Citrix XenServer Multiple Security Updates (CTX228867)

###############################################################################
# OpenVAS Vulnerability Test
#
# Citrix XenServer Multiple Security Updates (CTX228867)
#
# Authors:
# Christian Kuersteiner <[email protected]>
#
# Copyright:
# Copyright (C) 2017 Greenbone Networks GmbH
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

CPE = "cpe:/a:citrix:xenserver";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.140421");
  script_version("2020-04-02T13:53:24+0000");
  script_tag(name:"last_modification", value:"2020-04-02 13:53:24 +0000 (Thu, 02 Apr 2020)");
  script_tag(name:"creation_date", value:"2017-10-16 09:49:18 +0700 (Mon, 16 Oct 2017)");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");

  script_cve_id("CVE-2017-15595", "CVE-2017-15588", "CVE-2017-15593", "CVE-2017-15592", "CVE-2017-15594",
                "CVE-2017-15590", "CVE-2017-15589");

  script_tag(name:"qod_type", value:"package");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Citrix XenServer Multiple Security Updates (CTX228867)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_family("Citrix Xenserver Local Security Checks");
  script_dependencies("gb_xenserver_version.nasl");
  script_mandatory_keys("xenserver/product_version", "xenserver/patches");

  script_tag(name:"summary", value:"A number of security vulnerabilities have been identified in Citrix
  XenServer that may allow a malicious administrator of a guest VM to compromise the host.");

  script_tag(name:"insight", value:"The following vulnerabilities have been addressed:

  - CVE-2017-15595: Unlimited recursion in linear pagetable de-typing

  - CVE-2017-15588: Stale TLB entry due to page type release race

  - CVE-2017-15593: page type reference leak on x86

  - CVE-2017-15592: x86: Incorrect handling of self-linear shadow mappings with translated guests

  - CVE-2017-15594: x86: Incorrect handling of IST settings during CPU hotplug

  - CVE-2017-15590: multiple MSI mapping issues on x86

  - CVE-2017-15589: hypervisor stack leak in x86 I/O intercept code

  For customers that do not have PV-based guests, are not using PCI passthrough and are using hardware with HAP
  support, the risk is reduced to a disclosure of a small part of the hypervisor stack.");

  script_tag(name:"affected", value:"XenServer versions 7.2, 7.1, 7.0, 6.5, 6.2.0, 6.0.2.");

  script_tag(name:"solution", value:"Apply the hotfix referenced in the advisory.");

  script_tag(name:"vuldetect", value:"Check the installed hotfixes.");

  script_xref(name:"URL", value:"https://support.citrix.com/article/CTX228867");

  exit(0);
}

include("citrix_version_func.inc");
include("host_details.inc");
include("misc_func.inc");

if (!version = get_app_version(cpe: CPE))
  exit(0);

if (!hotfixes = get_kb_item("xenserver/patches"))
  exit(0);

patches = make_array();

patches['7.2.0'] = make_list('XS72E008');
patches['7.1.0'] = make_list('XS71E016');
patches['7.0.0'] = make_list('XS70E046');
patches['6.5.0'] = make_list('XS65ESP1062');
patches['6.2.0'] = make_list('XS62ESP1065');
patches['6.0.2'] = make_list('XS602ECC049');

citrix_xenserver_check_report_is_vulnerable(version: version, hotfixes: hotfixes, patches: patches);

exit(99);