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.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2014:1942 advisory.

    OpenStack Networking (neutron) is a pluggable, scalable, and API-driven     system that provisions networking services to virtual machines. Its main     function is to manage connectivity to and from virtual machines. As of Red     Hat Enterprise Linux OpenStack Platform 4.0, 'neutron' replaces 'quantum'     as the core component of OpenStack Networking.

    A denial of service flaw was found in the way neutron handled the     'dns_nameservers' parameter. By providing specially crafted     'dns_nameservers' values, an authenticated user could use this flaw to     crash the neutron service. (CVE-2014-7821)

    Red Hat would like to thank the OpenStack project for reporting this issue.
    Upstream acknowledges Henry Yamauchi, Charles Neill, and Michael Xin     (Rackspace) as the original reporters.

    This update also fixes the following bugs:

    * Prior to this update, the network name and UUID were not sent to N1KV     during the subnet creation process. Consequently, N1KV was unable to     properly associate the network and subnet in its local configuration.
    This update addresses this issue by sending the required network name and     UUID during subnet creation, with the result that they are now properly     associated on the N1KV. (BZ#1118508)

    * Previously, a rollback did not result in all entries being cleared from     the N1KV-specific database tables, resulting in the presence of stale     entries. This update addresses the issue by performing a proper cleanup of     all N1KV tables. Consequently, stale entries are no longer left in the N1KV     tables. (BZ#1124991)

    * Previously, the N1KV OpenStack Networking (neutron) plug-in did not sent     the subtype for overlay networks during the network segment pool creation     process. This update addresses this issue by sending the required details     during the creation process. (BZ#1130336)

    All openstack-neutron users are advised to upgrade to these updated     packages, which contain backported patches to correct these issues.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2015:0044 advisory.

    OpenStack Networking (neutron) is a pluggable, scalable, and API-driven     system that provisions networking services to virtual machines. Its main     function is to manage connectivity to and from virtual machines. As of Red     Hat Enterprise Linux OpenStack Platform 4.0, 'neutron' replaces 'quantum'     as the core component of OpenStack Networking.

    A denial of service flaw was found in the way neutron handled the     'dns_nameservers' parameter. By providing specially crafted     'dns_nameservers' values, an authenticated user could use this flaw to     crash the neutron service. (CVE-2014-7821)

    Red Hat would like to thank the OpenStack project for reporting this issue.
    Upstream acknowledges Henry Yamauchi, Charles Neill, and Michael Xin     (Rackspace) as the original reporters.

    All openstack-neutron users are advised to upgrade to these updated     packages, which contain backported patches to correct these issues.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

2013.2.4 rebase; CVE-2014-7821 fixed.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
234425	RHEL 7 : openstack-neutron (RHSA-2014:1942)	Nessus	Red Hat Local Security Checks	medium
210158	RHEL 6 : openstack-neutron (RHSA-2015:0044)	Nessus	Red Hat Local Security Checks	medium
82975	Fedora 20 : openstack-neutron-2013.2.4-8.fc20 (2015-5997)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2014-7821

medium

Tenable Plugins

medium

medium

medium