[Openstack-security] [Bug 1440958] Fix merged to keystone (master)

OpenStack Infra 1440958 at bugs.launchpad.net
Thu May 21 19:35:23 UTC 2015


Reviewed:  https://review.openstack.org/180343
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=b48c820e3015a0d6264df6a0a87bf1a3dbea61c4
Submitter: Jenkins
Branch:    master

commit b48c820e3015a0d6264df6a0a87bf1a3dbea61c4
Author: Lin Hua Cheng <os.lcheng at gmail.com>
Date:   Tue May 5 22:33:24 2015 +0000

    Revert "Loosen validation on matching trusted dashboard"
    
    Loosening the validation introduce a security hole for unvalidated redirect.
    
    For example: redirect_url=http://dashboard/sso?next=http://hacksite
    
    This reverts commit fb6920e5fe1fef2fa32afe602d2bf93f18d48a3f.
    
    Change-Id: I7e85b2b879f4c66c3664e8610d3ddbb999a5ac75
    Closes-Bug: #1440958

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https://bugs.launchpad.net/bugs/1440958

Title:
  loosen validation on matching trusted dashboard

Status in OpenStack Identity (Keystone):
  Fix Committed

Bug description:
  In the current implementation for verifying where the SSO request came
  from, the host is grabbed from the 'origin' query parameter, and
  compared to the list of 'trusted_dashboards' in the config file.

    origin = context['query_string'].get('origin')
    host = urllib.parse.unquote_plus(origin)
    if host in CONF.federation.trusted_dashboard:
      ...

  https://github.com/openstack/keystone/blob/master/keystone/contrib/federation/controllers.py#L278-L287

  This works, but unless the entry is marked perfectly in the config
  file, it won't match. We should loosen the validation that is
  performed, and maybe even use the HTTP Referer instead (and no longer
  require the 'origin' parameter from horizon).

  We should be able to decompose the Refer to figure out the scheme +
  hostname + path, and use that hostname to check against the trusted
  dashboards.

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