VMware ESXi Guest RPC Null Pointer Dereference Vulnerability (VMSA-2017-0015)

# SPDX-FileCopyrightText: 2017 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.811840");
  script_version("2023-07-25T05:05:58+0000");
  script_cve_id("CVE-2017-4925");
  script_tag(name:"cvss_base", value:"2.1");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"last_modification", value:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-02-03 19:44:00 +0000 (Thu, 03 Feb 2022)");
  script_tag(name:"creation_date", value:"2017-09-22 12:05:44 +0530 (Fri, 22 Sep 2017)");
  script_tag(name:"qod_type", value:"package");
  script_name("VMware ESXi Guest RPC Null Pointer Dereference Vulnerability (VMSA-2017-0015)");

  script_tag(name:"summary", value:"VMware ESXi is prone to a NULL pointer dereference vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if the target host is missing one or more patch(es).");

  script_tag(name:"insight", value:"The flaw is due to an error in handling
  guest RPC requests.");

  script_tag(name:"impact", value:"Successful exploitation will allow attackers
  with normal user privileges to crash their VMs.");

  script_tag(name:"affected", value:"VMware ESXi 6.5 before ESXi650-201707101-SG

  VMware ESXi 6.0 before ESXi600-201706101-SG

  VMware ESXi 5.5 before ESXi550-201709101-SG");

  script_tag(name:"solution", value:"Apply the missing patch(es).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_xref(name:"URL", value:"https://www.vmware.com/security/advisories/VMSA-2017-0015.html");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/100842");
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_category(ACT_GATHER_INFO);
  script_family("VMware Local Security Checks");
  script_dependencies("gb_vmware_esxi_init.nasl");
  script_mandatory_keys("VMware/ESXi/LSC", "VMware/ESX/version");

  exit(0);
}

include("vmware_esx.inc");
include("version_func.inc");

if(!get_kb_item("VMware/ESXi/LSC"))
  exit(0);

if(!esxVersion = get_kb_item("VMware/ESX/version"))
  exit(0);

# https://esxi-patches.v-front.de/ESXi-6.5.0.html
# https://esxi-patches.v-front.de/ESXi-6.0.0.html
# https://esxi-patches.v-front.de/ESXi-5.5.0.html
patches = make_array("6.5.0", "VIB:esx-base:6.5.0-0.23.5969300",
                     "6.0.0", "VIB:esx-base:6.0.0-3.66.5485776",
                     "5.5.0", "VIB:esx-base:5.5.0-3.103.6480267");

if(!patches[esxVersion])
  exit(99);

if(report = esxi_patch_missing(esxi_version:esxVersion, patch:patches[esxVersion])) {
  security_message(port:0, data:report);
  exit(0);
}

exit(99);