Detections
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VMSA-2020-0023 : VMware ESXi, Workstation, Fusion and NSX-T updates address multiple security vulnerabilities

critical Nessus Plugin ID 141757

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Synopsis

The remote VMware ESXi host is missing one or more security-related patches.

Description

a. ESXi OpenSLP remote code execution vulnerability (CVE-2020-3992)

OpenSLP as used in ESXi has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution.

c. TOCTOU out-of-bounds read vulnerability (CVE-2020-3981)

VMware ESXi contains an out-of-bounds read vulnerability due to a time-of-check time-of-use issue in ACPI device. A malicious actor with administrative access to a virtual machine may be able to exploit this issue to leak memory from the vmx process.

d. TOCTOU out-of-bounds write vulnerability (CVE-2020-3982)

VMware ESXi contains an out-of-bounds write vulnerability due to a time-of-check time-of-use issue in ACPI device. A malicious actor with administrative access to a virtual machine may be able to exploit this vulnerability to crash the virtual machine's vmx process or corrupt hypervisors memory heap.

f. VMCI host driver memory leak vulnerability (CVE-2020-3995)

The VMCI host drivers used by VMware hypervisors contain a memory leak vulnerability. A malicious actor with access to a virtual machine may be able to trigger a memory leak issue resulting in memory resource exhaustion on the hypervisor if the attack is sustained for extended periods of time.

Solution

Apply the missing patches.

See Also

http://lists.vmware.com/pipermail/security-announce/2020/000511.html

Plugin Details

Severity: Critical

ID: 141757

File Name: vmware_VMSA-2020-0023.nasl

Version: 1.8

Type: local

Published: 10/21/2020

Updated: 1/24/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2020-3992

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:vmware:esxi:6.5, cpe:/o:vmware:esxi:6.7, cpe:/o:vmware:esxi:7.0

Required KB Items: Host/local_checks_enabled, Host/VMware/release, Host/VMware/version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/20/2020

Vulnerability Publication Date: 10/20/2020

CISA Known Exploited Vulnerability Due Dates: 5/3/2022

Reference Information

CVE: CVE-2020-3981, CVE-2020-3982, CVE-2020-3992, CVE-2020-3995

IAVA: 2020-A-0468

VMSA: 2020-0023