CVE-2017-16239

openstack-nova: Nova Filter Scheduler bypass through rebuild action

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In OpenStack Nova through 14.0.9, 15.x through 15.0.7, and 16.x through 16.0.2, by rebuilding an instance, an authenticated user may be able to circumvent the Filter Scheduler bypassing imposed filters (for example, the ImagePropertiesFilter or the IsolatedHostsFilter). All setups using Nova Filter Scheduler are affected. Because of the regression described in Launchpad Bug #1732947, the preferred fix is a 14.x version after 14.0.10, a 15.x version after 15.0.8, or a 16.x version after 16.0.3.

En OpenStack Nova hasta la versión 14.0.9, 15.x hasta la versión 15.0.7 y 16.x hasta la versión 16.0.2, al reconstrur una instancia, un usuario autenticado podría saltarse el Filter Scheduler omitiendos los filtros impuestos (por ejemplo, ImagePropertiesFilter o IsolatedHostsFilter). Todas las configuraciones que utilizan Nova Filter Scheduler se ven afectadas. Dada la regresión descrita en Launchpad Bug #1732947, la solución preferida es una versión 14.x posterior a la 14.0.10, una 15.x posterior a la 15.0.8 o una versión 16.x posterior a la 16.0.3.

By rebuilding an instance using a new image, an authenticated user may be able to circumvent the Filter Scheduler, bypassing imposed filters (for example, the ImagePropertiesFilter or the IsolatedHostsFilter).

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-10-31 CVE Reserved
2017-11-14 CVE Published
2023-05-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-841: Improper Enforcement of Behavioral Workflow

CAPEC

References (9)

URL	Tag	Source
http://www.securityfocus.com/bid/101950	Third Party Advisory
https://launchpad.net/bugs/1664931	Issue Tracking

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:0241	2019-10-03
https://access.redhat.com/errata/RHSA-2018:0314	2019-10-03
https://access.redhat.com/errata/RHSA-2018:0369	2019-10-03
https://security.openstack.org/ossa/OSSA-2017-005.html	2019-10-03
https://www.debian.org/security/2017/dsa-4056	2019-10-03
https://access.redhat.com/security/cve/CVE-2017-16239	2018-02-27
https://bugzilla.redhat.com/show_bug.cgi?id=1508539	2018-02-27

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				<= 14.0.9 Search vendor "Openstack" for product "Nova" and version " <= 14.0.9"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				15.0.0 Search vendor "Openstack" for product "Nova" and version "15.0.0"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				15.0.1 Search vendor "Openstack" for product "Nova" and version "15.0.1"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				15.0.2 Search vendor "Openstack" for product "Nova" and version "15.0.2"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				15.0.3 Search vendor "Openstack" for product "Nova" and version "15.0.3"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				15.0.4 Search vendor "Openstack" for product "Nova" and version "15.0.4"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				15.0.5 Search vendor "Openstack" for product "Nova" and version "15.0.5"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				15.0.6 Search vendor "Openstack" for product "Nova" and version "15.0.6"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				15.0.7 Search vendor "Openstack" for product "Nova" and version "15.0.7"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				16.0.0 Search vendor "Openstack" for product "Nova" and version "16.0.0"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				16.0.1 Search vendor "Openstack" for product "Nova" and version "16.0.1"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				16.0.2 Search vendor "Openstack" for product "Nova" and version "16.0.2"		-		Affected