CVE-2020-35509

keycloak: X509 Direct Grant Auth does not verify certificate timestamp validity

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in keycloak affecting versions 11.0.3 and 12.0.0. An expired certificate would be accepted by the direct-grant authenticator because of missing time stamp validations. The highest threat from this vulnerability is to data confidentiality and integrity.

Se ha encontrado un fallo en keycloak afectado a versiones 11.0.3 y 12.0.0. Un certificado caducado sería aceptado por el autenticador de concesión directa debido a una falta de comprobaciones de la marca de tiempo. La mayor amenaza de esta vulnerabilidad es para la confidencialidad e integridad de los datos.

A flaw was found in keycloak. An expired certificate would be accepted by the direct-grant authenticator because of missing time stamp validations. The highest threat from this vulnerability is to data confidentiality and integrity.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-17 CVE Reserved
2021-09-14 CVE Published
2024-03-15 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-295: Improper Certificate Validation

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/cve-2020-35509	2022-12-01
https://access.redhat.com/security/cve/CVE-2020-35509	2021-09-14
https://bugzilla.redhat.com/show_bug.cgi?id=1912427	2021-09-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Keycloak Search vendor "Redhat" for product "Keycloak"				11.0.3 Search vendor "Redhat" for product "Keycloak" and version "11.0.3"		-		Affected
Redhat Search vendor "Redhat"		Keycloak Search vendor "Redhat" for product "Keycloak"				12.0.0 Search vendor "Redhat" for product "Keycloak" and version "12.0.0"		-		Affected