CVE-2014-3517

openstack-nova: timing attack issue allows access to other instances' configuration information

Severity Score

4.3

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.

api/metadata/handler.py en OpenStack Compute (Nova) anterior a 2013.2.4, 2014.x anterior a 2014.1.2 y Juno anterior a Juno-2, cuando redirige las solicitudes de metadatos a través de Neutron, facilita a atacantes remotos adivinar las firmas de ID de instancia a través de un ataque de fuerza bruta que se basa en las diferencias de tiempo en las respuestas a las solicitudes de metadatos de la instancia.

A side-channel timing attack flaw was found in Nova. An attacker could possibly use this flaw to guess valid instance ID signatures, giving them access to details of another instance, by analyzing the response times of requests for instance metadata. This issue only affected configurations that proxy metadata requests via Neutron.

*Credits: N/A

CVSS Scores

NISTv2 4.3

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-05-14 CVE Reserved
2014-07-24 CVE Published
2023-03-07 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWE-385: Covert Timing Channel

CAPEC

References (4)

URL	Tag	Source
https://bugs.launchpad.net/nova/+bug/1325128	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2014/07/17/2	2023-02-13

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2014-3517	2014-08-21
https://bugzilla.redhat.com/show_bug.cgi?id=1112499	2014-08-21

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"				>= 2013.2 <= 2013.2.4 Search vendor "Openstack" for product "Nova" and version " >= 2013.2 <= 2013.2.4"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				>= 2014.1 < 2014.1.2 Search vendor "Openstack" for product "Nova" and version " >= 2014.1 < 2014.1.2"		-		Affected
Openstack Search vendor "Openstack"		Nova Search vendor "Openstack" for product "Nova"				2014.2.0 Search vendor "Openstack" for product "Nova" and version "2014.2.0"		milestone1		Affected