CVE-2021-38155

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

OpenStack Keystone 10.x through 16.x before 16.0.2, 17.x before 17.0.1, 18.x before 18.0.1, and 19.x before 19.0.1 allows information disclosure during account locking (related to PCI DSS features). By guessing the name of an account and failing to authenticate multiple times, any unauthenticated actor could both confirm the account exists and obtain that account's corresponding UUID, which might be leveraged for other unrelated attacks. All deployments enabling security_compliance.lockout_failure_attempts are affected.

OpenStack Keystone versiones 10.x hasta 16.x anteriores a 16.0.2, versiones 17.x anteriores a 17.0.1, versiones 18.x anteriores a 18.0.1 y versiones 19.x anteriores a 19.0.1, permite una divulgación de información durante el bloqueo de cuentas (relacionado con las características de PCI DSS). Al adivinar el nombre de una cuenta y fallando en la autenticación múltiples veces, cualquier actor no autenticado podría tanto confirmar que la cuenta se presenta y obtener el UUID correspondiente de esa cuenta, que podría ser aprovechado para otros ataques no relacionados. Todas las implantaciones que permiten security_compliance.lockout_failure_attempts están afectadas

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-06 CVE Reserved
2021-08-06 CVE Published
2024-04-21 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-307: Improper Restriction of Excessive Authentication Attempts

CAPEC

References (4)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2024/01/msg00007.html	Mailing List

URL	Date	SRC
https://launchpad.net/bugs/1688137	2024-08-04

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2021/08/10/5	2024-01-21
https://security.openstack.org/ossa/OSSA-2021-003.html	2024-01-21

URL	Date	SRC

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"				>= 10.0.0 < 16.0.2 Search vendor "Openstack" for product "Keystone" and version " >= 10.0.0 < 16.0.2"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				>= 17.0.0 < 17.0.1 Search vendor "Openstack" for product "Keystone" and version " >= 17.0.0 < 17.0.1"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				>= 18.0.0 < 18.0.1 Search vendor "Openstack" for product "Keystone" and version " >= 18.0.0 < 18.0.1"		-		Affected
Openstack Search vendor "Openstack"		Keystone Search vendor "Openstack" for product "Keystone"				>= 19.0.0 < 19.0.1 Search vendor "Openstack" for product "Keystone" and version " >= 19.0.0 < 19.0.1"		-		Affected