Vulnerabilities > CVE-2016-3381 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Microsoft Excel, Excel Viewer and Office Compatibility Pack

047910
CVSS 7.8 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
local
low complexity
microsoft
CWE-119
nessus
NVD
Published: 2016-09-14
Updated: 2018-10-12

Summary

Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Office Compatibility Pack SP3, and Excel Viewer allow remote attackers to execute arbitrary code via a crafted document, aka "Microsoft Office Memory Corruption Vulnerability," a different vulnerability than CVE-2016-3363.

Vulnerable Configurations

Part Description Count
Application
Microsoft
7

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Msbulletin

bulletin_idMS16-107
bulletin_url
date2016-09-13T00:00:00
impactRemote Code Execution
knowledgebase_id3185852
knowledgebase_url
severityCritical
titleSecurity Update for Microsoft Office

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS16-107.NASL
descriptionThe Microsoft Office application installed on the remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - An information disclosure vulnerability exists in the the Click-to-Run (C2R) components due to improper handling of objects in memory. An authenticated, remote attacker can exploit this, via a specially crafted application, to obtain sensitive information and thereby bypass the Address Space Layout Randomization (ASLR) security feature. (CVE-2016-0137) - An information disclosure vulnerability exists due to Visual Basic macros improperly exporting a user
last seen2020-06-01
modified2020-06-02
plugin id93481
published2016-09-14
reporterThis script is Copyright (C) 2016-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/93481
titleMS16-107: Security Update for Microsoft Office (3185852)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(93481);
  script_version("1.7");
  script_cvs_date("Date: 2018/07/30 15:31:34");

  script_cve_id(
    "CVE-2016-0137",
    "CVE-2016-0141",
    "CVE-2016-3357",
    "CVE-2016-3358",
    "CVE-2016-3359",
    "CVE-2016-3360",
    "CVE-2016-3361",
    "CVE-2016-3362",
    "CVE-2016-3363",
    "CVE-2016-3364",
    "CVE-2016-3365",
    "CVE-2016-3366",
    "CVE-2016-3381"
  );
  script_bugtraq_id(
    92785,
    92786,
    92791,
    92795,
    92796,
    92798,
    92799,
    92801,
    92803,
    92804,
    92805,
    92831,
    92903
  );
  script_xref(name:"MSFT", value:"MS16-107");
  script_xref(name:"MSKB", value:"2553432");
  script_xref(name:"MSKB", value:"2597974");
  script_xref(name:"MSKB", value:"3054862");
  script_xref(name:"MSKB", value:"3054969");
  script_xref(name:"MSKB", value:"3114744");
  script_xref(name:"MSKB", value:"3115112");
  script_xref(name:"MSKB", value:"3115119");
  script_xref(name:"MSKB", value:"3115169");
  script_xref(name:"MSKB", value:"3115443");
  script_xref(name:"MSKB", value:"3115459");
  script_xref(name:"MSKB", value:"3115462");
  script_xref(name:"MSKB", value:"3115463");
  script_xref(name:"MSKB", value:"3115466");
  script_xref(name:"MSKB", value:"3115467");
  script_xref(name:"MSKB", value:"3115472");
  script_xref(name:"MSKB", value:"3115487");
  script_xref(name:"MSKB", value:"3118268");
  script_xref(name:"MSKB", value:"3118270");
  script_xref(name:"MSKB", value:"3118280");
  script_xref(name:"MSKB", value:"3118284");
  script_xref(name:"MSKB", value:"3118290");
  script_xref(name:"MSKB", value:"3118292");
  script_xref(name:"MSKB", value:"3118293");
  script_xref(name:"MSKB", value:"3118297");
  script_xref(name:"MSKB", value:"3118299");
  script_xref(name:"MSKB", value:"3118300");
  script_xref(name:"MSKB", value:"3118303");
  script_xref(name:"MSKB", value:"3118309");
  script_xref(name:"MSKB", value:"3118313");
  script_xref(name:"MSKB", value:"3118316");
  script_xref(name:"IAVA", value:"2016-A-0243");

  script_name(english:"MS16-107: Security Update for Microsoft Office (3185852)");
  script_summary(english:"Checks the file versions.");

  script_set_attribute(attribute:"synopsis",value:
"An application installed on the remote host is affected by multiple
vulnerabilities.");
  script_set_attribute(attribute:"description",value:
"The Microsoft Office application installed on the remote Windows host
is missing a security update. It is, therefore, affected by multiple
vulnerabilities :

