VMware Tools for Linux 10.3.x < 10.3.26 Authentication Bypass (VMSA-2023-0019)

high Nessus Plugin ID 186616


The virtualization tool suite is installed on the remote Linux host is affected by an authentication bypass vulnerability.


The version of VMware Tools installed on the remote Linux host is 10.3.x prior to 10.3.26. It is, therefore, affected by a SAML token signature bypass vulnerability. A malicious attacker with man-in-the-middle network positioning in the virtual machine network can bypass SAML token signature verification resulting in being able to perform VMware Tools Guest Operations.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Upgrade to VMware Tools version 10.3.26 or later.

See Also


Plugin Details

Severity: High

ID: 186616

File Name: vmware_tools_linux_vmsa-2023-0019.nasl

Version: 1.3

Type: local

Agent: unix

Family: Misc.

Published: 12/6/2023

Updated: 12/19/2023

Supported Sensors: Nessus Agent, Nessus

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2023-20900


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/a:vmware:tools

Required KB Items: Host/OS/uname, installed_sw/VMware Tools

Exploit Ease: No known exploits are available

Patch Publication Date: 8/31/2023

Vulnerability Publication Date: 8/31/2023

Reference Information

CVE: CVE-2023-20900

IAVA: 2023-A-0450-S

VMSA: 2023-0019