CVE-2020-3957

Severity Score

7.0

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

VMware Fusion (11.x before 11.5.5), VMware Remote Console for Mac (11.x and prior) and VMware Horizon Client for Mac (5.x and prior) contain a local privilege escalation vulnerability due to a Time-of-check Time-of-use (TOCTOU) issue in the service opener. Successful exploitation of this issue may allow attackers with normal user privileges to escalate their privileges to root on the system where Fusion, VMRC and Horizon Client are installed.

VMware Fusion (versiones 11.x anteriores a 11.5.5), VMware Remote Console para Mac (versiones anteriores a 11.x ) y VMware Horizon Client para Mac (versiones anteriores a 5.x), contienen una vulnerabilidad de escalada de privilegios local debido a un problema de tipo Time-of-check Time-of-use (TOCTOU) en el abridor de servicio. Una explotación con éxito de este problema puede permitir a atacantes con privilegios de usuario normal escalar sus privilegios a root en el sistema donde están instalados Fusion, VMRC y Horizon Client.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-30 CVE Reserved
2020-05-29 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.vmware.com/security/advisories/VMSA-2020-0011.html	2021-09-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Vmware Search vendor "Vmware"	Fusion Search vendor "Vmware" for product "Fusion"	>= 11.0.0 < 11.5.5 Search vendor "Vmware" for product "Fusion" and version " >= 11.0.0 < 11.5.5"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Vmware Search vendor "Vmware"	Horizon Client Search vendor "Vmware" for product "Horizon Client"	<= 5.4.0 Search vendor "Vmware" for product "Horizon Client" and version " <= 5.4.0"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Vmware Search vendor "Vmware"	Remote Console Search vendor "Vmware" for product "Remote Console"	<= 11.0.1 Search vendor "Vmware" for product "Remote Console" and version " <= 11.0.1"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe