VMSA-2020-0011 : VMware ESXi updates address multiple security vulnerabilities

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from VMware Security Advisory 2020-0011. 
# The text itself is copyright (C) VMware Inc.
#

include('compat.inc');

if (description)
{
  script_id(137047);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/08");

  script_cve_id("CVE-2020-3958", "CVE-2020-3959");
  script_xref(name:"VMSA", value:"2020-0011");
  script_xref(name:"IAVA", value:"2020-A-0234");

  script_name(english:"VMSA-2020-0011 : VMware ESXi updates address multiple security vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"The remote VMware ESXi host is missing one or more security-related
patches.");
  script_set_attribute(attribute:"description", value:
"b. Denial-of-service vulnerability in Shader functionality (CVE-2020-3958)

Description :
VMware ESXi, Workstation and Fusion contain a denial-of-service
vulnerability in the shader functionality. Exploitation of this issue
requires an attacker to have access to a virtual machine with 3D
graphics enabled. It is not enabled by default on ESXi.

Successful exploitation of this issue may allow attackers with
non-administrative access to a virtual machine to crash the virtual
machine's vmx process leading to a denial of service condition.

c. Memory leak vulnerability in VMCI module (CVE-2020-3959)
Description :

VMware ESXi, Workstation and Fusion contain a memory leak
vulnerability in the VMCI module.
 
A malicious actor with local non-administrative access to a virtual
machine may be able to crash the virtual machine's vmx process leading
to a partial denial of service.");
  script_set_attribute(attribute:"see_also", value:"http://lists.vmware.com/pipermail/security-announce/2020/000496.html");
  script_set_attribute(attribute:"solution", value:
"Apply the missing patches.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P");
  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:U/C:N/I:N/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-2020-3959");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-3958");

  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:"2020/05/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi:6.5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi:6.7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"VMware ESX Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/VMware/release", "Host/VMware/version");
  script_require_ports("Host/VMware/esxupdate", "Host/VMware/esxcli_software_vibs");

  exit(0);
}


include("audit.inc");
include("vmware_esx_packages.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/VMware/release")) audit(AUDIT_OS_NOT, "VMware ESX / ESXi");
if (
  !get_kb_item("Host/VMware/esxcli_software_vibs") &&
  !get_kb_item("Host/VMware/esxupdate")
) audit(AUDIT_PACKAGE_LIST_MISSING);


init_esx_check(date:"2020-05-28");
flag = 0;


if (esx_check(ver:"ESXi 6.5", vib:"VMware:esx-base:6.5.0-3.126.16207673")) flag++;
if (esx_check(ver:"ESXi 6.5", vib:"VMware:esx-tboot:6.5.0-3.126.16207673")) flag++;
if (esx_check(ver:"ESXi 6.5", vib:"VMware:vsan:6.5.0-3.126.15965595")) flag++;
if (esx_check(ver:"ESXi 6.5", vib:"VMware:vsanhealth:6.5.0-3.126.15965596")) flag++;

if (esx_check(ver:"ESXi 6.7", vib:"VMware:esx-base:6.7.0-3.99.15999342")) flag++;
if (esx_check(ver:"ESXi 6.7", vib:"VMware:esx-update:6.7.0-3.99.15999342")) flag++;
if (esx_check(ver:"ESXi 6.7", vib:"VMware:vsan:6.7.0-3.99.15853015")) flag++;
if (esx_check(ver:"ESXi 6.7", vib:"VMware:vsanhealth:6.7.0-3.99.15853016")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:esx_report_get());
  else security_note(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");