Vulnerabilities > CVE-2016-3234 - Information Exposure vulnerability in Microsoft products

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
microsoft
CWE-200
nessus
NVD
Published: 2016-06-16
Updated: 2018-10-12

Summary

Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Office Compatibility Pack SP3, Word Viewer, Word Automation Services on SharePoint Server 2010 SP2, Word Automation Services on SharePoint Server 2013 SP1, Office Web Apps 2010 SP2, and Office Web Apps Server 2013 SP1 allow remote attackers to obtain sensitive information from process memory via a crafted Office document, aka "Microsoft Office Information Disclosure Vulnerability."

Vulnerable Configurations

Part Description Count
Application
Microsoft
10

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Msbulletin

bulletin_idMS16-070
bulletin_url
date2016-06-14T00:00:00
impactRemote Code Execution
knowledgebase_id3163610
knowledgebase_url
severityCritical
titleSecurity Update for Microsoft Office

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS16-070.NASL
descriptionThe remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities in Microsoft Office : - Multiple remote code execution vulnerabilities exist due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these by convincing a user to open a specially crafted file or visit a website that hosts such a file, resulting in the execution of arbitrary code in the context of the user. (CVE-2016-0025, CVE-2016-3233) - A flaw exists due to improper disclosure of memory contents. An unauthenticated, remote attacker can exploit this by convincing a user to open a specially crafted file, resulting in the disclosure of potentially sensitive information. (CVE-2016-3234) - A flaw exists due to improper validation of input before loading OLE library files. A local attacker can exploit this, via a specially crafted application, to execute arbitrary code. (CVE-2016-3235)
last seen2020-06-01
modified2020-06-02
plugin id91611
published2016-06-15
reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/91611
titleMS16-070: Security Update for Microsoft Office (3163610)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(91611);
  script_version("1.13");
  script_cvs_date("Date: 2019/11/19");

  script_cve_id(
    "CVE-2016-0025",
    "CVE-2016-3233",
    "CVE-2016-3234",
    "CVE-2016-3235"
  );
  script_bugtraq_id(
    91089,
    91091,
    91095,
    91096
  );
  script_xref(name:"MSFT", value:"MS16-070");
  script_xref(name:"MSKB", value:"2596915");
  script_xref(name:"MSKB", value:"2999465");
  script_xref(name:"MSKB", value:"3114740");
  script_xref(name:"MSKB", value:"3114872");
  script_xref(name:"MSKB", value:"3115014");
  script_xref(name:"MSKB", value:"3115020");
  script_xref(name:"MSKB", value:"3115041");
  script_xref(name:"MSKB", value:"3115107");
  script_xref(name:"MSKB", value:"3115111");
  script_xref(name:"MSKB", value:"3115130");
  script_xref(name:"MSKB", value:"3115134");
  script_xref(name:"MSKB", value:"3115144");
  script_xref(name:"MSKB", value:"3115170");
  script_xref(name:"MSKB", value:"3115173");
  script_xref(name:"MSKB", value:"3115182");
  script_xref(name:"MSKB", value:"3115187");
  script_xref(name:"MSKB", value:"3115194");
  script_xref(name:"MSKB", value:"3115195");
  script_xref(name:"MSKB", value:"3115196");
  script_xref(name:"MSKB", value:"3115198");
  script_xref(name:"MSKB", value:"3115243");
  script_xref(name:"MSKB", value:"3115244");
  script_xref(name:"IAVA", value:"2016-A-0148");

  script_name(english:"MS16-070: Security Update for Microsoft Office (3163610)");
  script_summary(english:"Checks the file versions.");

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

  - Multiple remote code execution vulnerabilities exist due
    to improper handling of objects in memory.  An
    unauthenticated, remote attacker can exploit these by
    convincing a user to open a specially crafted file or
    visit a website that hosts such a file, resulting in the
    execution of arbitrary code in the context of the user.
    (CVE-2016-0025, CVE-2016-3233)

  - A flaw exists due to improper disclosure of memory
    contents. An unauthenticated, remote attacker can
    exploit this by convincing a user to open a specially
    crafted file, resulting in the disclosure of potentially
    sensitive information. (CVE-2016-3234)

  - A flaw exists due to improper validation of input
    before loading OLE library files. A local attacker can
    exploit this, via a specially crafted application, to
    execute arbitrary code. (CVE-2016-3235)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-070");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Microsoft Office 2007,
2010, 2013, 2013 RT, and 2016; Microsoft Word 2007, 2010, 2013, 2013
RT, and 2016; Microsoft Excel 2007 and 2010; Microsoft Visio 2007,
2010, 2013, and 2016; Visio Viewer 2007 and 2010; Word Viewer;
Microsoft Office Compatibility Pack; Office Web Apps 2010 and 2013;
Microsoft SharePoint Server 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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-3235");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Office OLE Multiple DLL Side Loading Vulnerabilities');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/06/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/06/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/15");

  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:excel");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:visio");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:visio_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_compatibility_pack");
  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:"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) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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 = 'MS16-070';
kbs = make_list(
  '2596915', # Visio 2007 SP3 Viewer
  '2999465', # Visio 2010 Viewer
  '3114740', # Visio 2007 SP3 
  '3114872', # Visio 2010 SP2
  '3115014', # Word Automation Services on SharePoint Server 2013
  '3115020', # Visio 2013 SP1
  '3115041', # Visio 2016 
  '3115107', # Excel 2007 SP3
  '3115111', # Office Compatibility Pack SP3
  '3115130', # Excel 2007 SP2
  '3115134', # Office Online Server
  '3115144', # Office 2016
  '3115170', # Office Web Apps 2013
  '3115173', # Word 2013 SP1
  '3115182', # Word 2016
  '3115187', # Word Viewer
  '3115194', # Microsoft Office Compatibility SP3
  '3115195', # Word 2007 SP3
  '3115196', # Word Automation Services on SharePoint Server 2010
  '3115198', # Office 2010 SP2
  '3115243', # Word 2010 SP2
  '3115244'  # Office Web Apps 2010
);

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:"16.0.7102.2226", min_version:"16.0.6000.0", path:path, bulletin:bulletin, kb:"3115134", product:"Office Online Server") == HCF_OLDER)
      vuln = TRUE;
  }
}

######################################################################
# Visio Checks
######################################################################
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;

  # Visio checks
  foreach install (keys(installs))
  {
    version = install - 'SMB/Office/Visio/' - '/VisioPath';
    if ("12.0" >!< version && "14.0" >!< version && "15.0" >!< version && "16.0" >!< version)
      continue;
    path = installs[install];
    # Visio Viewer
    if ("12.0" >< version && hotfix_is_vulnerable(path:path, file:"vviewdwg.dll", version:"12.0.6749.5000", min_version:"12.0.6600.0", bulletin:bulletin, kb:"2596915"))
      vuln = TRUE;
    if ("14.0" >< version && hotfix_is_vulnerable(path:path, file:"vviewdwg.dll", version:"14.0.7170.5000", min_version:"14.0.6500.0", bulletin:bulletin, kb:"2999465"))
      vuln = TRUE;

    # Main Visio Executable Checks
    if ("12.0" >< version && hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"12.0.6749.5000", min_version:"12.0.6600.0", bulletin:bulletin, kb:"3114740"))
      vuln = TRUE;
    if ("14.0" >< version && hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"14.0.7170.5000", min_version:"14.0.6500.0", bulletin:bulletin, kb:"3114872"))
      vuln = TRUE;
    if ("15.0" >< version && hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"15.0.4831.1000", min_version:"15.0.4000.0", bulletin:bulletin, kb:"3115020"))
      vuln = TRUE;
    if ("16.0" >< version && 
      (
        hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"16.0.4390.1000", channel:"MSI", channel_product:"Visio", bulletin:bulletin, kb:"3115041") ||
        # deferred 1
        hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"16.0.6001.1082", channel:"Deferred", channel_product:"Visio", bulletin:bulletin, kb:"3115041") ||
        # deferred 2
        hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"16.0.6741.2048", channel:"Deferred", channel_version:"1602", channel_product:"Visio", bulletin:bulletin, kb:"3115041") ||
        # first release for deferred
        hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"16.0.6965.2058", channel:"First Release for Deferred", channel_product:"Visio", bulletin:bulletin, kb:"3115041") ||
        # current
        hotfix_is_vulnerable(path:path, file:"Visio.exe", version:"16.0.6965.2058", channel:"Current", channel_product:"Visio", bulletin:bulletin, kb:"3115041") 
      )
    ) 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:"sword.dll", version:"14.0.7170.5000", min_version:"14.0.7015.1000", path:path, bulletin:bulletin, kb:"3115244", 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:"ExcelServicesEcs\bin");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"15.0.4833.1000", min_version:"15.0.4571.1500", path:path, bulletin:bulletin, kb:"3115170", product:"Office Web Apps 2013") == HCF_OLDER)
      vuln = TRUE;
  }
}

function perform_office_checks()
{
  local_var office_vers, office_sp, path, excel_checks;
  office_vers = hotfix_check_office_version();

