yahoo-eng-team team mailing list archive

[Dolph Mathews <1299039@xxxxxxxxxxxxxxxxxx>]

Implemented as part of:

  https://blueprints.launchpad.net/keystone/+spec/rescoping

** Changed in: keystone
    Milestone: None => 2015.1.0

** Changed in: keystone
       Status: Triaged => Fix Released

** Changed in: keystone
     Assignee: Priti Desai (priti-desai) => Adam Young (ayoung)

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https://bugs.launchpad.net/bugs/1299039

Title:
  Token Scoping

Status in OpenStack Identity (Keystone):
  Fix Released

Bug description:
  In Havana Stable release for both V2.0 an V3,

  A scoped token can be used to get another scoped or un-scopped token.
  This can be exploited by anyone who has gained access to  a scoped
  token.

  For example,

  1. userA is related to two projects: Project1, Project2
  2. userA creates  tokenA scoped by Project1
  3.  userA  shares the tokenA to a third party (malicious).  
  4. Third party can now make a token creation call to create a new tokenB scoped under projectB using tokenA.

  Although, we know that bearer token has all or nothing property, scoping the token can limit the exposure. 
  A scoped token should not be allowed to create another scoped token.

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