Bug 1268132 - SAML plugin doesn't work with mod_auth_mellon - 303 redirect ignored
SAML plugin doesn't work with mod_auth_mellon - 303 redirect ignored
Product: Red Hat OpenStack
Classification: Red Hat
Component: python-keystoneclient (Show other bugs)
7.0 (Kilo)
Unspecified Unspecified
unspecified Severity unspecified
: beta
: 8.0 (Liberty)
Assigned To: Nathan Kinder
Rodrigo Duarte
: TestOnly
Depends On:
  Show dependency treegraph
Reported: 2015-10-01 17:34 EDT by Jamie Lennox
Modified: 2016-04-26 14:52 EDT (History)
7 users (show)

See Also:
Fixed In Version: python-keystoneclient-1.7.2-1.el7ost
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2016-04-07 17:10:38 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Launchpad 1501918 None None None Never
OpenStack gerrit 230151 None None None Never

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Description Jamie Lennox 2015-10-01 17:34:50 EDT
The SAML plugin hooks the http redirect code as ECP doesn't correctly follow the HTTP spec in this regard. Currently the plugin specifically looks for a 302 redirection and handles it however it should also handle the 303 redirect code as this is ambiguous in the specification and what mod_auth_mellon uses.
Comment 3 Nathan Kinder 2015-12-10 18:15:09 EST
This is fixed upstream in python-keystoneclient 1.8.0, and it was also backported to the 1.7.2 release on the stable/liberty branch here:


RHEL OSP 8 is currently including python-keystoneclient-1.7.2-1.el7ost, which includes this fix.
Comment 4 Rodrigo Duarte 2016-02-12 08:07:03 EST
Verified for python-keystoneclient-1.7.2-1.el7ost.

Federation setup with:

VM 1: OpenStack + mod_mellon (openstack.rduartes.unknown.test)
VM 2: Ipsilon backed by FreeIPA (ipa.rduartes.unknown.test)

In order to test if it is working we may try to get an unscoped token via Federation and using a python-keystoneclient plugin:

from keystoneclient.contrib.auth.v3 import saml2
from keystoneclient import session
from keystoneclient.v3 import client

# Try to authenticate in the IdP and than use the credentials in the SP
saml2_auth = saml2.Saml2UnscopedToken(auth_url='https://openstack.rduartes.unknown.test:5000/v3',

# This bug is similar to bug #1256995, the failure would occur during the Session creation (it will receive the 303 redirect)
sess = session.Session(auth=saml2_auth)

# Try to actually use the federated credentials
ks = client.Client(session=sess)

print('Try to list projects:')
Comment 7 errata-xmlrpc 2016-04-07 17:10:38 EDT
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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