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CVE-2016-5363

27
FAUCET Score

CVE-2016-5363 describes a vulnerability in the IPTables firewall component of OpenStack Neutron versions before 7.0.4 and 8.0.0 through 8.1.0. This flaw allows remote attackers to bypass MAC-spoofing protection via crafted DHCP discovery messages or non-IP traffic. With a CVSS score of 8.2 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to denial of service or network traffic interception. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0.0CPE matchmatch criteria
cpe:2.3:a:openstack:neutron:7.0.0:*:*:*:*:*:*:*
7.0.1CPE matchmatch criteria
cpe:2.3:a:openstack:neutron:7.0.1:*:*:*:*:*:*:*
7.0.2CPE matchmatch criteria
cpe:2.3:a:openstack:neutron:7.0.2:*:*:*:*:*:*:*
7.0.3CPE matchmatch criteria
cpe:2.3:a:openstack:neutron:7.0.3:*:*:*:*:*:*:*
7.0.4CPE matchmatch criteria
cpe:2.3:a:openstack:neutron:7.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.24%
Probability of exploitation in next 30 days
EPSS Percentile
87.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0324 is in the 77th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

pippatch availablevia ghsa
Product: neutronFixed in: 8.1.0
pippatch availablevia ghsa
Product: neutronFixed in: 7.1.0
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 8.0 (Liberty)Fixed in: openstack-neutron-1:7.0.4-11.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7Fixed in: openstack-neutron-0:2015.1.4-2.el7ost
View patch
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: openstack-neutron
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)Fixed in: openstack-neutron
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: openstack-neutron

Vendor Advisories (2)

pipGHSA-9pp3-cvmq-9p22high

OpenStack Neutron Intended MAC-spoofing protection mechanism bypass

May 17, 2022
redhatCVE-2016-5363Low

openstack-neutron: MAC source address spoofing vulnerability

Mar 29, 2016

References

access.redhat.com / errata/RHSA-2016:1473
access.redhat.com / errata/RHSA-2016:1474
bugs.launchpad.net / neutron/+bug/1558658
review.openstack.org
review.openstack.org
review.openstack.org
security.openstack.org / ossa/OSSA-2016-009.html
Vendor Advisory
openwall.com / lists/oss-security/2016/06/10/5
openwall.com / lists/oss-security/2016/06/10/6