CVE-2016-5362

openstack-neutron: DHCP spoofing vulnerability

Severity Score

8.2

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

El firewall IPTables en OpenStack Neutron en versiones anteriores a 7.0.4 y 8.0.0 hasta la versión 8.1.0 permite a atacantes remotos eludir un mecanismo destinado a la protección DHCP-spoofing y consecuentemente causar una denegación de servicio o interceptar tráfico de la red a través de un mensaje DHCP de descubrimiento manipulado.

Neutron functionality includes internal firewall management between networks. Due to the relaxed nature of particular rules, it is possible for machines on the same layer 2 networks to forge non-IP traffic, such as ARP and DHCP requests.

OpenStack Networking 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. The following packages have been upgraded to a newer upstream version: openstack-neutron. Security Fix: Neutron functionality includes internal firewall management between networks. Due to the relaxed nature of particular rules, it is possible for machines on the same layer 2 networks to forge non-IP traffic, such as ARP and DHCP requests.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

Partial

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-06-09 CVE Reserved
2016-06-17 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-254: 7PK - Security Features

CAPEC

References (11)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2016/06/10/5	Mailing List
http://www.openwall.com/lists/oss-security/2016/06/10/6	Mailing List
https://bugs.launchpad.net/neutron/+bug/1558658	Third Party Advisory
https://review.openstack.org/#/c/303572	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2016:1473	2018-10-19
https://access.redhat.com/errata/RHSA-2016:1474	2018-10-19
https://review.openstack.org/#/c/300202	2018-10-19
https://review.openstack.org/#/c/303563	2018-10-19
https://security.openstack.org/ossa/OSSA-2016-009.html	2018-10-19
https://access.redhat.com/security/cve/CVE-2016-5362	2016-07-20
https://bugzilla.redhat.com/show_bug.cgi?id=1345889	2016-07-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openstack Search vendor "Openstack"		Neutron Search vendor "Openstack" for product "Neutron"				>= 7.0.0 < 7.0.4 Search vendor "Openstack" for product "Neutron" and version " >= 7.0.0 < 7.0.4"		-		Affected
Openstack Search vendor "Openstack"		Neutron Search vendor "Openstack" for product "Neutron"				>= 8.0.0 <= 8.1.0 Search vendor "Openstack" for product "Neutron" and version " >= 8.0.0 <= 8.1.0"		-		Affected