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CVE-2016-5362· NVD / CVE Program· CNA redhat

The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended DHCP-spoofing

The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended DHCP-spoofing protection mechanism and consequently cause a denial of service or intercept network traffic via a crafted DHCP discovery message.

HighCVSS 8.2 · v3.0—No exploit Fix available
Published
Jun 17, 2016
Updated
Jun 16, 2026
EPSS
3.4% · 89th percentile
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Report tools

JSON

Action score

33

Monitor

Low priority for now.

CVSS
32 / 40 · 8.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.4%

Affected systems

VendorProduct
openstackneutron

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • openstack neutron7.0.0 and later · before 7.0.4
  • openstack neutron8.0.0 and later · up to 8.1.0 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12neutronbefore 2:8.1.2-12:8.1.2-1
PyPIneutronfrom 8.0.0 · before 8.1.18.1.1
PyPIneutronfrom 8.0.0 · before 8.1.18.1.1
PyPIneutronbefore 7.0.57.0.5
PyPIneutronbefore 7.0.57.0.5
Red Hat:openstack:7::el7openstack-neutronbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-bigswitchbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-brocadebefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-ciscobefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-commonbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-embranebefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-ibmbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-linuxbridgebefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-mellanoxbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-metapluginbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-metering-agentbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-midonetbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-ml2before 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-necbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-nuagebefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-ofagentbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-oneconvergence-nvsdbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-opencontrailbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost
Red Hat:openstack:7::el7openstack-neutron-openvswitchbefore 0:2015.1.4-2.el7ost0:2015.1.4-2.el7ost

+52

Same product

openstack: all records

Other highest-scoring records for the same primary product.

  • CVE-2015-8914The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended ICMPv6-spoofin
    37Monitor
  • CVE-2014-0187The openvswitch-agent process in OpenStack Neutron 2013.1 before 2013.2.4 and 2014.1 before 2014.1.1 allows remote authenticated users to by
    37Monitor
  • CVE-2021-38598OpenStack Neutron before 16.4.1, 17.x before 17.1.3, and 18.0.0 allows hardware address impersonation when the linuxbridge driver with ebtab
    36Monitor
  • CVE-2016-5363The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended MAC-spoofing p
    33Monitor
  • CVE-2014-3632The default configuration in a sudoers file in the Red Hat openstack-neutron package before 2014.1.2-4, as used in Red Hat Enterprise Linux
    31Monitor
  • CVE-2013-6433The default configuration in the Red Hat openstack-neutron package before 2013.2.3-7 does not properly set a configuration file for rootwrap
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Debian:neutron2:8.1.2-1 · Debian:12Package registry (OSV)
PyPI:neutron7.0.5Package registry (OSV)
PyPI:neutron8.1.1Package registry (OSV)
Red Hat:openstack-neutron1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-bigswitch1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-brocade1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-cisco1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-common1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-dev-server1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-embrane1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-linuxbridge1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-mellanox1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-metering-agent1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-midonet1:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
Red Hat:openstack-neutron-ml21:7.0.4-11.el7ost · Red Hat:openstack:8::el7Package registry (OSV)
SUSE:openstack-ceilometer5.0.4~a0~dev6-6.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-ceilometer-doc5.0.4~a0~dev6-6.2 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-cinder7.0.3~a0~dev2-7.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-cinder-doc7.0.3~a0~dev2-7.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-dashboard8.0.2~a0~dev34-8.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-glance11.0.2~a0~dev13-7.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-glance-doc11.0.2~a0~dev13-7.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-heat5.0.2~a0~dev93-9.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-heat-doc5.0.2~a0~dev93-9.3 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-keystone8.1.1~a0~dev13-3.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-keystone-doc8.1.1~a0~dev13-3.2 · SUSE:OpenStack Cloud 6Package registry (OSV)
SUSE:openstack-manila1.0.2~a0~dev11-9.1 · SUSE:OpenStack Cloud 6Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-254 · 7PK - Security Features

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records