Vulnerabilities > CVE-2016-7182 - Improper Input Validation vulnerability in Microsoft products

047910
CVSS 10.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
microsoft
CWE-20
critical
nessus
exploit available
NVD
Published: 2016-10-14
Updated: 2018-10-12

Summary

The Graphics component 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; Windows 10 Gold, 1511, and 1607; Office 2007 SP3; Office 2010 SP2; Word Viewer; Skype for Business 2016; Lync 2013 SP1; Lync 2010; Lync 2010 Attendee; and Live Meeting 2007 Console allows attackers to execute arbitrary code via a crafted True Type font, aka "True Type Font Parsing Elevation of Privilege Vulnerability."

Vulnerable Configurations

Part Description Count
Application
Microsoft
8
OS
Microsoft
11

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.

Exploit-Db

descriptionWindows win32k.sys - TTF Processing win32k!sbit_Embolden / win32k!ttfdCloseFontContext Use-After-Free (MS16-120). CVE-2016-7182. Dos exploit for Windows plat...
idEDB-ID:40599
last seen2016-10-21
modified2016-10-20
published2016-10-20
reporterGoogle Security Research
sourcehttps://www.exploit-db.com/download/40599/
titleWindows win32k.sys - TTF Processing win32k!sbit_Embolden / win32k!ttfdCloseFontContext Use-After-Free (MS16-120)

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