Vulnerabilities > CVE-2016-3270 - Permissions, Privileges, and Access Controls vulnerability in Microsoft products

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-264
nessus
NVD
Published: 2016-10-14
Updated: 2018-10-12

Summary

The Graphics component in the kernel in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607 allows local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

Vulnerable Configurations

Part Description Count
OS
Microsoft
11

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.

Msbulletin

bulletin_idMS16-120
bulletin_url
date2016-10-11T00:00:00
impactRemote Code Execution
knowledgebase_id3192884
knowledgebase_url
severityCritical
titleSecurity Update for Microsoft Graphics Component

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS16-120.NASL
descriptionThe remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - Multiple information disclosure vulnerabilities exist in the Windows GDI component due to improper handling of objects in memory. A local attacker can exploit these vulnerabilities, via a specially crafted application, to predict memory offsets in a call stack and bypass the Address Space Layout Randomization (ASLR) feature, resulting in the disclosure of memory contents. (CVE-2016-3209, CVE-2016-3262, CVE-2016-3263) - An elevation of privilege vulnerability exists in the Windows kernel due to improper handling of objects in memory. A local attacker can exploit this to elevate privileges and execute code in kernel mode. (CVE-2016-3270) - A remote code execution vulnerability exists in the Windows GDI component due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this vulnerability by convincing a user to visit a specially crafted website or open a specially crafted file, resulting in the execution of arbitrary code in the context of the current user. (CVE-2016-3393) - A remote code execution vulnerability exists in the Windows font library due to improper handling of embedded fonts. An unauthenticated, remote attacker can exploit this vulnerability by convincing a user to visit a specially crafted website or open a specially crafted document file, resulting in the execution of arbitrary code in the context of the current user. (CVE-2016-3396) - An elevation of privilege vulnerability exists in the Windows GDI component due to improper handling of objects in memory. A local attacker can exploit this to elevate privileges and execute code in kernel mode. (CVE-2016-7182)
last seen2020-06-01
modified2020-06-02
plugin id94017
published2016-10-12
reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/94017
titleMS16-120: Security Update for Microsoft Graphics Component (3192884)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(94017);
  script_version("1.9");
  script_cvs_date("Date: 2019/11/14");

  script_cve_id(
    "CVE-2016-3209",
    "CVE-2016-3262",
    "CVE-2016-3263",
    "CVE-2016-3270",
    "CVE-2016-3393",
    "CVE-2016-3396",
    "CVE-2016-7182"
  );
  script_bugtraq_id(
    93377,
    93380,
    93385,
    93390,
    93394,
    93395,
    93403
  );
  script_xref(name:"MSFT", value:"MS16-120");
  script_xref(name:"MSKB", value:"3191203");
  script_xref(name:"MSKB", value:"3192391");
  script_xref(name:"MSKB", value:"3185330");
  script_xref(name:"MSKB", value:"3192392");
  script_xref(name:"MSKB", value:"3185331");
  script_xref(name:"MSKB", value:"3192393");
  script_xref(name:"MSKB", value:"3185332");
  script_xref(name:"MSKB", value:"3192440");
  script_xref(name:"MSKB", value:"3192441");
  script_xref(name:"MSKB", value:"3194798");
  script_xref(name:"MSKB", value:"3188726");
  script_xref(name:"MSKB", value:"3189039");
  script_xref(name:"MSKB", value:"3189040");
  script_xref(name:"MSKB", value:"3188730");
  script_xref(name:"MSKB", value:"3188732");
  script_xref(name:"MSKB", value:"3188731");
  script_xref(name:"MSKB", value:"3188735");
  script_xref(name:"MSKB", value:"3189051");
  script_xref(name:"MSKB", value:"3189052");
  script_xref(name:"MSKB", value:"3188740");
  script_xref(name:"MSKB", value:"3188743");
  script_xref(name:"MSKB", value:"3188741");
  script_xref(name:"MSKB", value:"3118301");
  script_xref(name:"MSKB", value:"3118317");
  script_xref(name:"MSKB", value:"3118394");
  script_xref(name:"MSKB", value:"3118327");
  script_xref(name:"MSKB", value:"3118348");
  script_xref(name:"MSKB", value:"3188397");
  script_xref(name:"MSKB", value:"3188399");
  script_xref(name:"MSKB", value:"3188400");
  script_xref(name:"MSKB", value:"3189647");
  script_xref(name:"MSKB", value:"3193713");
  script_xref(name:"IAVA", value:"2016-A-0278");

  script_name(english:"MS16-120: Security Update for Microsoft Graphics Component (3192884)");
  script_summary(english:"Checks the version of win32k.sys.");

  script_set_attribute(attribute:"synopsis", value:
"The remote 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 :

  - Multiple information disclosure vulnerabilities exist in
    the Windows GDI component due to improper handling of
    objects in memory. A local attacker can exploit these
    vulnerabilities, via a specially crafted application, to
    predict memory offsets in a call stack and bypass the
    Address Space Layout Randomization (ASLR) feature,
    resulting in the disclosure of memory contents.
    (CVE-2016-3209, CVE-2016-3262, CVE-2016-3263)

  - An elevation of privilege vulnerability exists in the
    Windows kernel due to improper handling of objects in
    memory. A local attacker can exploit this to elevate
    privileges and execute code in kernel mode.
    (CVE-2016-3270)

  - A remote code execution vulnerability exists in the
    Windows GDI component due to improper handling of
    objects in memory. An unauthenticated, remote attacker
    can exploit this vulnerability by convincing a user to
    visit a specially crafted website or open a specially
    crafted file, resulting in the execution of arbitrary
    code in the context of the current user. (CVE-2016-3393)

  - A remote code execution vulnerability exists in the
    Windows font library due to improper handling of
    embedded fonts. An unauthenticated, remote attacker
    can exploit this vulnerability by convincing a user to
    visit a specially crafted website or open a specially
    crafted document file, resulting in the execution of
    arbitrary code in the context of the current user.
    (CVE-2016-3396)
  
  - An elevation of privilege vulnerability exists in the
    Windows GDI component due to improper handling of
    objects in memory. A local attacker can exploit this to
    elevate privileges and execute code in kernel mode.
    (CVE-2016-7182)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/MS16-120");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, 7,
2008 R2, 2012, 8.1, RT 8.1, 2012 R2, and 10. Additionally, Microsoft
has released a set of patches for Office 2007, Office 2010, Word
Viewer, Skype for Business 2016, Lync 2010, Lync 2013, Live Meeting
2007 Console, .NET Framework 3.0 SP2, .NET Framework 3.5, .NET
Framework 3.5.1, .NET Framework 4.5.2, .NET Framework 4.6, and
Silverlight 5.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:N/AC:L/PR:N/UI:N/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:"cvss_score_source", value:"CVE-2016-7182");

