ESXi 6.5 / 6.7 / 7.0 Multiple Vulnerabilities (VMSA-2022-0030)

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

include('compat.inc');

if (description)
{
  script_id(168828);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/05/18");

  script_cve_id("CVE-2022-31696", "CVE-2022-31699");
  script_xref(name:"VMSA", value:"2022-0030");
  script_xref(name:"IAVA", value:"2022-A-0513");

  script_name(english:"ESXi 6.5 / 6.7 / 7.0 Multiple Vulnerabilities (VMSA-2022-0030)");

  script_set_attribute(attribute:"synopsis", value:
"The remote VMware ESXi host is missing a security patch and is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote VMware ESXi host is version 6.5, 6.7 or 7.0 and is affected by multiple vulnerabilities, as follows:

  - A memory corruption issue that can lead to an escape of the ESXi sandbox. (CVE-2022-31696)

  - A heap overflow vulnerability that can be exploited to disclose information. (CVE-2022-31699)

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-2022-0030.html");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate patch or workaround as referenced in the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/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:L/AC:L/PR:L/UI:N/S:C/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-2022-31696");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/12/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/12/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/12/15");

  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) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

var fixes = make_array(
  '6.5', '20502893', # ESXi650-202210001
  '6.7', '20497097', # ESXi670-202210001
  # Install containing only the security patch has been
  # observed, so using the security-fix version below.
  '7.0', '20841705'  # ESXi 7.0 Update 3i
);

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

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

var match = pregmatch(pattern:"^ESXi? ([0-9]+\.[0-9]+).*$", string:ver);
if (isnull(match)) audit(AUDIT_UNKNOWN_BUILD, 'VMware ESXi', '6.5 / 6.7 / 7.0 / 8.0');
ver = match[1];

if (ver !~ "^(7\.0|6\.(5|7))$") audit(AUDIT_OS_NOT, 'ESXi 6.5 / 6.7 / 7.0');

var fixed_build = int(fixes[ver]);

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

match = pregmatch(pattern:"^VMware ESXi.*build-([0-9]+)$", string:rel);
if (isnull(match)) audit(AUDIT_UNKNOWN_BUILD, 'VMware ESXi', '6.5 / 6.7 / 7.0');

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_build +
         '\n';

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