  # 2010
  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:"wwlibcxm.dll", version: "14.0.7170.5000", path:path, bulletin:bulletin, kb:"3115198", product:"Microsoft Office 2010 SP2") == HCF_OLDER
      ) vuln = TRUE;
    }
  }

  # 2016
  if (office_vers['16.0'])
  {
    path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"16.0"), value:"Microsoft Office\root\Office16");
    office_sp = get_kb_item("SMB/Office/2016/SP");
    if (!isnull(office_sp) && office_sp == 0)
    {
      if (
        hotfix_check_fversion(file:"mso.dll", version:"16.0.4390.1000", path:path, bulletin:bulletin, kb:"3115144", product:"Microsoft Office 2016") == HCF_OLDER
      ) vuln = TRUE;
    }
  }

  ######################################################################
  # Excel Checks
  ######################################################################
  excel_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6749.5000", "kb", "3115107"),
    "14.0", make_array("sp", 2, "version", "14.0.7170.5000", "kb", "3115130")
  );
  if (hotfix_check_office_product(product:"Excel", checks:excel_checks, bulletin:bulletin))
    vuln = TRUE;
}

function perform_office_product_checks()
{
  local_var checks, word_vwr_checks, vwr_checks, compat_checks, kb;

  local_var installs, install, path; # For DLL checks

  ######################################################################
  # Word Checks
  ######################################################################
  checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6749.5000", "kb", "3115195"),
    "14.0", make_array("sp", 2, "version", "14.0.7170.5000", "kb", "3115243"),
    "15.0", make_array("sp", 1, "version", "15.0.4833.1000", "kb", "3115173"),
    "16.0", make_nested_list(
      make_array("sp", 0, "version", "16.0.4393.1000", "channel", "MSI", "kb", "3115182"),
      make_array("sp", 0, "version", "16.0.6001.1082", "channel", "Deferred", "kb", "3115182"),
      make_array("sp", 0, "version", "16.0.6741.2048", "channel", "Deferred", "channel_version", "1602", "kb", "3115182"),
      make_array("sp", 0, "version", "16.0.6965.2058", "channel", "First Release for Deferred", "kb", "3115182"),
      make_array("sp", 0, "version", "16.0.6965.2058", "channel", "Current", "kb", "3115182")
    )
  );
  if (hotfix_check_office_product(product:"Word", checks: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", "11.0.8429.0", "kb", "3115187")
    );
    if (hotfix_check_office_product(product:"WordViewer", display_name:"Word Viewer", checks:word_vwr_checks, bulletin:bulletin))
      vuln = TRUE;
  }

  ######################################################################
  # Word Compatibility pack
  ######################################################################
  installs = get_kb_list("SMB/Office/WordCnv/*/ProductPath");
  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:"wordcnv.dll",  version:"12.0.6749.5000", kb:"3115194", bulletin:bulletin, min_version:"12.0.0.0", product:"Microsoft Office Compatibility Pack") == HCF_OLDER)
      vuln = TRUE;
  }

  ######################################################################
  # Excel Compatibility pack
  ######################################################################
  compat_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6749.5000", "kb", "3115111")
  );
  if (hotfix_check_office_product(product:"ExcelCnv", display_name:"Office Compatibility Pack SP3", checks:compat_checks, bulletin:bulletin))
    vuln = TRUE;
}

######################################################################
# SharePoint
######################################################################
function perform_sharepoint_checks()
{
  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, prod;

  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'];
    }
  }

  # Office Services and Web Apps
  ######################################################################
  # 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:"sword.dll", version:"14.0.7170.5000", path:path, bulletin:bulletin, kb:"3115196", product:"Office SharePoint Server 2010 Word Automation Services") == HCF_OLDER)
      vuln = TRUE;
  }

  if (sps_2013_path)
  {
    if (sps_2013_sp == "1")
    {
      if(sps_2013_edition == "Server")
      {
        path = hotfix_append_path(path:sps_2013_path, value:"WebServices\ConversionServices");
        if (hotfix_check_fversion(file:"sword.dll", version:"15.0.4833.1000", min_version:"15.0.0.0", path:path, bulletin:bulletin, kb:"3115014", product:"Office SharePoint Server 2013 Word Automation Services") == HCF_OLDER)
          vuln = TRUE;
      }
    }
  }
}

perform_office_online_server_checks();
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