  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:"2016/10/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/10/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/10/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:.net_framework");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:skype_for_business");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:lync");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:lync_basic");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:lync_attendee");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:live_meeting_console");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:silverlight");
  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("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl", "office_installed.nasl", "microsoft_lync_server_installed.nasl", "microsoft_net_framework_installed.nasl", "silverlight_detect.nasl", "smb_check_rollup.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_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
include("misc_func.inc");
include("install_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS16-120';
kbs = make_list(
  "3191203", # Windows Vista / 2008
  "3192391", # Windows 7 / 2008 R2 Security Only
  "3185330", # Windows 7 / 2008 R2 Monthly Rollup
  "3192392", # Windows 8.1 / 2012 R2 Security Only
  "3185331", # Windows 8.1 / 2012 R2 / RT 8.1 Monthly Rollup
  "3192393", # Windows 2012 Security Only
  "3185332", # Windows 2012 Monthly Rollup
  "3192440", # Windows 10 RTM
  "3192441", # Windows 10 1511
  "3194798", # Windows 10 1607
  "3188726", # .NET 3.0 SP2 Security Only
  "3189039", # .NET 4.5.2 Security Only
  "3189040", # .NET 4.6 Security Only
  "3188730", # .NET 3.5.1 Security Only
  "3188732", # .NET 3.5 on Windows 8.1 / 2012 R2 Security Only
  "3188731", # .NET 3.5 on Windows 2012 Security Only
  "3188735", # .NET 3.0 SP2 Monthly Rollup
  "3189051", # .NET 4.5.2 Monthly Rollup
  "3189052", # .NET 4.6 Monthly Rollup
  "3188740", # .NET 3.5.1 Monthly Rollup
  "3188743", # .NET 3.5 on Windows 8.1 / 2012 R2 Monthly Rollup
  "3188741", # .NET 3.5 on Windwos 2012 Monthly Rollup
  "3118301", # Office 2007 SP3
  "3118317", # Office 2010 SP2
  "3118394", # Office Word Viewer
  "3118327", # Skype for Biz 2016
  "3118348", # Lync 2013 SP1
  "3188397", # Lync 2010
  "3188399", # Lync 2010 Attendee (User level)
  "3188400", # Lync 2010 Attendee (Admin level)
  "3189647", # Live Meeting 2007 Console
  "3193713"  # Silverlight 5
);

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");
get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);

productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 8" >< productname && "8.1" >!< productname)
  audit(AUDIT_OS_SP_NOT_VULN);

if (hotfix_check_sp_range(vista:'2', win7:'1', win8:'0', win81:'0', win10:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

vuln = 0;

#  "3191203", # Windows Vista / 2008
#  "3192391", # Windows 7 / 2008 R2 Security Only
#  "3185330", # Windows 7 / 2008 R2 Monthly Rollup
#  "3192392", # Windows 8.1 / 2012 R2 Security Only
#  "3185331", # Windows 8.1 / 2012 R2 / RT 8.1 Monthly Rollup
#  "3192393", # Windows 2012 Security Only
#  "3185332", # Windows 2012 Monthly Rollup
#  "3192440", # Windows 10 RTM
#  "3192441", # Windows 10 1511
#  "3194798", # Windows 10 1607
function windows_os_is_vuln()
{
  if (
    #  "3194798", # Windows 10 1607
    smb_check_rollup(os:"10", sp:0, os_build:"14393", rollup_date:"10_2016", bulletin:bulletin, rollup_kb_list:make_list(3194798)) ||

    #  "3192441", # Windows 10 1511
    smb_check_rollup(os:"10", sp:0, os_build:"10586", rollup_date:"10_2016", bulletin:bulletin, rollup_kb_list:make_list(3192441)) ||

    #  "3192440", # Windows 10 RTM
    smb_check_rollup(os:"10", sp:0, os_build:"10240", rollup_date:"10_2016", bulletin:bulletin, rollup_kb_list:make_list(3192440)) ||

    #  "3192392", # Windows 8.1 / 2012 R2 Security Only
    #  "3185331", # Windows 8.1 / 2012 R2 / RT 8.1 Monthly Rollup
    smb_check_rollup(os:"6.3", sp:0, rollup_date:"10_2016", bulletin:bulletin, rollup_kb_list:make_list(3192392, 3185331)) ||

    #  "3192393", # Windows 2012 Security Only
    #  "3185332", # Windows 2012 Monthly Rollup
    smb_check_rollup(os:"6.2", sp:0, rollup_date:"10_2016", bulletin:bulletin, rollup_kb_list:make_list(3192393, 3185332)) ||

    #  "3192391", # Windows 7 / 2008 R2 Security Only
    #  "3185330", # Windows 7 / 2008 R2 Monthly Rollup
    smb_check_rollup(os:"6.1", sp:1, rollup_date:"10_2016", bulletin:bulletin, rollup_kb_list:make_list(3192391, 3185330)) ||

