Vulnerabilities > CVE-2015-2454 - Permissions, Privileges, and Access Controls vulnerability in Microsoft products

047910
CVSS 2.1 - LOW
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
local
low complexity
microsoft
CWE-264
nessus
NVD
Published: 2015-08-15
Updated: 2019-05-14

Summary

The kernel-mode driver in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly constrain impersonation levels, which allows local users to gain privileges via a crafted application, aka "Windows KMD Security Feature Bypass 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_idMS15-080
bulletin_url
date2015-08-11T00:00:00
impactRemote Code Execution
knowledgebase_id3078662
knowledgebase_url
severityCritical
titleVulnerabilities in Microsoft Graphics Component Could Allow Remote Code Execution

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS15-080.NASL
descriptionThe remote Windows host is affected by multiple vulnerabilities : - Multiple remote code execution vulnerabilities exist due to the Windows Adobe Type Manager Library not properly handling specially crafted OpenType fonts. An attacker can exploit these, by using a crafted document or web page with embedded OpenType fonts, to execute arbitrary code in the context of the current user. (CVE-2015-2432, CVE-2015-2458, CVE-2015-2459, CVE-2015-2460, CVE-2015-2461, CVE-2015-2462) - Multiple remote code execution vulnerabilities exist in various components of Windows, .NET Framework, Office, Lync, and Silverlight due to a failure to properly handle TrueType fonts. An attacker can exploit these, by using a crafted document or web page with embedded TrueType fonts, to execute arbitrary code in the context of the current user. (CVE-2015-2435, CVE-2015-2455, CVE-2015-2456 CVE-2015-2463, CVE-2015-2464) - A remote code execution vulnerability exists due to Microsoft Office not properly handling Office Graphics Library (OGL) fonts. An attacker can exploit this, by using a crafted document or web page with embedded OGL fonts, to execute arbitrary code in the context of the user. (CVE-2015-2431) - A security feature bypass vulnerability exists due to a failure by the Windows kernel to properly initialize a memory address. An attacker, using a specially crafted application, can exploit this issue to bypass Kernel Address Space Layout Randomization (KASLR) and retrieve the base address of the kernel driver. (CVE-2015-2433) - An elevation of privilege vulnerability exists due to a flaw in the Windows Client/Server Run-time Subsystem (CSRSS) when terminating a process when a user logs off. An attacker can exploit this vulnerability to run code that monitors the actions of users who log on to the system, allowing the disclosure of sensitive information which could be used to elevate privileges or execute code. (CVE-2015-2453) - A security feature bypass vulnerability exists due to the Windows kernel-mode driver not properly validating and enforcing impersonation levels. An attacker can exploit this to gain elevated privileges on a targeted system. (CVE-2015-2454) - A security feature bypass vulnerability exists due to the Windows shell not properly validating and enforcing impersonation levels. An attacker can exploit this to bypass impersonation-level security and gain elevated privileges on a targeted system. (CVE-2015-2465)
last seen2020-06-01
modified2020-06-02
plugin id85348
published2015-08-12
reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/85348
titleMS15-080 : Vulnerabilities in Microsoft Graphics Component Could Allow Remote Code Execution (3078662)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(85348);
  script_version("1.13");
  script_cvs_date("Date: 2019/11/22");

  script_cve_id(
    "CVE-2015-2431",
    "CVE-2015-2432",
    "CVE-2015-2433",
    "CVE-2015-2435",
    "CVE-2015-2453",
    "CVE-2015-2454",
    "CVE-2015-2455",
    "CVE-2015-2456",
    "CVE-2015-2458",
    "CVE-2015-2459",
    "CVE-2015-2460",
    "CVE-2015-2461",
    "CVE-2015-2462",
    "CVE-2015-2463",
    "CVE-2015-2464",
    "CVE-2015-2465"
  );
  script_bugtraq_id(
    76203,
    76207,
    76209,
    76210,
    76211,
    76213,
    76215,
    76216,
    76218,
    76223,
    76225,
    76235,
    76238,
    76239,
    76240,
    76241
  );
  script_xref(name:"MSFT", value:"MS15-080");
  script_xref(name:"MSKB", value:"3054846");
  script_xref(name:"MSKB", value:"3054890");
  script_xref(name:"MSKB", value:"3055014");
  script_xref(name:"MSKB", value:"3072303");
  script_xref(name:"MSKB", value:"3072305");
  script_xref(name:"MSKB", value:"3072306");
  script_xref(name:"MSKB", value:"3072307");
  script_xref(name:"MSKB", value:"3072309");
  script_xref(name:"MSKB", value:"3072310");
  script_xref(name:"MSKB", value:"3072311");
  script_xref(name:"MSKB", value:"3075590");
  script_xref(name:"MSKB", value:"3075591");
  script_xref(name:"MSKB", value:"3075592");
  script_xref(name:"MSKB", value:"3075593");
  script_xref(name:"MSKB", value:"3078601");
  script_xref(name:"MSKB", value:"3080333");
  script_xref(name:"MSKB", value:"3081436");
  script_xref(name:"IAVA", value:"2015-A-0196");

  script_name(english:"MS15-080 : Vulnerabilities in Microsoft Graphics Component Could Allow Remote Code Execution (3078662)");
  script_summary(english:"Checks the file versions.");

  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 affected by multiple vulnerabilities :

  - Multiple remote code execution vulnerabilities exist due
    to the Windows Adobe Type Manager Library not properly
    handling specially crafted OpenType fonts. An attacker
    can exploit these, by using a crafted document or web
    page with embedded OpenType fonts, to execute arbitrary
    code in the context of the current user. (CVE-2015-2432,
    CVE-2015-2458, CVE-2015-2459, CVE-2015-2460,
    CVE-2015-2461, CVE-2015-2462)

  - Multiple remote code execution vulnerabilities exist in
    various components of Windows, .NET Framework, Office,
    Lync, and Silverlight due to a failure to properly handle
    TrueType fonts. An attacker can exploit these, by using
    a crafted document or web page with embedded TrueType
    fonts, to execute arbitrary code in the context of the
    current user. (CVE-2015-2435, CVE-2015-2455,
    CVE-2015-2456 CVE-2015-2463, CVE-2015-2464)

  - A remote code execution vulnerability exists due to
    Microsoft Office not properly handling Office Graphics
    Library (OGL) fonts. An attacker can exploit this, by
    using a crafted document or web page with embedded OGL
    fonts, to execute arbitrary code in the context of the
    user. (CVE-2015-2431)

  - A security feature bypass vulnerability exists due to
    a failure by the Windows kernel to properly initialize
    a memory address. An attacker, using a specially crafted
    application, can exploit this issue to bypass Kernel
    Address Space Layout Randomization (KASLR) and retrieve
    the base address of the kernel driver. (CVE-2015-2433)

  - An elevation of privilege vulnerability exists due to
    a flaw in the Windows Client/Server Run-time Subsystem
    (CSRSS) when terminating a process when a user logs off.
    An attacker can exploit this vulnerability to run code
    that monitors the actions of users who log on to the
    system, allowing the disclosure of sensitive information
    which could be used to elevate privileges or execute
    code. (CVE-2015-2453)

  - A security feature bypass vulnerability exists due to
    the Windows kernel-mode driver not properly validating
    and enforcing impersonation levels. An attacker can
    exploit this to gain elevated privileges on a targeted
    system. (CVE-2015-2454)

  - A security feature bypass vulnerability exists due to
    the Windows shell not properly validating and enforcing
    impersonation levels. An attacker can exploit this to
    bypass impersonation-level security and gain elevated
    privileges on a targeted system. (CVE-2015-2465)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/MS15-080");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, 7,
2008 R2, 8, RT, 2012, 8.1, RT 8.1, 2012 R2, and 10. Additionally,
Microsoft has released a set of patches for Office 2007, Office 2010,
Microsoft Lync 2010, 2010 Attendee, 2013 SP1, Microsoft Live Meeting
2007; and .NET Framework 3.5, 3.5.1, 4, 4.5, 4.5.1, 4.5.2, and 4.6.");
  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:"metasploit_name", value:'MS15-078 Microsoft Windows Font Driver Buffer Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", 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:.net_framework");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:live_meeting_console");
  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:office");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:silverlight");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  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) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl", "microsoft_lync_server_installed.nasl", "silverlight_detect.nasl", "microsoft_net_framework_installed.nasl", "office_installed.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");

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

global_var bulletin, vuln, arch;

arch = get_kb_item_or_exit('SMB/ARCH');
vuln = 0;
bulletin = 'MS15-080';

kbs = make_list(
  '3054846',  # Office 2010 SP 2
  '3054890',  # Office 2007 SP 3
  '3055014',  # Microsoft Lync 2013 SP1
  '3072303',  # .NET Framework 3.0 SP2
  '3072305',  # .NET Framework 3.5.1
  '3072306',  # .NET Framework 3.5 (Windows 8)
  '3072307',  # .NET Framework 3.5 (Windows 8.1)
  '3072309',  # .NET Framework 4
  '3072310',  # .NET Framework 4.5/4.5.1/4.5.2
  '3072311',  # .NET Framework 4.6
  '3075590',  # Mictosoft Lync 2010 Attendee (admin level install)
  '3075591',  # Microsoft Live Meeting 2007
  '3075592',  # Microsoft Lync 2010 Attendee (user level install)
  '3075593',  # Microsft Lync 2010
  '3078601',  # Windows (all but 10)
  '3080333',  # Microsoft Silverlight 5
  '3081436'   # Windows 10
);

