VMware ESXi 7.x < 7.0 Update 3w / 8.x < 8.0 Update 2e / 8.0 Update 3 < 8.0 Update 3f (VMSA-2025-0013)

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

include('compat.inc');

if (description)
{
  script_id(242168);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/16");

  script_cve_id(
    "CVE-2025-41236",
    "CVE-2025-41237",
    "CVE-2025-41238",
    "CVE-2025-41239"
  );
  script_xref(name:"IAVA", value:"2025-A-0539");

  script_name(english:"VMware ESXi 7.x < 7.0 Update 3w / 8.x < 8.0 Update 2e / 8.0 Update 3 < 8.0 Update 3f (VMSA-2025-0013)");

  script_set_attribute(attribute:"synopsis", value:
"VMware ESXi is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of VMware ESXi installed on the remote host is 7.x prior to 7.0 Update 3w, 8.x prior to 8.0 Update 2e, or
8.0 Update 3 prior to 8.0 Update 3f. It is, therefore, affected by multiple vulnerabilities as referenced in the
VMSA-2025-0013 advisory:

  - VMware ESXi, Workstation, and Fusion contain an integer-overflow vulnerability in the VMXNET3 virtual network
    adapter. (CVE-2025-41236)

  - VMware ESXi, Workstation, and Fusion contain an integer-underflow in VMCI (Virtual Machine Communication Interface)
    that leads to an out-of-bounds write. (CVE-2025-41237)

  - VMware ESXi, Workstation, and Fusion contain a heap-overflow vulnerability in the PVSCSI (Paravirtualized SCSI)
    controller that leads to an out of-bounds write. (CVE-2025-41238)

  - VMware ESXi, Workstation, Fusion, and VMware Tools contains an information disclosure vulnerability due to the usage
    of an uninitialised memory in vSockets. (CVE-2025-41239)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/35877
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?98207605");
  script_set_attribute(attribute:"solution", value:
"Upgrade to VMware ESXi 7.0 Update 3w, 8.0 Update 2e, or 8.0 Update 3f or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-41236");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/07/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/07/16");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi");
  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) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("vmware_vsphere_detect.nbin");
  script_require_keys("Host/VMware/release", "Host/VMware/vsphere");

  exit(0);
}

var fixes = make_array(
    '7.0.0', 24784741,
    '7.0.1', 24784741,
    '7.0.2', 24784741,
    '7.0.3', 24784741,
    '8.0.0', 24789317,
    '8.0.1', 24789317,
    '8.0.2', 24789317,
    '8.0.3', 24784735
);

var fixed_display = make_array(
    '7.0.0', '7.0U3w 24784741',
    '7.0.1', '7.0U3w 24784741',
    '7.0.2', '7.0U3w 24784741',
    '7.0.3', '7.0U3w 24784741',
    '8.0.0', '8.0U2e 24789317',
    '8.0.1', '8.0U2e 24789317',
    '8.0.2', '8.0U2e 24789317',
    '8.0.3', '8.0U3f 24784735'
);

var rel = get_kb_item_or_exit('Host/VMware/release');
if ('ESXi' >!< rel) audit(AUDIT_OS_NOT, 'ESXi');

var port  = get_kb_item_or_exit('Host/VMware/vsphere');

var match = pregmatch(pattern:"^VMware ESXi?o? ([0-9]+\.[0-9]+\.[0-9]+)", string:rel);
if (isnull(match)) audit(AUDIT_UNKNOWN_BUILD, 'VMware ESXi', '7.0 / 8.0');
var ver = match[1];

if (ver !~ "^((7|8)\.0)") audit(AUDIT_OS_NOT, 'ESXi 7.0 / 8.0');

var fixed_build = fixes[ver];

if (empty_or_null(fixed_build)) audit(AUDIT_VER_FORMAT, ver);

# 24416880 is a special ESX build for Mobility Agent 
if ("24416880" >< rel) audit(AUDIT_INST_VER_NOT_VULN, 'VMware ESXi', ver);

match = pregmatch(pattern:"^VMware ESXi?o?.*[Bb]uild[- ]([0-9]+)$", string:rel);
if (isnull(match)) audit(AUDIT_UNKNOWN_BUILD, 'VMware ESXi', '7.0 / 8.0');

var build = int(match[1]);

if (build >= fixed_build) audit(AUDIT_INST_VER_NOT_VULN, 'VMware ESXi', ver + ' build ' + build);

var report = '\n  ESXi version    : ' + ver +
         '\n  Installed build : ' + build +
         '\n  Fixed build     : ' + fixed_display[ver] +
         '\n';

security_report_v4(port:port, severity:SECURITY_HOLE, extra:report);