    #  "3191203", # Windows Vista / 2008
    hotfix_is_vulnerable(os:"6.0", sp:2, file:"win32k.sys", version:"6.0.6002.19693", min_version:"6.0.6002.16000", dir:"\system32", bulletin:bulletin, kb:"3191203") ||
    hotfix_is_vulnerable(os:"6.0", sp:2, file:"win32k.sys", version:"6.0.6002.24017", min_version:"6.0.6002.23000", dir:"\system32", bulletin:bulletin, kb:"3191203")
  ) vuln += 1;
}


# "3118301", # Office 2007 SP3
# "3118317", # Office 2010 SP2
# "3118394", # Office Word Viewer
function office_is_vuln()
{
  local_var office_versions, office_sp;
  local_var path;

  office_versions = hotfix_check_office_version();

  # 2010 SP2
  if (office_versions["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_officecommonfilesdir(officever:"14.0"), value:"\Microsoft Shared\Office14");
      if (hotfix_check_fversion(file:"Ogl.dll", version:"14.0.7174.5000", min_version:"14.0.0.0", path:path, bulletin:bulletin, kb:"3118317", product:"Microsoft Office 2010 SP2") == HCF_OLDER)
        vuln++;
    }
  }

  # 2007 SP3
  if (office_versions["12.0"])
  {
    office_sp = get_kb_item("SMB/Office/2007/SP");
    if (office_sp == 3)
    {
      path = hotfix_append_path(path:hotfix_get_officecommonfilesdir(officever:"12.0"), value:"\Microsoft Shared\Office12");
      if (hotfix_check_fversion(file:"Ogl.dll", version:"12.0.6757.5000", min_version:"12.0.0.0", path:path, bulletin:bulletin, kb:'3118301', product:"Microsoft Office 2007 SP3") == HCF_OLDER)
         vuln++;
    }
  }

  # Word Viewer
  if (!empty_or_null(get_kb_list("SMB/Office/WordViewer/*/ProductPath")))
  {
    path = hotfix_append_path(path:hotfix_get_officecommonfilesdir(officever:"11.0"), value:"Microsoft Shared\Office11");
    if (hotfix_check_fversion(file:"gdiplus.dll", version:"11.0.8435.0", min_version:"11.0.0.0", path:path, bulletin:bulletin, kb:'3118394', product:"Microsoft Word Viewer") == HCF_OLDER)
      vuln++;
  }
}

# "3118327", # Skype for Biz 2016
# "3118348", # Lync 2013 SP1
# "3188397", # Lync 2010
# "3188399", # Lync 2010 Attendee (User level)
# "3188400", # Lync 2010 Attendee (Admin level)
# "3189647", # Live Meeting 2007 Console
function lync_is_vuln()
{
  local_var lync_count, lync_installs, lync_install;

  lync_count = get_install_count(app_name:"Microsoft Lync");

