CVE-2013-4294

OpenStack: Keystone Token revocation failure using Keystone memcache/KVS backends

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The (1) mamcache and (2) KVS token backends in OpenStack Identity (Keystone) Folsom 2012.2.x and Grizzly before 2013.1.4 do not properly compare the PKI token revocation list with PKI tokens, which allow remote attackers to bypass intended access restrictions via a revoked PKI token.

El (1) mamcache y (2) KVS token backends en OpenStack Identity (Keystone) Folsom 2012.2.x y Grizzly anterior a la versión 2013.1.4 no compara correctamente la lista de revocación del token PKI con tokens PKI, lo que permite a atacantes remotos evitar restricciones de acceso a través de un token PKI revocado.

Chmouel Boudjnah discovered that Keystone did not properly invalidate user tokens when a tenant was disabled which allowed an authenticated user to retain access via the token. Kieran Spear discovered that Keystone did not properly verify PKI tokens when performing revocation when using the memcache and KVS backends. An authenticated attacker could exploit this to bypass intended access restrictions. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

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

2013-06-12 CVE Reserved
2013-09-23 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls
CWE-613: Insufficient Session Expiration

CAPEC

References (8)

URL	Tag	Source
http://osvdb.org/97237	Vdb Entry
http://secunia.com/advisories/54706	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://seclists.org/oss-sec/2013/q3/586	2023-02-13

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2013-1285.html	2023-02-13
http://www.ubuntu.com/usn/USN-2002-1	2023-02-13
https://bugs.launchpad.net/keystone/+bug/1202952	2023-02-13
https://access.redhat.com/security/cve/CVE-2013-4294	2013-09-25
https://bugzilla.redhat.com/show_bug.cgi?id=1004452	2013-09-25

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				2012.2 Search vendor "Openstack" for product "Keystone" and version "2012.2"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				2012.2.1 Search vendor "Openstack" for product "Keystone" and version "2012.2.1"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				2012.2.2 Search vendor "Openstack" for product "Keystone" and version "2012.2.2"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				2012.2.3 Search vendor "Openstack" for product "Keystone" and version "2012.2.3"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				2012.2.4 Search vendor "Openstack" for product "Keystone" and version "2012.2.4"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				2013.1 Search vendor "Openstack" for product "Keystone" and version "2013.1"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				2013.1.1 Search vendor "Openstack" for product "Keystone" and version "2013.1.1"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				2013.1.2 Search vendor "Openstack" for product "Keystone" and version "2013.1.2"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				2013.1.3 Search vendor "Openstack" for product "Keystone" and version "2013.1.3"		-		Affected