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CVE-2017-16239

23
FAUCET Score

CVE-2017-16239 describes a vulnerability in OpenStack Nova (versions 14.0.9, 15.0.7, and 16.0.2 and earlier) where an authenticated user can bypass Filter Scheduler restrictions, such as ImagePropertiesFilter or IsolatedHostsFilter, by rebuilding an instance. This medium-severity vulnerability (CVSS 6.5) has a low attack complexity and allows for high integrity impact without requiring user interaction, though it does not affect confidentiality or availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE. The recommended fix involves upgrading to Nova versions 14.0.10+, 15.0.8+, or 16.0.3+.

Impacted Technologies

VendorProductVersion(s)CPE
<= 14.0.9CPE matchmatch criteria
cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
15.0.0CPE matchmatch criteria
cpe:2.3:a:openstack:nova:15.0.0:*:*:*:*:*:*:*
15.0.1CPE matchmatch criteria
cpe:2.3:a:openstack:nova:15.0.1:*:*:*:*:*:*:*
15.0.2CPE matchmatch criteria
cpe:2.3:a:openstack:nova:15.0.2:*:*:*:*:*:*:*
15.0.3CPE matchmatch criteria
cpe:2.3:a:openstack:nova:15.0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.41%
Probability of exploitation in next 30 days
EPSS Percentile
69.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0141 is in the 84th percentile among its peer group of 21,939 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (11)

pippatch availablevia ghsa
Product: novaFixed in: 16.0.3
pippatch availablevia ghsa
Product: novaFixed in: 15.0.8
pippatch availablevia ghsa
Product: novaFixed in: 14.0.10
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 10.0 (Newton)Fixed in: openstack-nova-1:14.1.0-3.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 10.0 (Newton)Fixed in: python-novaclient-1:6.0.2-2.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 11.0 (Ocata)Fixed in: openstack-nova-1:15.0.8-5.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 12.0 (Pike)Fixed in: openstack-nova-1:16.0.2-9.el7ost
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: openstack-nova
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: openstack-nova
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: openstack-nova
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: openstack-nova

Vendor Advisories (2)

pipGHSA-w2wf-cgwh-vpqgmedium

OpenStack Nova Filter Scheduler Bypass

May 13, 2022
redhatCVE-2017-16239Moderate

openstack-nova: Nova Filter Scheduler bypass through rebuild action

Nov 14, 2017

References

access.redhat.com / errata/RHSA-2018:0241
access.redhat.com / errata/RHSA-2018:0314
access.redhat.com / errata/RHSA-2018:0369
launchpad.net / bugs/1664931
Issue Tracking
security.openstack.org / ossa/OSSA-2017-005.html
Vendor Advisory
debian.org / security/2017/dsa-4056
securityfocus.com / bid/101950
Third Party AdvisoryVDB Entry