  # Nothing to do
  if (int(lync_count) <= 0)
    return FALSE;

  lync_installs = get_installs(app_name:"Microsoft Lync");
  foreach lync_install (lync_installs[1])
  {
    if ("Live Meeting 2007 Console" >< lync_install["Product"])
    {
     if (hotfix_check_fversion(file:"pubutil.dll", version:"8.0.6362.262", min_version:"8.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3189647", product:"Live Meeting 2007 Console") == HCF_OLDER)
       vuln++;
    }
    if (lync_install["version"] =~ "^4\.0\." && "Server" >!< lync_install["Product"])
    {
      # Lync 2010
      if ("Attendee" >!< lync_install["Product"])
      {
        if (hotfix_check_fversion(file:"communicator.exe", version:"4.0.7577.4521", min_version:"4.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3188397", product:"Microsoft Lync 2010") == HCF_OLDER)
          vuln++;
      }
      # Lync 2010 Attendee
      else if ("Attendee" >< lync_install["Product"])
      {
        if ("user level" >< tolower(lync_install["Product"])) # User
        {
          if (hotfix_check_fversion(file:"MeetingJoinAxAOC.DLL", version:"4.0.7577.4521", min_version:"4.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3188399", product:lync_install["Product"]) == HCF_OLDER)
            vuln++;
        }
        else # Admin
        {
          if (hotfix_check_fversion(file:"MeetingJoinAxAOC.DLL", version:"4.0.7577.4521", min_version:"4.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3188400", product:lync_install["Product"]) == HCF_OLDER)
            vuln++;
        }
      }
    }
    # Lync 2013
    else if (lync_install["version"] =~ "^15\.0\." && "Server" >!< lync_install["Product"])
    {
      if (hotfix_check_fversion(file:"Lync.exe", version:"15.0.4867.1000", min_version:"15.0.4700.1000", path:lync_install["path"], bulletin:bulletin, kb:"3118348", product:"Microsoft Lync 2013 (Skype for Business)") == HCF_OLDER)
        vuln++;
    }
    # Skype for Business 2016
    else if (lync_install["version"] =~ "^16\.0\." && "Server" >!< lync_install["Product"])
    {
      # Office 365 Deferred channel
      if (lync_install['Channel'] == "Deferred")
        if (hotfix_check_fversion(file:"Lync.exe", version:"16.0.6965.2092", channel:"Deferred", channel_product:"Lync", path:lync_install["path"], bulletin:bulletin, kb:"3118327", product:"Skype for Business 2016") == HCF_OLDER)
          vuln++;

      # Office 365 First Release for Deferred channel
      if (lync_install['Channel'] == "First Release for Deferred")
        if (hotfix_check_fversion(file:"Lync.exe", version:"16.0.6741.2081", channel:"First Release for Deferred", channel_product:"Lync", path:lync_install["path"], bulletin:bulletin, kb:"3118327", product:"Skype for Business 2016") == HCF_OLDER)
          vuln++;

      # Office 365 Current channel
      if (lync_install['Channel'] == "Current")
        if (hotfix_check_fversion(file:"Lync.exe", version:"16.0.7369.2038", channel:"Current", channel_product:"Lync", path:lync_install["path"], bulletin:bulletin, kb:"3118327", product:"Skype for Business 2016") == HCF_OLDER)
          vuln++;

      # KB
      if (lync_install['Channel'] == "MSI" || empty_or_null(lync_install['Channel']))
        if (hotfix_check_fversion(file:"Lync.exe", version:"16.0.4444.1000", channel:"MSI", channel_product:"Lync", path:lync_install["path"], bulletin:bulletin, kb:"3118327", product:"Skype for Business 2016") == HCF_OLDER)
          vuln++;
    }
  }
}


# "3188726", # .NET 3.0 SP2 Security Only
# "3189039", # .NET 4.5.2 Security Only
# "3189040", # .NET 4.6 Security Only
# "3188730", # .NET 3.5.1 Security Only
# "3188732", # .NET 3.5 on Windows 8.1 / 2012 R2 Security Only
# "3188731", # .NET 3.5 on Windows 2012 Security Only
# "3188735", # .NET 3.0 SP2 Monthly Rollup
# "3189051", # .NET 4.5.2 Monthly Rollup
# "3189052", # .NET 4.6 Monthly Rollup
# "3188740", # .NET 3.5.1 Monthly Rollup
# "3188743", # .NET 3.5 on Windows 8.1 / 2012 R2 Monthly Rollup
# "3188741", # .NET 3.5 on Windwos 2012 Monthly Rollup
function dotnet_is_vuln()
{
  local_var dotnet_452_installed, dotnet_46_installed, dotnet_461_installed, dotnet_35_installed;
  local_var ver, missing, count, installs, install;


