CVE-2021-27098

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In SPIRE 0.8.1 through 0.8.4 and before versions 0.9.4, 0.10.2, 0.11.3 and 0.12.1, specially crafted requests to the FetchX509SVID RPC of SPIRE Server’s Legacy Node API can result in the possible issuance of an X.509 certificate with a URI SAN for a SPIFFE ID that the agent is not authorized to distribute. Proper controls are in place to require that the caller presents a valid agent certificate that is already authorized to issue at least one SPIFFE ID, and the requested SPIFFE ID belongs to the same trust domain, prior to being able to trigger this vulnerability. This issue has been fixed in SPIRE versions 0.8.5, 0.9.4, 0.10.2, 0.11.3 and 0.12.1.

En SPIRE versiones 0.8.1 hasta 0.8.4 y versiones anteriores a 0.9.4, 0.10.2, 0.11.3 y 0.12.1, unas peticiones especialmente diseñadas para FetchX509SVID RPC de la API del Legacy Node de SPIRE Server, pueden resultar en una posible emisión de un Certificado X.509 con un URI SAN para un ID de SPIFFE que el agente no está autorizado a distribuir. Se presentan controles apropiados para requerir que la persona que llama presente un certificado de agente válido que ya esté autorizado para emitir al menos un ID de SPIFFE, y que el ID de SPIFFE pedido pertenezca al mismo dominio confiable, antes de poder desencadenar esta vulnerabilidad. Este problema ha sido corregido en versiones 0.8.5, 0.9.4, 0.10.2, 0.11.3 y 0.12.1 de SPIRE

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-02-10 CVE Reserved
2021-03-05 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-295: Improper Certificate Validation

CAPEC

References (1)

URL	Tag	Source
https://github.com/spiffe/spire/security/advisories/GHSA-h746-rm5q-8mgq	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cncf Search vendor "Cncf"		Spire Search vendor "Cncf" for product "Spire"				>= 0.8.1 <= 0.8.4 Search vendor "Cncf" for product "Spire" and version " >= 0.8.1 <= 0.8.4"		-		Affected
Cncf Search vendor "Cncf"		Spire Search vendor "Cncf" for product "Spire"				>= 0.9.0 < 0.9.4 Search vendor "Cncf" for product "Spire" and version " >= 0.9.0 < 0.9.4"		-		Affected
Cncf Search vendor "Cncf"		Spire Search vendor "Cncf" for product "Spire"				>= 0.10.0 < 0.10.2 Search vendor "Cncf" for product "Spire" and version " >= 0.10.0 < 0.10.2"		-		Affected
Cncf Search vendor "Cncf"		Spire Search vendor "Cncf" for product "Spire"				>= 0.11.0 < 0.11.3 Search vendor "Cncf" for product "Spire" and version " >= 0.11.0 < 0.11.3"		-		Affected
Cncf Search vendor "Cncf"		Spire Search vendor "Cncf" for product "Spire"				>= 0.12.0 < 0.12.1 Search vendor "Cncf" for product "Spire" and version " >= 0.12.0 < 0.12.1"		-		Affected