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

Sean Dague sean at dague.net
Fri Sep 12 22:25:19 UTC 2014


This is definitely still in nova in a few places. I kind of thing this
should be an RC bug to actually clean up the rest of this.

** Changed in: nova
   Importance: Undecided => High

** Changed in: nova
     Assignee: Xurong Yang (idopra) => (unassigned)

** Changed in: nova
   Importance: High => Critical

** Changed in: nova
    Milestone: None => juno-rc1

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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 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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