  - An information disclosure vulnerability exists in the
    the Click-to-Run (C2R) components due to improper
    handling of objects in memory. An authenticated, remote
    attacker can exploit this, via a specially crafted
    application, to obtain sensitive information and thereby
    bypass the Address Space Layout Randomization (ASLR)
    security feature. (CVE-2016-0137)

  - An information disclosure vulnerability exists due to
    Visual Basic macros improperly exporting a user's private
    key from the certificate store while saving a document.
    An unauthenticated, remote attacker can exploit this,
    by convincing a user to provide the saved document, to
    gain access to the user's private key. (CVE-2016-0141)

  - Multiple remote code execution vulnerabilities exist in
    Microsoft Office software due to improper handling of
    objects in memory. A remote attacker can exploit these,
    by convincing a user to open a specially crafted Office
    file, to execute arbitrary code in the context of the
    current user. (CVE-2016-3357, CVE-2016-3358,
    CVE-2016-3359, CVE-2016-3360, CVE-2016-3361,
    CVE-2016-3362, CVE-2016-3363, CVE-2016-3364,
    CVE-2016-3365, CVE-2016-3381)

  - A spoofing vulnerability exists in Microsoft Outlook due
    to a failure to conform to RFC2046 and properly identify
    the end of a MIME attachment. An unauthenticated, remote
    attacker can exploit this, by convincing a user to open
    a specially crafted email attachment, to cause antivirus
    or antispam security features to fail. (CVE-2016-3366)");
   script_set_attribute(attribute:"see_also",value:"https://technet.microsoft.com/library/security/MS16-107");
  script_set_attribute(attribute:"solution",value:
"Microsoft has released a set of patches for Microsoft Office 2007,
2010, 2013, 2013 RT, and 2016; Microsoft Excel 2007, 2010, 2013, 2013
RT, and 2016; Microsoft PowerPoint 2007, 2010, 2013, and 2013 RT;
Microsoft Outlook 2007, 2010, 2013, 2013 RT, and 2016; Microsoft Visio
2016; Office Compatibility Pack; Excel Viewer; PowerPoint Viewer; Word
Viewer; Microsoft SharePoint Server 2007, 2010, and 2013; Office Web
Apps 2010 and 2013; and Office Online Server.");
  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:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date",value:"2016/09/13");
  script_set_attribute(attribute:"patch_publication_date",value:"2016/09/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/09/14");

  script_set_attribute(attribute:"plugin_type",value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:visio");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:outlook");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_web_apps");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_server");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_online_server");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2016-2018 Tenable Network Security, Inc.");

  script_dependencies(
    "office_installed.nasl",
    "microsoft_owa_installed.nbin",
    "microsoft_sharepoint_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("audit.inc");
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 bulletin, vuln;

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS16-107';
kbs = make_list(
  '2553432', # Office 2010 SP2 #
  '2597974', # PowerPoint Compatibility Pack SP3 #
  '3054862', # SharePoint Server 2013 SP1 #
  '3054969', # PowerPoint Viewer #
  '3114744', # PowerPoint 2007 SP3 #
  '3115112', # SharePoint Excel Services 2007 SP3 #
  '3115119', # SharePoint Excel Services 2010 SP2
  '3115169', # SharePoint Excel Automation Services 2013 SP1 #
  '3115443', # SharePoint Word Automation Services 2013 SP1 #
  '3115459', # Excel 2007 SP3 #
  '3115462', # Office Compatability Pack SP3 #
  '3115463', # Excel Viewer #
  '3115466', # SharePoint Word Automation Services 2010 SP2 #
  '3115467', # PowerPoint 2010 SP2 #
  '3115472', # Office Web Apps 2010 SP2 #
  '3115487', # PowerPoint 2013 SP1 #
  '3118268', # Office 2013 SP1 #
  '3118270', # Office Web Apps 2013 SP1 #
  '3118280', # Outlook 2013 SP1 #
  '3118284', # Excel 2013 SP1 #
  '3118290', # Excel 2016 #
  '3118292', # Office 2016 #
  '3118293', # Outlook 2016 #
  '3118297', # Word Viewer #
  '3118299', # Office Online Server #
  '3118300', # Office 2007 SP3 #
  '3118303', # Outlook 2007 SP3 #
  '3118309', # Office 2010 SP2 #
  '3118313', # Outlook 2010 SP3 #
  '3118316'  # Excel 2010 SP2 #
);

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);

# Get path information for Windows.
windir = hotfix_get_systemroot();
if (isnull(windir)) exit(1, "Failed to determine the location of %windir%.");

registry_init();

global_var office_online_server_path;

hklm = registry_hive_connect(hive:HKEY_LOCAL_MACHINE, exit_on_fail:TRUE);
office_online_server_path = get_registry_value(
  handle : hklm,
  item   : "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Office16.WacServer\InstallLocation"
);

RegCloseKey(handle:hklm);
close_registry(close:FALSE);

vuln = FALSE;

function perform_office_online_server_checks()
{
  local_var path;
  if(office_online_server_path)
  {
    path = hotfix_append_path(path:office_online_server_path, value:"WordConversionService\bin\Converter");
    if (hotfix_check_fversion(file:"sword.dll", version:"16.0.7323.2225", min_version:"16.0.6000.0", path:path, bulletin:bulletin, kb:"3118299", product:"Office Online Server") == HCF_OLDER)
      vuln = TRUE;
  }
}

######################################################################
# Office Web Apps
######################################################################
function perform_owa_checks()
{
  local_var owa_installs, owa_install;
  local_var owa_2010_path, owa_2010_sp;
  local_var owa_2013_path, owa_2013_sp;
  local_var path;

  # Get installs of Office Web Apps
  owa_installs = get_installs(app_name:"Microsoft Office Web Apps");
  if (!empty_or_null(owa_installs))
  {
    foreach owa_install (owa_installs[1])
    {
      if (owa_install["Product"] == "2010")
      {
        owa_2010_path = owa_install["path"];
        owa_2010_sp = owa_install["SP"];
      }
      else if (owa_install['Product'] == "2013")
      {
        owa_2013_path = owa_install['path'];
        owa_2013_sp = owa_install['SP'];
      }
    }
  }

  ######################################################################
  # Office Web Apps 2010 SP2
  ######################################################################
  if (owa_2010_path && (!isnull(owa_2010_sp) && owa_2010_sp == "2"))
  {
    path = hotfix_append_path(path:owa_2010_path, value:"14.0\WebServices\ConversionService\Bin\Converter");
    if (hotfix_check_fversion(file:"msoserver.dll", version:"14.0.7173.5000", min_version:"14.0.7015.1000", path:path, bulletin:bulletin, kb:"3115472", product:"Office Web Apps 2010") == HCF_OLDER)
      vuln = TRUE;
  }

  ######################################################################
  # Office Web Apps 2013 SP1
  ######################################################################
  if (owa_2013_path && (!isnull(owa_2013_sp) && owa_2013_sp == "1"))
  {
    path = hotfix_append_path(path:owa_2013_path, value:"WordConversionService\bin\Converter");
    if (hotfix_check_fversion(file:"sword.dll", version:"15.0.4859.1000", min_version:"15.0.4571.1500", path:path, bulletin:bulletin, kb:"3118270", product:"Office Web Apps 2013") == HCF_OLDER)
      vuln = TRUE;
  }
}

######################################################################
# SharePoint
######################################################################
function perform_sharepoint_checks()
{
  local_var sps_2007_path, sps_2007_sp, sps_2007_edition;
  local_var sps_2010_path, sps_2010_sp, sps_2010_edition;
  local_var sps_2013_path, sps_2013_sp, sps_2013_edition;
  local_var installs, install, path, commonfiles;

  installs = get_installs(app_name:"Microsoft SharePoint Server");

  foreach install (installs[1])
  {
    if (install['Product'] == "2007")
    {
      sps_2007_path = install['path'];
      sps_2007_sp = install['SP'];
      sps_2007_edition = install['Edition'];
    }
    else if (install["Product"] == "2010")
    {
      sps_2010_path = install['path'];
      sps_2010_sp = install['SP'];
      sps_2010_edition = install['Edition'];
    }
    else if (install['Product'] == "2013")
    {
      sps_2013_path = install['path'];
      sps_2013_sp = install['SP'];
      sps_2013_edition = install['Edition'];
    }
  }

  commonfiles = hotfix_get_commonfilesdir();
  if (!commonfiles) commonfiles = hotfix_get_commonfilesdirx86();

  ######################################################################
  # SharePoint Server 2013 SP1 - Word Automation Services
  ######################################################################
  if (sps_2013_path && sps_2013_sp == "1" && sps_2013_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2013_path, value:"Bin");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"15.0.4859.1000", min_version:"15.0.0.0", path:path, bulletin:bulletin, kb:"3115169", product:"Office SharePoint Server 2013 Excel Services") == HCF_OLDER)
    vuln = TRUE;

    path = hotfix_append_path(path:sps_2013_path, value:"WebServices\ConversionServices");
    if (hotfix_check_fversion(file:"sword.dll", version:"15.0.4859.1000", min_version:"15.0.0.0", path:path, bulletin:bulletin, kb:"3115443", product:"Office SharePoint Server 2013 Word Automation Services") == HCF_OLDER)
      vuln = TRUE;

    if (hotfix_check_fversion(file:"ppserver.dll", version:"15.0.4859.1000", path:path, bulletin:bulletin, kb:"3054862", product:"Office SharePoint Server 2013") == HCF_OLDER)
      vuln = TRUE;
  }

  ######################################################################
  # SharePoint Server 2007 SP3 - Excel Services
  ######################################################################
  if (sps_2007_path && sps_2007_sp == "3" && sps_2007_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2007_path, value:"Bin");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"12.0.6755.5000", path:path, bulletin:bulletin, kb:"3115112", product:"Office SharePoint Server 2007 Excel Services") == HCF_OLDER)
      vuln = TRUE;
  }

  ######################################################################
  # SharePoint Server 2010 SP2 - Word Automation Services
  ######################################################################
  if (sps_2010_path && sps_2010_sp == "2" && sps_2010_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2010_path, value:"WebServices\WordServer\Core");
    if (hotfix_check_fversion(file:"msoserver.dll", version:"14.0.7173.5000", path:path, bulletin:bulletin, kb:"3115466", product:"Office SharePoint Server 2010 Word Automation Services") == HCF_OLDER)
      vuln = TRUE;

    path = hotfix_append_path(path:sps_2010_path, value:"Bin");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"14.0.7173.5000", path:path, bulletin:bulletin, kb:"3115119", product:"Office SharePoint Server 2010 Excel Services") == HCF_OLDER)
      vuln = TRUE;
  }
}
 
function perform_office_checks()
{
  local_var office_vers, office_sp, common_path, path, prod, kb;
  office_vers = hotfix_check_office_version();

  ######################################################################
  # Office 2007 Checks
  ######################################################################
  if (office_vers["12.0"])
  {
    office_sp = get_kb_item("SMB/Office/2007/SP");
    if (!isnull(office_sp) && office_sp == 3)
    {
      prod = "Microsoft Office 2007 SP3";
      common_path = hotfix_get_officecommonfilesdir(officever:"12.0");

      path = hotfix_append_path(path:common_path, value:"Microsoft Shared\Office12");
      if (hotfix_check_fversion(file:"mso.dll", version:"12.0.6755.5000" , path:path, bulletin:bulletin, kb:"3118300", product:prod) == HCF_OLDER)
        vuln = TRUE;

      path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"12.0"), value:"Microsoft Office\Office12");
      if (hotfix_check_fversion(file:"outlmime.dll", version: "12.0.6755.5000" , path:path, bulletin:bulletin, kb:"3118303", product:"Outlook 2007 SP3") == HCF_OLDER)
        vuln = TRUE;

      if (hotfix_check_fversion(file:"ppcore.dll", version: "12.0.6755.5000" , path:path, bulletin:bulletin, kb:"3114744", product:"PowerPoint 2007 SP3") == HCF_OLDER)
        vuln = TRUE;
    }
  }

  ######################################################################
  # Office 2010 Checks
  ######################################################################
  if (office_vers["14.0"])
  {
    office_sp = get_kb_item("SMB/Office/2010/SP");
    if (!isnull(office_sp) && office_sp == 2)
    {
      prod = "Microsoft Office 2010 SP2";
      common_path = hotfix_get_officecommonfilesdir(officever:"14.0");

      path = hotfix_append_path(path:common_path, value:"Microsoft Shared\Office14");
      if (hotfix_check_fversion(file:"mso.dll", version:"14.0.7173.5000", path:path, bulletin:bulletin, kb:"3118309", product:prod) == HCF_OLDER)
        vuln = TRUE;

      path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"14.0"), value:"Microsoft Office\Office14");
      if (hotfix_check_fversion(file:"offowc.dll", version:"14.0.7173.5000", path:path, bulletin:bulletin, kb:"2553432", product:prod) == HCF_OLDER)
        vuln = TRUE;

      if (hotfix_check_fversion(file:"outlmime.dll", version: "14.0.7173.5000" , path:path, bulletin:bulletin, kb:"3118313", product:"Outlook 2010 SP2") == HCF_OLDER)
        vuln = TRUE;

      if (hotfix_check_fversion(file:"ppcore.dll", version: "14.0.7173.5000" , path:path, bulletin:bulletin, kb:"3115467", product:"PowerPoint 2010 SP2") == HCF_OLDER)
        vuln = TRUE;

      if ( "64" >< get_kb_item("SMB/Office/14.0/Bitness"))
      {
        path = hotfix_append_path(path:hotfix_get_commonfilesdirx86(), value:"Microsoft Shared\Office14");
        if (hotfix_check_fversion(file:"mso.dll", version:"14.0.7173.5000", path:path, bulletin:bulletin, kb:"3118309", product:prod) == HCF_OLDER)
          vuln = TRUE;
      }
    }
  }

  ######################################################################
  # Office 2013 Checks
  ######################################################################
  if (office_vers["15.0"])
  {
    office_sp = get_kb_item("SMB/Office/2013/SP");
    if (!isnull(office_sp) && int(office_sp) == 1)
    {
      prod = "Microsoft Office 2013 SP1";
      common_path = hotfix_get_officecommonfilesdir(officever:"15.0");

      path = hotfix_append_path(path:common_path, value:"Microsoft Shared\Office15");
      if (hotfix_check_fversion(file:"mso.dll", version: "15.0.4859.1000", path:path, bulletin:bulletin, kb:"3118268", product:prod) == HCF_OLDER)
        vuln = TRUE;

      if ( "64" >< get_kb_item("SMB/Office/15.0/Bitness"))
      {
        path = hotfix_append_path(path:hotfix_get_commonfilesdirx86(), value:"Microsoft Shared\Office15");
        if (hotfix_check_fversion(file:"mso.dll", version:"15.0.4859.1000", path:path, bulletin:bulletin, kb:"3118268", product:prod) == HCF_OLDER)
          vuln = TRUE;
      }
    }
  }

  ######################################################################
  # Office 2016 Checks
  ######################################################################
  if (office_vers["16.0"])
  {
    office_sp = get_kb_item("SMB/Office/2016/SP");
    if (!isnull(office_sp) && int(office_sp) == 0)
    {
      prod = "Microsoft Office 2016";
      path = hotfix_append_path(path:hotfix_get_officecommonfilesdir(officever:"16.0"), value:"Microsoft Shared\Office16");
      if (
        hotfix_check_fversion(file:"mso.dll", version:"16.0.4432.1000", channel:"MSI", channel_product:"Office", path:path, bulletin:bulletin, kb:"3118292", product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:"mso.dll", version:"16.0.6701.1041", channel:"Deferred", channel_version:"1602", channel_product:"Office", path:path, bulletin:bulletin, kb:"3118292", product:prod) == HCF_OLDER #||
##TODO
 #       hotfix_check_fversion(file:"mso.dll", version:"16.0.7127.1019", channel:"Current", channel_product:"Office", path:path, bulletin:bulletin, kb:"3118292", product:prod) == HCF_OLDER
      )
        vuln = TRUE;

      if ( "64" >< get_kb_item("SMB/Office/16.0/Bitness"))
      {
        path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"16.0"), value:"Microsoft Office\root\VFS\ProgramFilesCommonX86\Microsoft Shared\OFFICE16");
        if (
          hotfix_check_fversion(file:"mso.dll", version:"16.0.4432.1000", channel:"MSI", channel_product:"Office", path:path, bulletin:bulletin, kb:"3118292", product:prod) == HCF_OLDER ||
          hotfix_check_fversion(file:"mso.dll", version:"16.0.6701.1041",  channel:"Deferred", channel_version:"1602", channel_product:"Office", path:path, bulletin:bulletin, kb:"3118292", product:prod) == HCF_OLDER #||
##TODO
 #         hotfix_check_fversion(file:"mso.dll", version:"16.0.7127.1019", channel:"Current", channel_product:"Office", path:path, bulletin:bulletin, kb:"3118292", product:prod) == HCF_OLDER
        )
          vuln = TRUE;
      }
    }
  }
}

function perform_office_product_checks()
{
  local_var excel_checks, word_checks, onenote_checks, outlook_checks, ppt_vwr_checks, excel_compat_checks,excel_vwr_checks,powerpoint_checks;

  local_var installs, install, path; # For DLL checks

  ######################################################################
  # Excel Checks
  ######################################################################
  excel_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6755.5000", "kb", "3115459"),
    "14.0", make_array("sp", 2, "version", "14.0.7173.5000", "kb", "3118316"),
    "15.0", make_array("sp", 1, "version", "15.0.4859.1000", "kb", "3118284"),
    "16.0", make_nested_list(
      make_array("sp", 0, "version", "16.0.4432.1003", "channel", "MSI", "kb", "3118290"),
      make_array("sp", 0, "version", "16.0.6001.1090", "channel", "Deferred", "kb", "3118290"),
      make_array("sp", 0, "version", "16.0.6741.2071", "channel", "Deferred", "channel_version", "1602", "kb", "3118290"),
      make_array("sp", 0, "version", "16.0.6965.2084", "channel", "First Release for Deferred", "kb", "3118290"),
      make_array("sp", 0, "version", "16.0.7070.2058", "channel", "Current", "kb", "3118290")
    )
  );
  if (hotfix_check_office_product(product:"Excel", checks:excel_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Outlook Checks
  ######################################################################
  outlook_checks = make_array(
    "15.0", make_array("sp", 1, "version", "15.0.4859.1000", "kb", "3118280"),
    "16.0", make_nested_list(
      make_array("sp", 0, "version", "16.0.4432.1001", "channel", "MSI", "kb", "3118293"),
      make_array("sp", 0, "version", "16.0.6001.1090", "channel", "Deferred", "kb", "3118290"),
      make_array("sp", 0, "version", "16.0.6741.2071", "channel", "Deferred", "channel_version", "1602", "kb", "3118290"),
      make_array("sp", 0, "version", "16.0.6965.2084", "channel", "First Release for Deferred", "kb", "3118290"),
      make_array("sp", 0, "version", "16.0.7070.2058", "channel", "Current", "kb", "3118290")
    )
  );
  if (hotfix_check_office_product(product:"Outlook", checks:outlook_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Excel Viewer
  ######################################################################
  excel_vwr_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6755.5000", "kb", "3115463")
  );
  if (hotfix_check_office_product(product:"ExcelViewer", display_name:"Excel Viewer", checks:excel_vwr_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Word Viewer
  ######################################################################
  installs = get_kb_list("SMB/Office/WordViewer/*/ProductPath");
  if (!isnull(installs))
  {
    foreach install (keys(installs))
    {
      path = installs[install];
      path = ereg_replace(pattern:'^(.+)\\\\[^\\\\]+\\.exe$', replace:"\1\", string:path, icase:TRUE);
      if(hotfix_check_fversion(path:path, file:"mso.dll", version:"11.0.8434.0", kb:"3118297", bulletin:bulletin, min_version:"11.0.0.0", product:"Microsoft Word Viewer") == HCF_OLDER)
        vuln = TRUE;
    }
  }

  ######################################################################
  # PowerPoint Checks
  ######################################################################
  powerpoint_checks = make_array(
    "15.0", make_array("sp", 1, "version", "15.0.4859.1000", "kb", "3115487")
  );
  if (hotfix_check_office_product(product:"PowerPoint", checks:powerpoint_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # PowerPoint Viewer 2010
  ######################################################################
  ppt_vwr_checks = make_array(
    "14.0", make_array("sp", 2, "version", "14.0.7173.5000", "kb", "3054969")
  );
  if (hotfix_check_office_product(product:"PowerPointViewer", display_name:"PowerPoint Viewer", checks:ppt_vwr_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Excel Compatibility pack
  ######################################################################
  excel_compat_checks = make_array(
    "12.0", make_array("version", "12.0.6755.5000", "kb", "3115462")
  );
  if (hotfix_check_office_product(product:"ExcelCnv", display_name:"Office Compatibility Pack SP3", checks:excel_compat_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # PowerPoint Compatibility pack
  ######################################################################
  installs = get_kb_list("SMB/Office/PowerPointCnv/*/ProductPath");
  if (!isnull(installs))
  foreach install (keys(installs))
  {
    path = installs[install];
    path = ereg_replace(pattern:'^(.+)\\\\[^\\\\]+\\.exe$', replace:"\1\", string:path, icase:TRUE);
    if(hotfix_check_fversion(path:path, file:"ppcnv.dll", version:"12.0.6755.5000", kb:"2597974", bulletin:bulletin, min_version:"12.0.0.0", product:"PowerPoint Compatability Pack SP3") == HCF_OLDER)
      vuln = TRUE;
  }
}

perform_office_checks();
perform_office_product_checks();
perform_office_online_server_checks();
perform_owa_checks();
perform_sharepoint_checks();

if (vuln)
{
  set_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');
}

References