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nessusThis script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.VMWARE_TOOLS_LINUX_VMSA-2023-0019.NASL
HistoryDec 06, 2023 - 12:00 a.m.

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

2023-12-0600:00:00
This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
12
vmware
authentication bypass
linux
vulnerability
saml
man-in-the-middle
network
guest operations

7.5 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

8.1 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

45.0%

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.

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(186616);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/19");

  script_cve_id("CVE-2023-20900");
  script_xref(name:"VMSA", value:"2023-0019");
  script_xref(name:"IAVA", value:"2023-A-0450-S");

  script_name(english:"VMware Tools for Linux 10.3.x < 10.3.26 Authentication Bypass (VMSA-2023-0019)");

  script_set_attribute(attribute:"synopsis", value:
"The virtualization tool suite is installed on the remote Linux host is affected by an authentication bypass
vulnerability.");
  script_set_attribute(attribute:"description", value:
"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.");
  script_set_attribute(attribute:"see_also", value:"https://www.vmware.com/security/advisories/VMSA-2023-0019.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to VMware Tools version 10.3.26 or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:H/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-20900");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/08/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/08/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/12/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:vmware:tools");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("os_fingerprint.nasl", "vmware_tools_nix_installed.nbin");
  script_require_keys("Host/OS/uname", "installed_sw/VMware Tools");

  exit(0);
}

include('vcf.inc');

get_kb_item_or_exit("Host/OS/uname");

var app_info = vcf::get_app_info(app:'VMware Tools');
var constraints = [{ 'min_version' : '10.3', 'fixed_version' : '10.3.26' }];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);

VendorProductVersionCPE
vmwaretoolscpe:/a:vmware:tools

7.5 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

8.1 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

45.0%