Security Updates for Microsoft Office Viewer Products / Office Compatibility Products (October 2018)

#
# The descriptive text and package checks in this plugin were
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#
include("compat.inc");

if (description)
{
  script_id(118012);
  script_version("1.3");
  script_cvs_date("Date: 2019/11/01");

  script_cve_id("CVE-2018-8427", "CVE-2018-8432", "CVE-2018-8501");
  script_xref(name:"MSKB", value:"4092444");
  script_xref(name:"MSKB", value:"4092464");
  script_xref(name:"MSKB", value:"4022138");
  script_xref(name:"MSFT", value:"MS18-4092444");
  script_xref(name:"MSFT", value:"MS18-4092464");
  script_xref(name:"MSFT", value:"MS18-4022138");

  script_name(english:"Security Updates for Microsoft Office Viewer Products / Office Compatibility Products (October 2018)");
  script_summary(english:"Checks for Microsoft security updates.");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Office Viewer Products are affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Office Viewer Products are missing security
updates. It is, therefore, affected by multiple
vulnerabilities :

  - A remote code execution vulnerability exists in
    Microsoft PowerPoint software when the software fails to
    properly handle objects in Protected View. An attacker
    who successfully exploited the vulnerability could run
    arbitrary code in the context of the current user. If
    the current user is logged on with administrative user
    rights, an attacker could take control of the affected
    system. An attacker could then install programs; view,
    change, or delete data; or create new accounts with full
    user rights.  (CVE-2018-8501)

  - A remote code execution vulnerability exists in the way
    that Microsoft Graphics Components handle objects in
    memory. An attacker who successfully exploited the
    vulnerability could execute arbitrary code on a target
    system.  (CVE-2018-8432)

  - An information disclosure vulnerability exists in the
    way that Microsoft Graphics Components handle objects in
    memory. An attacker who successfully exploited the
    vulnerability could obtain information that could be
    useful for further exploitation.  (CVE-2018-8427)");
  # https://support.microsoft.com/en-us/help/4092444/description-of-the-security-update-for-microsoft-office-viewers-and-of
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6fec1d1c");
  # https://support.microsoft.com/en-us/help/4092464/description-of-the-security-update-for-word-viewer-october-9-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bbf28366");
  # https://support.microsoft.com/en-us/help/4022138/description-of-the-security-update-for-powerpoint-viewer-2010-october
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fcb8a25d");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:  
  -KB4092444
  -KB4092464
  -KB4022138");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/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:N/AC:L/PR:N/UI:R/S:U/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-2018-8501");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/10/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/10/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel_viewer");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("office_installed.nasl", "microsoft_office_compatibility_pack_installed.nbin", "smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_reg_query.inc");
include("misc_func.inc");
include("install_func.inc");

global_var vuln;

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS18-10";
kbs = make_list(
  '4022138', # PowerPoint Viewer 2010
  '4092444', # Office Compat Pack
  '4092464'  # Word Viewer
);

if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

get_kb_item_or_exit("SMB/Registry/Enumerated", exit_code:1);

vuln = FALSE;
port = kb_smb_transport();

######################################################################
# PowerPoint Viewer
######################################################################
function perform_powerpoint_viewer_checks()
{
  var ppt_vwr_checks = make_array(
    "14.0", make_array("version", "14.0.7214.5000", "kb", "4022138")
  );
  if (hotfix_check_office_product(product:"PowerPointViewer", display_name:"PowerPoint Viewer", checks:ppt_vwr_checks, bulletin:bulletin))
    vuln = TRUE;
}

######################################################################
# Excel Viewer
######################################################################
function perform_excel_viewer_checks()
{
  var install, installs, path, prod, common_path;
  prod = "Microsoft Excel/PowerPoint Viewer and Office Compatibility Products";

  installs = get_kb_list("SMB/Office/ExcelViewer/*/ProductPath");
  foreach install (keys(installs))
  {
    common_path = installs[install];
    common_path = ereg_replace(pattern:"^([A-Za-z]:.*)\\Microsoft Office.*", replace:"\1\Common Files", string:common_path);

    path = hotfix_append_path(
      path  : common_path,
      value : "Microsoft Shared\Office12"
    );

    if (hotfix_check_fversion(file:"ogl.dll", version:"12.0.6803.5000", path:path, kb:"4092444", product:prod) == HCF_OLDER)
      vuln = TRUE;
  }
}

######################################################################
# Word Viewer
######################################################################
function perform_word_viewer_checks()
{
  var install, installs, path, prod;
  prod = "Microsoft Word Viewer";

  installs = get_kb_list("SMB/Office/WordViewer/*/ProductPath");
  foreach install (keys(installs))
  {
    path = installs[install];
    path = ereg_replace(pattern:"^([A-Za-z]:.*)\\[wW]ordview.exe", replace:"\1", string:path);

    if (hotfix_check_fversion(file:"gdiplus.dll", version:"11.0.8451.0", path:path, kb:"4092464", product:prod) == HCF_OLDER)
      vuln = TRUE;
  }
}

######################################################################
# MAIN
######################################################################
perform_powerpoint_viewer_checks();
perform_excel_viewer_checks();
perform_word_viewer_checks();

if (vuln)
{
  replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}