CVE-2016-2140

openstack-nova: Host data leak through resize/migration

Severity Score

5.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The libvirt driver in OpenStack Compute (Nova) before 2015.1.4 (kilo) and 12.0.x before 12.0.3 (liberty), when using raw storage and use_cow_images is set to false, allows remote authenticated users to read arbitrary files via a crafted qcow2 header in an ephemeral or root disk.

El controlador libvirt en OpenStack Compute (Nova) en versiones anteriores a 2015.1.4 (kilo) y 12.0.x en versiones anteriores a 12.0.3 (liberty), cuando usa almacenamiento en bruto y use_cow_images está establecido a false, permite a usuarios remotos autenticados leer archivos arbitrarios a través de una cabecera qcow2 manipulada en un disco efímero o root.

An information-exposure flaw was found in the OpenStack Compute (nova) resize and migrate functionality. An authenticated user could write a malicious qcow header to an ephemeral or root disk, referencing a block device as a backing file. With a subsequent resize or migration, file system content on the specified device would be leaked to the user. Only setups using libvirt with raw storage and "use_cow_images = False" were affected.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Complete

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-01-29 CVE Reserved
2016-03-08 CVE Published
2023-03-07 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (6)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2016/03/08/6	Mailing List
http://www.securityfocus.com/bid/84277	Third Party Advisory
https://bugs.launchpad.net/nova/+bug/1548450	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://security.openstack.org/ossa/OSSA-2016-007.html	2023-02-13

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2016-2140	2016-03-08
https://bugzilla.redhat.com/show_bug.cgi?id=1313454	2016-03-08

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"				>= 12.0.0 < 12.0.3 Search vendor "Openstack" for product "Nova" and version " >= 12.0.0 < 12.0.3"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				>= 2015.1.0 < 2015.1.4 Search vendor "Openstack" for product "Nova" and version " >= 2015.1.0 < 2015.1.4"		-		Affected