Bug 44450 - SAML login raises AttributeError: 'NoneType' object has no attribute 'get'
SAML login raises AttributeError: 'NoneType' object has no attribute 'get'
Product: UCS
Classification: Unclassified
Component: UMC (Generic)
UCS 4.2
Other Linux
: P5 normal (vote)
: UCS 4.2-0-errata
Assigned To: Florian Best
Richard Ulmer
Depends on:
  Show dependency treegraph
Reported: 2017-04-21 17:11 CEST by Florian Best
Modified: 2018-01-15 16:32 CET (History)
1 user (show)

See Also:
What kind of report is it?: Bug Report
What type of bug is this?: 5: Major Usability: Impairs usability in key scenarios
Who will be affected by this bug?: 3: Will affect average number of installed domains
How will those affected feel about the bug?: 3: A User would likely not purchase the product
User Pain: 0.257
Enterprise Customer affected?: Yes
School Customer affected?:
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number: 2017122921000424, 2017041821000808, 2017042421000574, 2017042721001291, 2017050521000438, 2017050521000536, 2017060721000807
Bug group (optional): External feedback
Max CVSS v3 score:


Note You need to log in before you can comment on or make changes to this bug.
Description Florian Best univentionstaff 2017-04-21 17:11:57 CEST
Version: 4.2-0 errata1 (Lesum)

The server encountered an unexpected condition which prevented it from fulfilling the request.

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/cherrypy/_cprequest.py", line 670, in respond
    response.body = self.handler()
  File "/usr/lib/python2.7/dist-packages/cherrypy/lib/encoding.py", line 217, in __call__
    self.body = self.oldhandler(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/cherrypy/_cpdispatch.py", line 61, in __call__
    return self.callable(*self.args, **self.kwargs)
  File "/usr/sbin/univention-management-console-web-server", line 981, in sso
    cherrypy.response.headers['Location'] = user.data.get('relay_state', {}).get('referer') or '/univention/management/'
AttributeError: 'NoneType' object has no attribute 'get'
Comment 1 Florian Best univentionstaff 2017-04-27 12:28:20 CEST
Reported again, 4.2-0 errata0 (Lesum) - UCS@school 4.2 v1
Comment 2 Florian Best univentionstaff 2017-04-28 07:34:11 CEST
Reported again, 4.2-0 errata4 (Lesum)
Comment 3 Florian Best univentionstaff 2017-05-02 16:44:15 CEST
r79015 | YAML Bug #44217 Bug #44450 Bug #43859

univention-management-console (9.0.80-5):
r79013 | Bug #44450: Bug #44217: fix errors during SAML login
Comment 4 Florian Best univentionstaff 2017-05-05 15:41:33 CEST
Version: 4.2-0 errata4 (Lesum)

Remark: Fehlermeldung kam nach Anmeldung als Administrator nach einem reboot des Server als dieser den Fehler:

SimpleSAML_Error_BadRequest: BADREQUEST('%REASON%' => 'Missing AuthState parameter.')

Comment 6 Florian Best univentionstaff 2017-05-10 16:03:11 CEST
Reported again, 4.2-0 errata4 (Lesum)

Remark: Fehler wird alle paar Stunden wiederholt. Kein Internetzugang
Comment 7 Florian Best univentionstaff 2017-05-16 12:26:20 CEST
To reproduce this error you need to open the login page (ucs-sso.…) and restart the UMC-Webserver before submitting the credentials form.
Comment 8 Richard Ulmer univentionstaff 2017-05-16 13:35:40 CEST
I was able to reproduce the bug using Comment #7, but still got the same traceback posted in Comment #1 after updating univention-management-console.
Comment 9 Florian Best univentionstaff 2017-05-16 13:40:28 CEST
univention-management-console (9.0.80-12):
r79367 | Bug #44450: fix exception during SAML login
Comment 10 Richard Ulmer univentionstaff 2017-05-16 14:18:18 CEST
Ok, looks good now. -> Verified
Comment 11 Janek Walkenhorst univentionstaff 2017-06-15 17:58:10 CEST
Comment 12 Johannes Keiser univentionstaff 2018-01-15 16:32:31 CET
Reported again: Version: 4.2-0 errata0 (Lesum)

Remark: nach Upgrade von 4.1.5 auf 4.2.0 tauchte dieser Fehler auf