  # Determine if .NET 4.5.2 or 4.6 is installed
  dotnet_452_installed = FALSE;
  dotnet_46_installed  = FALSE;
  dotnet_35_installed  = FALSE;

  count = get_install_count(app_name:'Microsoft .NET Framework');
  if (count > 0)
  {
    installs = get_installs(app_name:'Microsoft .NET Framework');
    foreach install(installs[1])
    {
      ver = install["version"];
      if (ver == "4.6") dotnet_46_installed = TRUE;
      if (ver == "4.5.2") dotnet_452_installed = TRUE;
      if (ver == "3.5") dotnet_35_installed = TRUE;
    }
  }

  # "3188726", # .NET 3.0 SP2 Security Only
  # "3188735", # .NET 3.0 SP2 Monthly Rollup
  # Only on Vista / 2008
  missing = 0;
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpfgfx_v0300.dll", version:"3.0.6920.8720", min_version:"3.0.6920.0", dir:"\Microsoft.NET\Framework\v3.0\WPF");
  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3188726");
  vuln += missing;

  if (dotnet_35_installed)
  {
    # "3188730", # .NET 3.5.1 Security Only
    # "3188740", # .NET 3.5.1 Monthly Rollup
    # Only on 7 / 2008 R2
    missing = 0;
    missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"wpfgfx_v0300.dll", version:"3.0.6920.8720", dir:"\Microsoft.NET\Framework\v3.0\WPF");
    if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3188730");
    vuln += missing;

    # "3188731", # .NET 3.5 on Windows 2012 Security Only
    # "3188741", # .NET 3.5 on Windwos 2012 Monthly Rollup
    # Only on 2012
    missing = 0;
    missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"wpfgfx_v0300.dll", version:"3.0.6920.8720", dir:"\Microsoft.NET\Framework\v3.0\WPF");
    if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3188731");
    vuln += missing;

    # "3188732", # .NET 3.5 on Windows 8.1 / 2012 R2 Security Only
    # "3188743", # .NET 3.5 on Windows 8.1 / 2012 R2 Monthly Rollup
    # Only on 8.1 / 2012 R2
    missing = 0;
    missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"wpfgfx_v0300.dll", version:"3.0.6920.8720", dir:"\Microsoft.NET\Framework\v3.0\WPF");
    if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3188732");
    vuln += missing;
  }


  if (dotnet_452_installed)
  {
    # "3189039", # .NET 4.5.2 Security Only
    # "3189051", # .NET 4.5.2 Monthly Rollup
    # Only on Vista / 2008
    missing = 0;
    missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpfgfx_v0400.dll", version:"4.0.30319.36367", dir:"\Microsoft.NET\Framework\v4.0.30319");
    if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3189039");
    vuln += missing;
  }

  if (dotnet_46_installed)
  {
    # "3189040", # .NET 4.6 Security Only
    # "3189052", # .NET 4.6 Monthly Rollup
    # Only on Vista / 2008
    missing = 0;
    missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpfgfx_v0400.dll", version:"4.6.1085.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
    if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3189040");
    vuln += missing;
  }

}

# "3193713"  # Silverlight 5
function silverlight_is_vuln()
{
  local_var silver, path, report, fix;
  silver = get_kb_item("SMB/Silverlight/Version");
  if (!isnull(silver) && silver =~ "^5\.")
  {
    fix = "5.1.50901.0";
    if (ver_compare(ver:silver, fix:fix) == -1)
    {
      path = get_kb_item("SMB/Silverlight/Path");
      if (isnull(path)) path = 'n/a';

      report =
        '\n  Path              : ' + path +
        '\n  Installed version : ' + silver +
        '\n  Fixed version     : ' + fix +
        '\n';
      hotfix_add_report(report, bulletin:bulletin, kb:"3193713");
      vuln++;
    }
  }
}

dotnet_is_vuln();
office_is_vuln();
lync_is_vuln();
silverlight_is_vuln();
windows_os_is_vuln();

if (vuln > 0)
{
  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, hotfix_get_audit_report());
}

References