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==============================================================================
OSSA-2020-005: OAuth1 request token authorize silently ignores roles parameter
==============================================================================

:Date: May 06, 2020
:CVE: CVE-2020-12690


Affects
~~~~~~~
- - Keystone: <15.0.1, ==16.0.0


Description
~~~~~~~~~~~
kay reported a vulnerability in Keystone's OAuth1 Token API. The list
of roles provided for an OAuth1 access token are ignored, so when an
OAuth1 access token is used to request a keystone token, the keystone
token will contain every role assignment the creator had for the
project instead of the provided subset of roles. This results in the
provided keystone token having more role assignments than the creator
intended, possibly giving unintended escalated access.


Errata
~~~~~~
CVE-2020-12690 was assigned after the original publication date.


Patches
~~~~~~~
- - https://review.opendev.org/725894 (Rocky)
- - https://review.opendev.org/725892 (Stein)
- - https://review.opendev.org/725890 (Train)
- - https://review.opendev.org/725887 (Ussuri)
- - https://review.opendev.org/725885 (Victoria)


Credits
~~~~~~~
- - kay (CVE-2020-12690)


References
~~~~~~~~~~
- - https://launchpad.net/bugs/1873290
- - http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12690


Notes
~~~~~
- - The stable/rocky branch is under extended maintenance and will receive no new
  point releases, but a patch for it is provided as a courtesy.


OSSA History
~~~~~~~~~~~~
- - 2020-05-07 - Errata 1
- - 2020-05-06 - Original Version
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