CVE-2017-16239 OpenStack Nova Filter Scheduler Bypass
Medium 6.5
Published
Updated
Check this codebase for CVE-2017-16239 and fix it if it is affected.
What it is: CVE-2017-16239 is a medium-severity vulnerability in n/a, published on 14 Nov 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-16239 in the wild and no public exploit code.
Affected packages and fixed versions:
- nova (PyPI): affected from 14.0.0; fixed in 14.0.10, 15.0.8, 16.0.3
- nova (PyPI): affected from 14.0.0; fixed in 14.0.10
- nova (PyPI): affected from 14.0.0; fixed in 14.0.10
- nova (PyPI): affected from 15.0.0; fixed in 15.0.8
- nova (PyPI): affected from 15.0.0; fixed in 15.0.8
- nova (PyPI): affected from 16.0.0; fixed in 16.0.3
- nova (PyPI): affected from 16.0.0; fixed in 16.0.3
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2017-16239/ (Markdown: https://insights.sbomify.com/CVE-2017-16239/index.md)
Authenticated users can bypass scheduler filters by rebuilding instances, potentially violating isolation policies in OpenStack Nova deployments.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-16239?
CVE-2017-16239 is a medium-severity vulnerability in n/a, published on 14 Nov 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In OpenStack Nova through 14.0.9, 15.x through 15.0.7, and 16.x through 16.0.2, by rebuilding an instance, an authenticated user may be able to circumvent the Filter Scheduler bypassing imposed filters (for example, the ImagePropertiesFilter or the IsolatedHostsFilter). All setups using Nova Filter Scheduler are affected. Because of the regression described in Launchpad Bug #1732947, the preferred fix is a 14.x version after 14.0.10, a 15.x version after 15.0.8, or a 16.x version after 16.0.3.
Which versions are affected by CVE-2017-16239?
7 open source packages ship an affected version, including nova. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
nova PyPI | From 14.0.0 | 14.0.10, 15.0.8, 16.0.3 |
nova PyPI | From 14.0.0 | 14.0.10 |
nova PyPI | From 14.0.0 | 14.0.10 |
nova PyPI | From 15.0.0 | 15.0.8 |
nova PyPI | From 15.0.0 | 15.0.8 |
nova PyPI | From 16.0.0 | 16.0.3 |
1 more packages
nova PyPI | From 16.0.0 | 16.0.3 |
Linux distribution packages (33)
openstack-nova Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-api Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-cells Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-cert Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-common Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-compute Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-conductor Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-console Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-migration Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-network Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-novncproxy Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-placement-api Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-scheduler Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-serialproxy Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
openstack-nova-spicehtml5proxy Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
python-nova Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
python-nova-tests Red Hat:openstack:10::el7 | All versions | 1:14.1.0-3.el7ost |
python-novaclient Red Hat:openstack:10::el7 | All versions | 1:6.0.2-2.el7ost |
openstack-nova Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-api Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-cells Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-cert Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-common Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-compute Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-conductor Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-console Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-migration Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-network Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-novncproxy Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-placement-api Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-scheduler Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-serialproxy Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
openstack-nova-spicehtml5proxy Red Hat:openstack:11::el7 | All versions | 1:15.0.8-5.el7ost |
Products include Openstack Nova.
How do I fix CVE-2017-16239?
Upgrade nova to a fixed version for your release line: 14.0.10, 15.0.8 or 16.0.3.
Is CVE-2017-16239 being exploited?
There is no known exploitation of CVE-2017-16239 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2017-7214 OpenStack Nova logs sensitive context from notification exceptions
- CVE-2017-17051 OpenStack Nova DoS by rebuilding the same instance with a new image multiple times
- CVE-2020-17376 OpenStack Nova Live migration fails to update persistent domain XML
- CVE-2017-18191 OpenStack Nova Denial of service attack on the compute host
- CVE-2015-3280 OpenStack Compute (nova) allows remote authenticated users to cause a denial of service
Sources
Also known as DEBIAN-CVE-2017-16239, DSA-4056-1, GHSA-w2wf-cgwh-vpqg, PYSEC-2026-694, RHSA-2018:0241, RHSA-2018:0314 and 3 more.