CVE-2014-7821

Severity: medium (CVSS 4.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-11-24 · updated 2026-06-17
Weakness: CWE-20

Description

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.

Affected products

Fedoraproject Fedora: 20
OpenStack Neutron: from 2012.2.1 before 2014.1.4; from 2014.2 before 2014.2.1 — fixed in 2014.1.4, 2014.2.1
OpenStack: 4.0

How to fix

Upgrade to a fixed version: OpenStack Neutron 2014.1.4, 2014.2.1. Check the vendor advisory for mitigations.

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155351.html
http://lists.openstack.org/pipermail/openstack-announce/2014-November/000303.html
http://rhn.redhat.com/errata/RHSA-2014-1938.html
http://rhn.redhat.com/errata/RHSA-2014-1942.html
http://rhn.redhat.com/errata/RHSA-2015-0044.html
http://secunia.com/advisories/62586
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
https://bugs.launchpad.net/neutron/+bug/1378450
https://exchange.xforce.ibmcloud.com/vulnerabilities/98818
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155351.html
http://lists.openstack.org/pipermail/openstack-announce/2014-November/000303.html
http://rhn.redhat.com/errata/RHSA-2014-1938.html

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