
  • Don't run as root
• More Containment stuff
• • Non-privileged containers
  • Remap the users, so root in container isn't root outside
  • Drop root capabilities
  • Seccomp for kernel syscalls
  • AppArmor or SELinux
• All of above is about Docker, what about Kubernetes
• • Get onto most recent version of K8S - 1.7 and 1.8 brought big security improvements
  • Network policy (egress firewalls)
  • RBAC (define what users and service accounts can do what)
  • Use namespaces per tenant and think hard about multi-tenancy
  • Use the CIS guides for lockdown of K8S and the host
  • Kube-bench

Difference between containers and sandboxing

Roll your own -

    Containers

        Using public registries - leave you vulnerable

        Use your own private repos for deploying containers

Reduce attack surface

Reduce user access

Automation will allow more security to get baked in.

https://www.infoworld.com/article/3104030/security/5-keys-to-docker-container-security.html

https://blog.blackducksoftware.com/8-takeaways-nist-application-container-security-guide

https://www.vagrantup.com/downloads.html

https://www.vmware.com/products/thinapp.html

https://www.meetup.com/SEASec-East/events/249983387/

S3 buckets / Azure Blobs

https://docs.microsoft.com/en-us/azure/architecture/aws-professional/services

https://docs.aws.amazon.com/config/latest/developerguide/s3-bucket-policy.html

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