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

# Windows Checks
function perform_windows_checks()
{
  if (
    # Windows 10
    hotfix_is_vulnerable(os:"10", sp:0, file:"ntdll.dll", version:"10.0.10240.16430", dir:"\system32", bulletin:bulletin, kb:'3081436') ||

    # Windows 8.1 / Windows Server 2012 R2
    hotfix_is_vulnerable(os:"6.3", sp:0, file:"atmfd.dll", version:"5.1.2.245", dir:"\system32", bulletin:bulletin, kb:'3078601') ||

    # Windows 8 / Windows Server 2012
    hotfix_is_vulnerable(os:"6.2", sp:0, file:"atmfd.dll", version:"5.1.2.245", dir:"\system32", bulletin:bulletin, kb:'3078601') ||

    # Windows 7 and Windows Server 2008 R2
    hotfix_is_vulnerable(os:"6.1", sp:1, file:"atmfd.dll", version:"5.1.2.245", dir:"\system32", bulletin:bulletin, kb:'3078601') ||

    # Vista / Windows 2008
    hotfix_is_vulnerable(os:"6.0", sp:2, file:"atmfd.dll", version:"5.1.2.245", dir:"\system32", bulletin:bulletin, kb:'3078601')
  )
    vuln++;
}

# dotnet checks
function perform_dotnet_checks()
{
  local_var dotnet_452_installed, dotnet_451_installed, dotnet_45_installed, dotnet_46_installed;
  local_var ver, missing, count, installs, install;

  # Determine if .NET 4.5, 4.5.1, or 4.5.2 is installed
  dotnet_452_installed = FALSE;
  dotnet_451_installed = FALSE;
  dotnet_45_installed  = FALSE;
  dotnet_46_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 == "4.5") dotnet_45_installed = TRUE;
      if (ver == "4.6") dotnet_46_installed = TRUE;
      if (ver == "4.5.1") dotnet_451_installed = TRUE;
      if (ver == "4.5.2") dotnet_452_installed = TRUE;
    }
  }

  ########## KB3072303 #############
  # .NET Framework 3.0 SP2         #
  # Windows Vista SP2              #
  # Windows Server 2008 SP2        #
  ##################################
  missing = 0;
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpfgfx_v0300.dll", version:"3.0.6920.4229", min_version:"3.0.6920.0", dir:"\Microsoft.NET\Framework\v3.0\WPF");
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpfgfx_v0300.dll", version:"3.0.6920.8684", min_version:"3.0.6920.7000", dir:"\Microsoft.NET\Framework\v3.0\WPF");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3072303");
  vuln += missing;

  ########### KB3072309 #############
  # .NET Framework 4                #
  # Windows Vista SP2               #
  # Windows Server 2008 SP2         #
  ###################################
  missing = 0;
  # Windows Vista/Server 2008 SP2
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpfgfx_v0400.dll", version:"4.0.30319.1038", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319\WPF");
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpfgfx_v0400.dll", version:"4.0.30319.2065", min_version:"4.0.30319.1200", dir:"\Microsoft.NET\Framework\v4.0.30319\WPF");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3072309");
  vuln += missing;

  ########### KB3072310 ############
  # .NET Framework 4.5/4.5.1/4.5.2 #
  # Windows Vista SP2              #
  # Windows Server 2008 SP2        #
  ##################################
  missing = 0;
  if (dotnet_45_installed || dotnet_451_installed || dotnet_452_installed)
  {
    missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpftxt_v0400.dll", version:"4.0.30319.34273", min_version:"4.0.30319.30000", dir:"\Microsoft.NET\Framework\v4.0.30319\WPF");
    missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpftxt_v0400.dll", version:"4.0.30319.36314", min_version:"4.0.30319.34500", dir:"\Microsoft.NET\Framework\v4.0.30319\WPF");
  }

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3072310");
  vuln += missing;

  ############ KB3072311 ###########
  # .NET Framework 4.6             #
  # Windows Vista SP2              #
  # Windows Server 2008 SP2        #
  ##################################
  missing = 0;
  if (dotnet_46_installed)
  {
    missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpftxt_v0400.dll", version:"4.6.101.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319\WPF");
    if(arch == "x64")
      missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"wpftxt_v0400.dll", version:"4.6.101.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework64\v4.0.30319\WPF");
  }

