SB2020102044 - Multiple vulnerabilities in VMware ESXi

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Main Vulnerability Database SB2020102044

SB2020102044 - Multiple vulnerabilities in VMware ESXi

Published: October 20, 2020 Updated: April 19, 2023

Security Bulletin ID SB2020102044
CSH Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 75% Medium 25%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2020-3981)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition due to a time-of-check time-of-use issue in ACPI device within the implementation of the BDOOR_CMD_PATCH_ACPI_TABLES command. A remote administrator on a guest OS can run a specially crafted program to read memory from the vmx process.


2) Out-of-bounds write (CVE-ID: CVE-2020-3982)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error caused by a time-of-check time-of-use issue in ACPI device within the implementation of the BDOOR_CMD_PATCH_ACPI_TABLES command. A remote administrator on the guest OS can run a specially crafted program to trigger a heap-based buffer overflow and crash the system or execute arbitrary code on the hypervisor.


3) Use-after-free (CVE-ID: CVE-2020-3992)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the OpenSLP service. A remote attacker can can send specially crafted SLP message to port 427/udp, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


4) Memory leak (CVE-ID: CVE-2020-3995)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak within the VMCI host driver. A remote attacker can force the application to leak memory and perform denial of service attack.


Remediation

Install update from vendor's website.

References