** Changed in: keystone
Status: In Progress => Fix Released
--
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Engineering Team, which is subscribed to OpenStack Identity (keystone).
https://bugs.launchpad.net/bugs/1901207
Title:
Application credentials of other users can be deleted when knowing the
ID
Status in OpenStack Identity (keystone):
Fix Released
Status in OpenStack Security Advisory:
Won't Fix
Bug description:
Intro
-----
While performing a penetration test on a new OpenStack install of version
Train, we found a vulnerability that could lead to a Denial of Service
condition. Using an installation of DevStack we verified that the issue is
still present.
Description
-----------
In the test situation we had two, separate, projects, each with their own
user. Users were only authorised for their own project, not for the other's
project.
After creating an application credential for user A, we were able to
delete that credential with user B by issuing the OpenStack
application credential delete command with the credential ID as
parameter.
Apparently, there is no authorisation check on the delete (and show)
action and anyone who knows the credential ID can remove it,
potentially creating a Denial of Service attack on the affected
project.
Precondition
------------
- Logged in user (user B)
- Knowing the ID of an application credential of another user (user A)
Discovered on October 8, 2020 by Arjen Zijlstra (a...@warpnet.nl) and
Arthur Donkers (art...@1secure.nl)
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