CVE-2019-10876

openstack-neutron: DOS via broken port range merging in security group

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in OpenStack Neutron 11.x before 11.0.7, 12.x before 12.0.6, and 13.x before 13.0.3. By creating two security groups with separate/overlapping port ranges, an authenticated user may prevent Neutron from being able to configure networks on any compute nodes where those security groups are present, because of an Open vSwitch (OVS) firewall KeyError. All Neutron deployments utilizing neutron-openvswitch-agent are affected.

Se ha descubierto un problema en OpenStack Neutron, en las versiones 11.x anteriores a la 11.0.7, en las 12.x anteriores a la 12.0.6 y en las 13.x anteriores a la 13.0.3. Al crear dos grupos de seguridad con rangos de puertos separados/solapados, un usuario autenticado podría impedir que Neutron sea capaz de configurar las redes en cualquier nodo de cálculo donde se encuentran dichos grupos de seguridad, debido a un error de claves en el firewall de Open vSwitch (OVS). Se han visto afectados todos los despliegues de Neutron que utilizan neutron-openvswitch-agent.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-04-04 CVE Reserved
2019-04-05 CVE Published
2024-08-04 CVE Updated
2024-08-26 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (8)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2019/04/09/2	Mailing List
https://bugs.launchpad.net/ossa/+bug/1813007	Issue Tracking
https://security.openstack.org/ossa/OSSA-2019-002.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2019:0879	2021-08-04
https://access.redhat.com/errata/RHSA-2019:0935	2021-08-04
https://review.openstack.org/#/q/topic:bug/1813007	2021-08-04
https://access.redhat.com/security/cve/CVE-2019-10876	2019-04-30
https://bugzilla.redhat.com/show_bug.cgi?id=1695883	2019-04-30

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"				>= 11.0.0 < 11.0.7 Search vendor "Openstack" for product "Neutron" and version " >= 11.0.0 < 11.0.7"		-		Affected
Openstack Search vendor "Openstack"		Neutron Search vendor "Openstack" for product "Neutron"				>= 12.0.0 < 12.0.6 Search vendor "Openstack" for product "Neutron" and version " >= 12.0.0 < 12.0.6"		-		Affected
Openstack Search vendor "Openstack"		Neutron Search vendor "Openstack" for product "Neutron"				>= 13.0.0 < 13.0.3 Search vendor "Openstack" for product "Neutron" and version " >= 13.0.0 < 13.0.3"		-		Affected
Redhat Search vendor "Redhat"		Openstack Search vendor "Redhat" for product "Openstack"				13 Search vendor "Redhat" for product "Openstack" and version "13"		-		Affected
Redhat Search vendor "Redhat"		Openstack Search vendor "Redhat" for product "Openstack"				14 Search vendor "Redhat" for product "Openstack" and version "14"		-		Affected