Open Stack

We preinstall restrictive iptables rulesets on our images when building
them via http://git.openstack.org/cgit/openstack-infra/project-
config/tree/nodepool/elements/nodepool-base/install.d/20-iptables and
devstack configures keystone's memcached_servers setting to
localhost:11211 so that it traverses the loopback interface rather than
an externally-reachable address.

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https://bugs.launchpad.net/bugs/1749326

Title:
  Exploitable services exposed on community test nodes

Status in kolla-ansible:
  Confirmed

Bug description:
  One of the donor service providers for the upstream OpenStack
  Infrastructure CI pool has notified us that their security team's
  periodic vulnerability scans have been identifying systems at random
  within our environment as running open memcached servers. Job
  correlation from these reports indicates each was running one of the
  following:

  kolla-ansible-oraclelinux-binary
  kolla-ansible-oraclelinux-source
  kolla-ansible-oraclelinux-source-ceph

  Please adjust the configuration of your job framework to prevent these
  services from being exposed to the Internet (through iptables ingress
  filters, service ACLs, configuring them to not listen on globally-
  routable interfaces, whatever works). Thanks!

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