CVE-2021-22009

VMware vCenter Server Appliance External Control of File Path Denial-of-Service Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The vCenter Server contains multiple denial-of-service vulnerabilities in VAPI (vCenter API) service. A malicious actor with network access to port 443 on vCenter Server may exploit these issues to create a denial of service condition due to excessive memory consumption by VAPI service.

vCenter Server contiene múltiples vulnerabilidades de denegación de servicio en el servicio VAPI (vCenter API). Un actor malicioso con acceso a la red al puerto 443 de vCenter Server puede explotar estos problemas para crear una condición de denegación de servicio debido al consumo excesivo de memoria por parte del servicio VAPI

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of VMware vCenter Server Appliance. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the processing of jsonrpc messages. A crafted request can trigger a file read operation of a blocking or slow character stream. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

*Credits: Sergey Gerasimov and George webpentest Noseevich of SolidLab

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-04 CVE Reserved
2021-09-22 CVE Published
2024-06-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-668: Exposure of Resource to Wrong Sphere

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://www.vmware.com/security/advisories/VMSA-2021-0020.html	2022-07-12

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Vmware Search vendor "Vmware"		Cloud Foundation Search vendor "Vmware" for product "Cloud Foundation"				>= 3.0 < 5.0 Search vendor "Vmware" for product "Cloud Foundation" and version " >= 3.0 < 5.0"		-		Affected
Vmware Search vendor "Vmware"		Vcenter Server Search vendor "Vmware" for product "Vcenter Server"				6.7 Search vendor "Vmware" for product "Vcenter Server" and version "6.7"		-		Affected
Vmware Search vendor "Vmware"		Vcenter Server Search vendor "Vmware" for product "Vcenter Server"				7.0 Search vendor "Vmware" for product "Vcenter Server" and version "7.0"		-		Affected