[Openstack-security] [Bug 1188189] Re: Some server-side 'SSL' communication fails to check certificates (use of HTTPSConnection)

Sean Dague sean at dague.net
Thu Sep 25 15:27:07 UTC 2014


The generic version of this isn't getting fixed in Nova, so openning the
following bugs:

https://bugs.launchpad.net/nova/+bug/1373992
https://bugs.launchpad.net/nova/+bug/1373993
https://bugs.launchpad.net/nova/+bug/1374000
https://bugs.launchpad.net/nova/+bug/1374001

For the specific instances where we need to fix this

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https://bugs.launchpad.net/bugs/1188189

Title:
  Some server-side 'SSL' communication fails to check certificates (use
  of HTTPSConnection)

Status in Cinder:
  In Progress
Status in OpenStack Identity (Keystone):
  Fix Released
Status in OpenStack Neutron (virtual network service):
  In Progress
Status in OpenStack Compute (Nova):
  Confirmed
Status in Oslo VMware library for OpenStack projects:
  New
Status in OpenStack Security Advisories:
  Won't Fix
Status in OpenStack Security Notes:
  Fix Released
Status in Python client library for Keystone:
  Fix Released
Status in OpenStack Object Storage (Swift):
  Invalid

Bug description:
  Grant Murphy from Red Hat reported usage of httplib.HTTPSConnection
  objects. In Python 2.x those do not perform CA checks so client
  connections are vulnerable to MiM attacks.

  """
  The following files use httplib.HTTPSConnection :
  keystone/middleware/s3_token.py
  keystone/middleware/ec2_token.py
  keystone/common/bufferedhttp.py
  vendor/python-keystoneclient-master/keystoneclient/middleware/auth_token.py

  AFAICT HTTPSConnection does not validate server certificates and
  should be avoided. This is fixed in Python 3, however in 2.X no
  validation occurs. I suspect this is also applicable to most OpenStack
  modules that make HTTPS client calls.

  Similar problems were found in ovirt:
  https://bugzilla.redhat.com/show_bug.cgi?id=851672 (CVE-2012-3533)

  With solutions for ovirt:
  http://gerrit.ovirt.org/#/c/7209/
  http://gerrit.ovirt.org/#/c/7249/
  """

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