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CVE-2014-7821· NVD / CVE Program· CNA redhat

OpenStack Neutron before 2014.1.4 and 2014.2.x before 2014.2.1 allows remote authenticated users to cause a denial of service (crash) via a

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 3.9% (FIRST EPSS); higher than 90.2% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: neutron (Debian:12) 2014.1.3-6; openstack-neutron (Red Hat:openstack:4::el6) 0:2013.2.4-6.el6ost; openstack-neutron-bigswitch (Red Hat:openstack:4::el6) 0:2013.2.4-6.el6ost.

Low priority for now. Upgrade to neutron (Debian:12) 2014.1.3-6; openstack-neutron (Red Hat:openstack:4::el6) 0:2013.2.4-6.el6ost; openstack-neutron-bigswitch (Red Hat:openstack:4::el6) 0:2013.2.4-6.el6ost or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

OpenStack Neutron before 2014.1.4 and 2014.2.x before 2014.2.1 allows remote authenticated users to cause a denial of service (crash) via a crafted dns_nameservers value in the DNS configuration.

MediumCVSS 4.0 · v2.0—No exploit Fix available
Published
Nov 24, 2014
Updated
Jun 16, 2026
EPSS
3.9% · 90th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
16 / 40 · 4.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.9%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
openstackneutron
fedoraprojectfedora
redhatopenstack

Affected versions

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

  • fedoraproject fedora20
  • openstack neutron2012.2.1 and later · before 2014.1.4
  • openstack neutron2014.2 and later · before 2014.2.1
  • redhat openstack4.0

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12neutronbefore 2014.1.3-62014.1.3-6
Red Hat:openstack:4::el6openstack-neutronbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-bigswitchbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-brocadebefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-ciscobefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-hypervbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-linuxbridgebefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-mellanoxbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-metapluginbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-metering-agentbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-midonetbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-ml2before 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-necbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-nicirabefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-openvswitchbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-plumgridbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-ryubefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6openstack-neutron-vpn-agentbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:4::el6python-neutronbefore 0:2013.2.4-6.el6ost0:2013.2.4-6.el6ost
Red Hat:openstack:5::el6openstack-neutronbefore 0:2014.1.3-12.el6ost0:2014.1.3-12.el6ost
Red Hat:openstack:5::el6openstack-neutron-bigswitchbefore 0:2014.1.3-12.el6ost0:2014.1.3-12.el6ost
Red Hat:openstack:5::el6openstack-neutron-brocadebefore 0:2014.1.3-12.el6ost0:2014.1.3-12.el6ost
Red Hat:openstack:5::el6openstack-neutron-ciscobefore 0:2014.1.3-12.el6ost0:2014.1.3-12.el6ost
Red Hat:openstack:5::el6openstack-neutron-embranebefore 0:2014.1.3-12.el6ost0:2014.1.3-12.el6ost

+41

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

Published before and after this one in the same product

  • ← EarlierCVE-2014-6414Oct 2, 2014 · OpenStack Neutron before 2014.2.4 and 2014.1 before 2014.1.2 allows remote authenticated users to set admin network attributes to default va
    17Monitor
  • ← EarlierCVE-2014-3632Oct 7, 2014 · The 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
  • Later →CVE-2014-8153Jan 15, 2015 · The L3 agent in OpenStack Neutron 2014.2.x before 2014.2.2, when using radvd 2.0+, allows remote authenticated users to cause a denial of se
    17Monitor

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:neutron2014.1.3-6 · Debian:12Package registry (OSV)
red hat:openstack-neutron0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-bigswitch0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-brocade0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-cisco0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-embrane0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-hyperv0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-ibm0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-linuxbridge0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-mellanox0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-metaplugin0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-metering-agent0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package registry (OSV)
red hat:openstack-neutron-midonet0:2014.1.3-12.el6ost · Red Hat:openstack:5::el6Package 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

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
P

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (8 more)

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

All records