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

Thierry Carrez thierry.carrez+lp at gmail.com
Wed Jul 10 13:36:33 UTC 2013


Ok, so we should:
* implement as a new feature in an upcoming version (the sooner the better)
* document as unsafe in previous versions (OSSN)

Any taker to work on that ?

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2013-2255

** Changed in: ossa
       Status: Incomplete => Won't Fix

** Tags added: security

** Information type changed from Private Security to Public

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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:
  Confirmed
Status in OpenStack Identity (Keystone):
  Confirmed
Status in OpenStack Neutron (virtual network service):
  Confirmed
Status in OpenStack Compute (Nova):
  Confirmed
Status in OpenStack Security Advisories:
  Won't Fix
Status in OpenStack Security Notes:
  In Progress
Status in Python client library for Keystone:
  Confirmed
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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