Bug 1566611 - Suboptimal wait_condition_handle password generator
Summary: Suboptimal wait_condition_handle password generator
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: openstack-heat
Version: 12.0 (Pike)
Hardware: All
OS: All
Target Milestone: z3
: 12.0 (Pike)
Assignee: Zane Bitter
QA Contact: Ronnie Rasouli
Depends On: 1556946 1566607
Blocks: 1566612
TreeView+ depends on / blocked
Reported: 2018-04-12 15:29 UTC by Zane Bitter
Modified: 2018-08-20 12:44 UTC (History)
13 users (show)

Fixed In Version: openstack-heat-9.0.4-1.el7ost
Doc Type: Enhancement
Doc Text:
Keystone user passwords generated by Heat resources such as WaitConditionHandle now meet more stringent regular expression-based password complexity requirements. The new passwords are 32-character random strings containing at least one uppercase and one lowercase letter, one digit, and one of the characters '!@#%^&*'. These passwords should pass the standard of virtually any regular expression-based password validation. Previously, generated passwords took the form of 32 hexadecimal digits, and thus never contained uppercase letters or special characters.
Clone Of: 1566607
: 1566612 (view as bug list)
Last Closed: 2018-08-20 12:44:10 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Launchpad 1444429 0 None None None 2018-04-12 15:29:00 UTC
OpenStack gerrit 559128 0 None None None 2018-04-12 15:29:00 UTC
Red Hat Product Errata RHBA-2018:2520 0 None None None 2018-08-20 12:44:19 UTC

Description Zane Bitter 2018-04-12 15:29:00 UTC
+++ This bug was initially created as a clone of Bug #1566607 +++

+++ This bug was initially created as a clone of Bug #1556946 +++

WaitCondition uses obsolete method to generate the passwords (uuid.uuid4().hex) [1]. As a result, generated passwords don't contain special characters or upper case letters, so it is impossible to validate them against keyston's strong password policies.

Steps to reproduce:

Enforce strong password policies in keystone. Use Heat templates with WaitConditionHandle.

Expected result:
Heat templates successfully deployed.

Actual result:
Heat fails with the following output:

resource_type: OS::Heat::WaitConditionHandle
  status_reason: |
    BadRequest: resources.saltmaster_wait_handle: The password does not match the requirements: Password must contain 8 characters and at least one uppercase letter, one lowercase letter, one number and one unique symbol.. (HTTP 400) (Request-ID: req-4e0d89b1-1ad2-420c-86a2-3bdbdf0a3581)

PS. I have checked the heat code and it looks like we already implemented password generator [2], [3]. So we basically should just change the password generation methods.

[1] https://github.com/openstack/heat/blob/master/heat/engine/resources/openstack/heat/wait_condition_handle.py#L138
[2] https://blueprints.launchpad.net/heat/+spec/random-string-resource
[3] https://github.com/openstack/heat/blob/master/heat/engine/resources/openstack/heat/random_string.py

--- Additional comment from Zane Bitter on 2018-03-19 13:17:04 EDT ---

There's a related-but-not-identical bug opened upstream too: https://bugs.launchpad.net/heat/+bug/1666129

There was a patch proposed for that one that involved retrying in a loop until you found a successful password, but the author unfortunately abandoned it after I suggested using the password generator from RandomString just as you did.

I agree that that's the right approach, especially now that https://bugs.launchpad.net/heat/+bug/1745931 is fixed. It will involve some refactoring, however, so it remains to be seen how much of a problem that poses for backporting.

--- Additional comment from Zane Bitter on 2018-03-22 10:01:58 EDT ---

I proposed patches upstream. It should be possible to eventually get these backported (the refactoring one includes a security improvement for OS::Heat::RandomString, which makes it a candidate for stable branch backporting even upstream) once they've been reviewed. In the meantime, the workaround posted in the upstream bug is a good one: modifying the Keystone password_regex to allow passwords without special characters if they are long enough:

  "< your original regex >|^(?=.*?[a-zA-Z])(?=.*?[0-9]).{30,}$"

--- Additional comment from Zane Bitter on 2018-04-12 11:27:24 EDT ---

Patch has been backported upstream and is awaiting upstream review.

Comment 1 Zane Bitter 2018-04-24 21:00:35 UTC
Patch is merged in upstream stable/pike branch.

Comment 5 Ronnie Rasouli 2018-07-19 12:27:38 UTC
tested wait condition and keystone regex compliance policy.
password_regex = ^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[!@#$%^&*]).{7,}$
integration tests passed

Comment 12 errata-xmlrpc 2018-08-20 12:44:10 UTC
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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