6765188116
The server fault "message" is always shown in the API
server response, regardless of policy or user role.
The fault "details" are only shown to users with the
admin role when the fault code is 500.
The problem with this is for non-nova exceptions, the
fault message is a string-ified version of the exception
(see nova.compute.utils.exception_to_dict) which can
contain sensitive information which the non-admin owner
of the server can see.
This change adds a functional test to recreate the issue
and a change to exception_to_dict which for the non-nova
case changes the fault message by simply storing the
exception type class name. Admins can still see the fault
traceback in the "details" key of the fault dict in the
server API response. Note that _get_fault_details is
changed so that the details also includes the exception
value which is what used to be in the fault message for
non-nova exceptions. This is necessary so admins can still
get the exception message with the traceback details.
Note that nova exceptions with a %(reason)s replacement
variable could potentially be leaking sensitive details as
well but those would need to be cleaned up on a case-by-case
basis since we don't want to change the behavior of all
fault messages otherwise users might not see information
like NoValidHost when their server goes to ERROR status
during scheduling.
SecurityImpact: This change contains a fix for CVE-2019-14433.
Change-Id: I5e0a43ec59341c9ac62f89105ddf82c4a014df81
Closes-Bug: #1837877
(cherry picked from commit
|
||
|---|---|---|
| api-guide/source | ||
| api-ref/source | ||
| devstack | ||
| doc | ||
| etc/nova | ||
| gate | ||
| nova | ||
| playbooks/legacy | ||
| releasenotes | ||
| tools | ||
| .coveragerc | ||
| .gitignore | ||
| .gitreview | ||
| .mailmap | ||
| .stestr.conf | ||
| .zuul.yaml | ||
| CONTRIBUTING.rst | ||
| HACKING.rst | ||
| LICENSE | ||
| MAINTAINERS | ||
| README.rst | ||
| babel.cfg | ||
| bindep.txt | ||
| lower-constraints.txt | ||
| requirements.txt | ||
| setup.cfg | ||
| setup.py | ||
| test-requirements.txt | ||
| tox.ini | ||
README.rst
Team and repository tags
OpenStack Nova
OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of compute technologies, including: libvirt (KVM, Xen, LXC and more), Hyper-V, VMware, XenServer, OpenStack Ironic and PowerVM.
Use the following resources to learn more.
API
To learn how to use Nova's API, consult the documentation available online at:
For more information on OpenStack APIs, SDKs and CLIs in general, refer to:
Operators
To learn how to deploy and configure OpenStack Nova, consult the documentation available online at:
In the unfortunate event that bugs are discovered, they should be reported to the appropriate bug tracker. If you obtained the software from a 3rd party operating system vendor, it is often wise to use their own bug tracker for reporting problems. In all other cases use the master OpenStack bug tracker, available at:
Developers
For information on how to contribute to Nova, please see the contents of the CONTRIBUTING.rst.
Any new code must follow the development guidelines detailed in the HACKING.rst file, and pass all unit tests.
Further developer focused documentation is available at:
Other Information
During each Summit and Project Team Gathering, we agree on what the whole community wants to focus on for the upcoming release. The plans for nova can be found at: