Vulnerabilities > CVE-2015-2466 - Improper Input Validation vulnerability in Microsoft Office 2007/2010/2013

047910
CVSS 9.3 - CRITICAL
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
microsoft
CWE-20
critical
nessus
NVD
Published: 2015-08-15
Updated: 2018-10-30

Summary

Microsoft Office 2007 SP3, 2010 SP2, 2013 SP1, and 2013 RT SP1 allows remote attackers to execute arbitrary code via a crafted template, aka "Microsoft Office Remote Code Execution Vulnerability."

Vulnerable Configurations

Part Description Count
Application
Microsoft
3

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.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Msbulletin

bulletin_idMS15-081
bulletin_url
date2015-08-11T00:00:00
impactRemote Code Execution
knowledgebase_id3080790
knowledgebase_url
severityCritical
titleVulnerabilities in Microsoft Office Could Allow Remote Code Execution

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS15-081.NASL
descriptionThe remote Windows host has a version of Microsoft Office, Word, Word Viewer, Excel, PowerPoint, Visio, SharePoint Server, Microsoft Office Compatibility Pack, Microsoft Word Web Apps, or Microsoft Office Web Apps installed that is affected by multiple remote code execution vulnerabilities : - Multiple remote code execution vulnerabilities exist due to improper handling of objects in memory. A remote attacker can exploit these vulnerabilities by convincing a user to open a specially crafted Office file, resulting in the execution of arbitrary code in the context of the current user. (CVE-2015-1642, CVE-2015-2467, CVE-2015-2468, CVE-2015-2469, CVE-2015-2477) - An information disclosure vulnerability exists when files at a medium integrity level become accessible to Internet Explorer running in Enhanced Protection Mode (EPM). An attacker can exploit this vulnerability by leveraging another vulnerability to execute code in IE with EPM, and then executing Excel, Notepad, PowerPoint, Visio, or Word using an unsafe command line parameter. (CVE-2015-2423) - A remote code execution vulnerability exists due a failure to properly validate templates. A remote attacker can exploit this vulnerability by convincing a user to open a specially crafted template file, resulting in the execution of arbitrary code in the context of the current user. (CVE-2015-2466) - A remote code execution vulnerability exists when Office decreases an integer value beyond its intended minimum value. A remote attacker can exploit this vulnerability by convincing a user to open a specially crafted Office file, resulting in the execution of arbitrary code in the context of the current user. (CVE-2015-2470)
last seen2020-06-01
modified2020-06-02
plugin id85350
published2015-08-12
reporterThis script is Copyright (C) 2015-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/85350
titleMS15-081: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3080790)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(85350);
  script_version("1.16");
  script_cvs_date("Date: 2018/08/03 11:35:09");

  script_cve_id(
    "CVE-2015-1642",
    "CVE-2015-2423",
    "CVE-2015-2466",
    "CVE-2015-2467",
    "CVE-2015-2468",
    "CVE-2015-2469",
    "CVE-2015-2470",
    "CVE-2015-2477"
  );
  script_bugtraq_id(
    76200,
    76202,
    76204,
    76206,
    76212,
    76214,
    76217,
    76219
  );
  script_xref(name:"MSFT", value:"MS15-081");
  script_xref(name:"MSKB", value:"2553313");
  script_xref(name:"MSKB", value:"2596650");
  script_xref(name:"MSKB", value:"2598244");
  script_xref(name:"MSKB", value:"2687409");
  script_xref(name:"MSKB", value:"2837610");
  script_xref(name:"MSKB", value:"2920691");
  script_xref(name:"MSKB", value:"2920708");
  script_xref(name:"MSKB", value:"2965280");
  script_xref(name:"MSKB", value:"2965310");
  script_xref(name:"MSKB", value:"2986254");
  script_xref(name:"MSKB", value:"3039734");
  script_xref(name:"MSKB", value:"3039798");
  script_xref(name:"MSKB", value:"3054816");
  script_xref(name:"MSKB", value:"3054858");
  script_xref(name:"MSKB", value:"3054876");
  script_xref(name:"MSKB", value:"3054888");
  script_xref(name:"MSKB", value:"3054929");
  script_xref(name:"MSKB", value:"3054960");
  script_xref(name:"MSKB", value:"3054974");
  script_xref(name:"MSKB", value:"3054991");
  script_xref(name:"MSKB", value:"3054992");
  script_xref(name:"MSKB", value:"3055003");
  script_xref(name:"MSKB", value:"3055029");
  script_xref(name:"MSKB", value:"3055030");
  script_xref(name:"MSKB", value:"3055033");
  script_xref(name:"MSKB", value:"3055037");
  script_xref(name:"MSKB", value:"3055039");
  script_xref(name:"MSKB", value:"3055044");
  script_xref(name:"MSKB", value:"3055051");
  script_xref(name:"MSKB", value:"3055052");
  script_xref(name:"MSKB", value:"3055053");
  script_xref(name:"MSKB", value:"3055054");
  script_xref(name:"MSKB", value:"3085538");
  script_xref(name:"IAVA", value:"2015-A-0194");

  script_name(english:"MS15-081: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3080790)");
  script_summary(english:"Checks the Office, SharePoint, and OWA versions.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple remote code execution
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host has a version of Microsoft Office, Word, Word
Viewer, Excel, PowerPoint, Visio, SharePoint Server, Microsoft Office
Compatibility Pack, Microsoft Word Web Apps, or Microsoft Office Web
Apps installed that is affected by multiple remote code execution
vulnerabilities :

  - Multiple remote code execution vulnerabilities exist due
    to improper handling of objects in memory. A remote
    attacker can exploit these vulnerabilities by convincing
    a user to open a specially crafted Office file,
    resulting in the execution of arbitrary code in the
    context of the current user. (CVE-2015-1642,
    CVE-2015-2467, CVE-2015-2468, CVE-2015-2469,
    CVE-2015-2477)

  - An information disclosure vulnerability exists when
    files at a medium integrity level become accessible to
    Internet Explorer running in Enhanced Protection Mode
    (EPM). An attacker can exploit this vulnerability by
    leveraging another vulnerability to execute code in IE
    with EPM, and then executing Excel, Notepad, PowerPoint,
    Visio, or Word using an unsafe command line parameter.
    (CVE-2015-2423)

  - A remote code execution vulnerability exists due a
    failure to properly validate templates. A remote
    attacker can exploit this vulnerability by convincing a
    user to open a specially crafted template file,
    resulting in the execution of arbitrary code in the
    context of the current user. (CVE-2015-2466)

  - A remote code execution vulnerability exists when Office
    decreases an integer value beyond its intended minimum
    value. A remote attacker can exploit this vulnerability
    by convincing a user to open a specially crafted Office
    file, resulting in the execution of arbitrary code in
    the context of the current user. (CVE-2015-2470)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/ms15-081");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Office 2007, 2010, 2013,
2013 RT, 2016, SharePoint Server 2010, SharePoint Server 2013,
Microsoft Office Compatibility Pack, Microsoft Word Web Apps 2010, and
Microsoft Office Web Apps 2013.");
  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:H/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/08/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/08/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/08/12");

  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:word");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:visio");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_server");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_web_apps");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_compatibility_pack");
  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) 2015-2018 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 = 'MS15-081';
kbs = make_list(
  2553313, # Office 2010 SP2 #
  2596650, # Office 2007 SP3 #
  2598244, # Office 2010 SP2 #
  2687409, # Office 2007 SP3 #
  2837610, # Office 2007 SP3 #
  2920691, # Word 2016
  2920708, # Visio 2016
  2965280, # Visio 2007 SP3 #
  2965310, # Office 2010 SP2 SP2 #
  2986254, # Office Compatibility Pack
  3039734, # 2013 SP1 / 2013 RT #
  3039798, # 2013 SP1 / 2013 RT #
  3054816, # 2013 SP1 / 2013 RT #
  3054858, # SharePoint 2013 Word Automation Services SP1 #
  3054876, # Visio 2010 SP2 #
  3054888, # Office 2007 SP3 #
  3054929, # Visio 2013 SP1
  3054960, # SharePoint 2010 Word Automation Services SP2 #
  3054974, # Word Web Apps 2010 SP2 #
  3054991, # Excel 2013 SP1 #
  3054992, # Excel 2007 SP3 #
  3055003, # Word Web Apps 2013 SP1 #
  3055029, # PowerPoint 2013 SP1 #
  3055030, # Word 2013 SP1 #
  3055033, # PowerPoint 2010 SP2 #
  3055037, # Office 2010 SP2 #
  3055039, # Word 2010 SP2 #
  3055044, # Excel 2010 SP2 #
  3055051, # Power Point 2007 SP3 #
  3055052, # Word 2007 SP3 #
  3055053, # Word Viewer
  3055054, # Word Viewer
  3085538  # Office 2016
);

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();

######################################################################
# SharePoint
######################################################################
function perform_sharepoint_checks()
{
  local_var sps_2010_path, sps_2013_path, sps_2010_sp, sps_2013_sp, sps_2010_edition, sps_2013_edition;
  local_var installs, install, sp, path;

  # Get installs of SharePoint
  sps_2010_path = NULL;
  sps_2013_path = NULL;
  sp = NULL;

  installs = get_installs(app_name:"Microsoft SharePoint Server");
  foreach install (installs[1])
  {
    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'];
    }
  }

  ######################################################################
  # SharePoint Server 2010 SP2 - Word Automation Service
  # KB: 3054960  File: sword.dll Fix Ver: 14.0.7155.5000
  ######################################################################
  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:"sword.dll", version:"14.0.7155.5000", path:path, bulletin:bulletin, kb:"3054960", product:"Office SharePoint Server 2010 Word Automation Services") == HCF_OLDER)
      vuln = TRUE;
  }

  ######################################################################
  # SharePoint Server 2013 SP1 - Word Automation Services
  # KB: 3054858 File: sword.dll Fix Ver: 15.0.4745.1000
  ######################################################################
  if (sps_2013_path && sps_2013_sp == "1" && sps_2013_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2013_path, value:"WebServices\ConversionServices");
    if (hotfix_check_fversion(file:"sword.dll", version:"15.0.4745.1000", path:path, bulletin:bulletin, kb:"3054858", product:"Office SharePoint Server 2013 Word Automation Services") == HCF_OLDER)
      vuln = TRUE;

  }
}

######################################################################
# Office Web Apps
######################################################################
function perform_owa_checks()
{
  local_var owa_installs, owa_install, owa_2010_path, owa_2010_sp, 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
  # KB: 3054974 File: sword.dll Fix Ver: 14.0.7155.5000
  ######################################################################
  if (owa_2010_path && owa_2013_sp == "2")
  {
    path = hotfix_append_path(path:owa_2010_path, value:"WordConversionService\Bin\Converter");
    if (hotfix_check_fversion(file:"sword.dll", version:"14.0.7155.5000", min_version:"14.0.7015.1000", path:path, bulletin:bulletin, kb:"3054974", product:"Office Web Apps 2010") == HCF_OLDER)
      vuln = TRUE;
  }

  ######################################################################
  # Office Web Apps 2013 SP1
  # KB: 3055003 File: sword.dll Fix Ver: 15.0.4745.1000
  ######################################################################
  if (owa_2013_path && owa_2013_sp == "1")
  {
    path = hotfix_append_path(path:owa_2013_path, value:"WordConversionService\Bin\Converter");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"15.0.4745.1000", min_version:"15.0.4571.1500", path:path, bulletin:bulletin, kb:"3055003", product:"Office Web Apps 2013") == HCF_OLDER)
      vuln = TRUE;
  }
}

# Generic Office Checks
function perform_office_checks()
{
  local_var office_vers, office_sp, path;
  office_vers = hotfix_check_office_version();
  if (office_vers["12.0"])
  {
    office_sp = get_kb_item("SMB/Office/2007/SP");
    if (!isnull(office_sp) && office_sp == 3)
    {
      path = hotfix_append_path(path:hotfix_get_officecommonfilesdir(officever:"12.0"), value:"Microsoft Shared\Office12");
      if (
        hotfix_check_fversion(file:"vbe6.dll",      version: "6.5.10.55"      , path:path, bulletin:bulletin, kb:"2687409", product:"Microsoft Office 2007 SP3") == HCF_OLDER ||
        hotfix_check_fversion(file:"ieawsdc.dll",   version: "12.0.6035.0"    , path:path, bulletin:bulletin, kb:"2596650", product:"Microsoft Office 2007 SP3") == HCF_OLDER ||
        hotfix_check_fversion(file:"mso.dll",       version: "12.0.6728.5000" , path:path, bulletin:bulletin, kb:"3054888", product:"Microsoft Office 2007 SP3") == HCF_OLDER ||
        hotfix_check_fversion(file:"msptls.dll",    version: "12.0.6727.5000" , path:path, bulletin:bulletin, kb:"2837610", product:"Microsoft Office 2007 SP3") == HCF_OLDER ||
        # This can't go in the generic checks because we must check ppcore.dll
        hotfix_check_fversion(file:"ppcore.dll",    version: "12.0.6727.5000" , path:path, bulletin:bulletin, kb:"3055051", product:"PowerPoint 2007 SP3"      ) == HCF_OLDER
      )
        vuln = TRUE;
    }

  }

  if (office_vers["14.0"])
  {
    office_sp = get_kb_item("SMB/Office/2010/SP");
    if (!isnull(office_sp) && office_sp == 2)
    {
      path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"14.0"), value:"Microsoft Office\Office14");
      if (
        hotfix_check_fversion(file:"vbe7.dll",     version: "7.00.1637"     , path:path, bulletin:bulletin, kb:"2965310", product:"Microsoft Office 2010 SP2") == HCF_OLDER ||
        hotfix_check_fversion(file:"ieawsdc.dll",  version: "14.0.6101.0"   , path:path, bulletin:bulletin, kb:"2553313", product:"Microsoft Office 2010 SP2") == HCF_OLDER ||
        hotfix_check_fversion(file:"msptls.dll",   version: "14.0.7155.5000", path:path, bulletin:bulletin, kb:"2598244", product:"Microsoft Office 2010 SP2") == HCF_OLDER ||
        hotfix_check_fversion(file:"wwlibcxm.dll", version: "14.0.7155.5001", path:path, bulletin:bulletin, kb:"3055037", product:"Microsoft Office 2010 SP2") == HCF_OLDER
      )
        vuln = TRUE;
    }
  }
  if (office_vers["15.0"])
  {
    office_sp = get_kb_item("SMB/Office/2013/SP");
    if (!isnull(office_sp) && int(office_sp) == 1)
    {
      path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"15.0"), value:"Microsoft Office\Office15");
      if (
        hotfix_check_fversion(file:"vbe7.dll",      version: "7.01.1049"      , path:path, bulletin:bulletin, kb:"3039734", product:"Microsoft Office 2013 SP1") == HCF_OLDER ||
        hotfix_check_fversion(file:"ieawsdc.dll",   version: "15.0.4421.0"    , path:path, bulletin:bulletin, kb:"3039798", product:"Microsoft Office 2013 SP1") == HCF_OLDER ||
        hotfix_check_fversion(file:"msptls.dll",    version: "15.0.4745.1000" , path:path, bulletin:bulletin, kb:"3054816", product:"Microsoft Office 2013 SP1") == HCF_OLDER
      )
        vuln = TRUE;
    }
  }
  if (office_vers["16.0"])
  {
    office_sp = get_kb_item("SMB/Office/2016/SP");
    if (!isnull(office_sp) && int(office_sp) == 0)
    {
      path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"16.0"), value:"Microsoft Office\root\Office16");
      if (
        hotfix_check_fversion(file:"ieawsdc.dll", version:"15.0.4421.0", channel:"MSI", path:path, bulletin:bulletin, kb:"3085538", product:"Microsoft Office 2016") == HCF_OLDER
      )
        vuln = TRUE;
    }
  }
}

function perform_office_product_checks()
{
  local_var excel_checks, word_checks, ppt_checks, word_vwr_checks;

  local_var installs, install, path; # For DLL checks

  ######################################################################
  # Excel Checks
  ######################################################################
  excel_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6727.5000", "kb", "3054992"),
    "14.0", make_array("sp", 2, "version", "14.0.7155.5000", "kb", "3055044"),
    "15.0", make_array("sp", 1, "version", "15.0.4745.1000", "kb", "3054991")
  );
  if (hotfix_check_office_product(product:"Excel", checks:excel_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # PowerPoint
  ######################################################################
  ppt_checks = make_array(
    "14.0", make_array("sp", 2, "version", "14.0.7155.5000", "kb", "3055033"),
    "15.0", make_array("sp", 1, "version", "15.0.4745.1000", "kb", "3055029")
  );
  if (hotfix_check_office_product(product:"PowerPoint", checks:ppt_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Word
  ######################################################################
  word_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6727.5000", "kb", "3055052"),
    "14.0", make_array("sp", 2, "version", "14.0.7155.5001", "kb", "3055039"),
    "15.0", make_array("sp", 1, "version", "15.0.4745.1001", "kb", "3055030"),
    "16.0", make_array("sp", 0, "version", "16.0.4288.1000", "channel", "MSI", "kb", "2920691")
  );
  if (hotfix_check_office_product(product:"Word", checks:word_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Word Viewer
  ######################################################################
  installs = get_kb_list("SMB/Office/WordViewer/*/ProductPath");
  if(!isnull(installs))
  {
    word_vwr_checks = make_array(
      "11.0", make_array("version", "11.0.8420.0", "kb", "3055053")
    );
    if (hotfix_check_office_product(product:"WordViewer", display_name:"Word Viewer", checks:word_vwr_checks, bulletin:bulletin))
      vuln = TRUE;

    foreach install (keys(installs))
    {
      path = installs[install];
      if(hotfix_check_fversion(file:"mso.dll", version: "11.0.8420.0", min_version:"11.0.0.0", path:path, bulletin:bulletin, kb:"3055054", product:"Microsoft Word Viewer") == HCF_OLDER)
        vuln = TRUE;
    }
  }

  ######################################################################
  # Word Compatibility pack
  ######################################################################
  installs = get_kb_list("SMB/Office/WordCnv/*/ProductPath");
  foreach install (keys(installs))
  {
    path = installs[install];
    if(hotfix_check_fversion(path:path, file:"wordcnv.dll", version:"12.0.6727.5000", kb: "2986254", bulletin:bulletin, min_version:"12.0.0.0", product:"Microsoft Office Compatibility Pack") == HCF_OLDER)
      vuln = TRUE;
  }
}

function perform_visio_checks()
{
  local_var installs,install,share,path,version;

  # Preconditions
  installs = get_kb_list("SMB/Office/Visio/*/VisioPath");
  if(isnull(installs))
    return;

  share = hotfix_path2share(path:path);
  if(!is_accessible_share(share:share))
    return;

  # Exe checks
  foreach install (keys(installs))
  {
    version = install - 'SMB/Office/Visio/' - '/VisioPath';
    if ("16.0" >!< version && "15.0" >!< version && "14.0" >!< version && "12.0" >!< version)
      continue;
    path = installs[install];
    if ("16.0" >< version && hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"16.0.4288.1000", channel:"MSI", channel_product:"Visio", bulletin:bulletin, kb:"2920708"))
      vuln = TRUE;
    if ("15.0" >< version && hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"15.0.4745.1000", min_version:"15.0.4000.0", bulletin:bulletin, kb:"3054929"))
      vuln = TRUE;
    if ("14.0" >< version && hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"14.0.7155.5000", min_version:"14.0.6500.0", bulletin:bulletin, kb:"3054876"))
      vuln = TRUE;
    if ("12.0" >< version && hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"12.0.6727.5000", min_version:"12.0.6000.0", bulletin:bulletin, kb:"2965280"))
      vuln = TRUE;
  }
}

perform_office_checks();
perform_office_product_checks();
perform_sharepoint_checks();
perform_owa_checks();
perform_visio_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