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3072311");
  vuln += missing;

  ############ KB3072307 ############
  # .NET Framework 3.5              #
  # Windows 8.1                     #
  # Windows Server 2012 R2          #
  ###################################
  missing = 0;
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"wpfgfx_v0300.dll", version:"3.0.6920.8008", min_version:"3.0.6920.0", dir:"\Microsoft.NET\Framework\v3.0\WPF");
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"wpfgfx_v0300.dll", version:"3.0.6920.8684", min_version:"3.0.6920.8200", dir:"\Microsoft.NET\Framework\v3.0\WPF");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3072307");
  vuln += missing;

  ########### KB3072305 #############
  # .NET Framework 3.5.1            #
  # Windows 7 SP1                   #
  # Windows Server 2008 R2 SP1      #
  ###################################
  missing = 0;
  missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"wpfgfx_v0300.dll", version:"3.0.6920.5469", min_version:"3.0.6920.0",  dir:"\Microsoft.NET\Framework\v3.0\WPF");
  missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"wpfgfx_v0300.dll", version:"3.0.6920.8684", min_version:"3.0.6920.7000",  dir:"\Microsoft.NET\Framework\v3.0\WPF");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3072305");
  vuln += missing;

  ########### KB3072306 ###########
  # .NET Framework 3.5            #
  # Windows 8                     #
  # Windows Server 2012           #
  #################################
  missing = 0;
  missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"wpfgfx_v0300.dll", version:"3.0.6920.6421", min_version:"3.0.6920.0", dir:"\Microsoft.NET\Framework\v3.0\WPF");
  missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"wpfgfx_v0300.dll", version:"3.0.6920.8684", min_version:"3.0.6920.7000", dir:"\Microsoft.NET\Framework\v3.0\WPF");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3072306");
  vuln += missing;

  ############ KB3072307 ############
  # .NET Framework 3.5              #
  # Windows 8.1                     #
  # Windows Server 2012 R2          #
  ###################################
  missing = 0;
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"wpfgfx_v0300.dll", version:"3.0.6920.8008", min_version:"3.0.6920.0", dir:"\Microsoft.NET\Framework\v3.0\WPF");
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"wpfgfx_v0300.dll", version:"3.0.6920.8684", min_version:"3.0.6920.8200", dir:"\Microsoft.NET\Framework\v3.0\WPF");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3072307");
  vuln += missing;
}

# KB3054890 / KB3054846 (Office Checks)
function perform_office_checks()
{
  local_var office_versions, office_sp;
  local_var path;

  office_versions = hotfix_check_office_version();
  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:"14.0.7155.5000", min_version:"14.0.0.0", path:path, bulletin:bulletin, kb:"3054846", product:"Microsoft Office 2010 SP2") == HCF_OLDER)
        vuln++;
    }
  }

  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:"12.0.6725.5000", min_version:"12.0.0.0", path:path, bulletin:bulletin, kb:'3054890', product:"Microsoft Office 2007 SP2") == HCF_OLDER)
        vuln++;
    }
  }
}

# Lync checks
function perform_lync_checks()
{
  local_var lync_count, lync_installs, lync_install;
  local_var count,install;

  lync_count = get_install_count(app_name:"Microsoft Lync");
  if (lync_count > 0)
  {
    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:"8.0.6362.236", min_version:"8.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3075591", product:"Live Meeting 2007 Console") == HCF_OLDER)
          vuln++;
      }
      else if (lync_install["version"] =~ "^4\.0\." && "Server" >!< lync_install["Product"])
      {
        if ("Attendee" >!< lync_install["Product"])
        {
          if (hotfix_check_fversion(file:"communicator.exe", version:"4.0.7577.4476", min_version:"4.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3075593", product:"Microsoft Lync 2010") == HCF_OLDER)
            vuln++;
        }
        else if ("Attendee" >< lync_install["Product"])
        {
          if ("user level" >< tolower(lync_install["Product"]))
          {
            if (hotfix_check_fversion(file:"MeetingJoinAxAOC.DLL", version:"4.0.7577.4476", min_version:"4.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3075592", product:lync_install["Product"]) == HCF_OLDER)
              vuln++;
          }
          else
          {
            if (hotfix_check_fversion(file:"MeetingJoinAxAOC.DLL", version:"4.0.7577.4476", min_version:"4.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3075590", product:lync_install["Product"]) == HCF_OLDER)
              vuln++;
          }
        }
      }
      else if (lync_install["version"] =~ "^15\.0\." && "Server" >!< lync_install["Product"])
      {
        if (hotfix_check_fversion(file:"Lync.exe", version:"15.0.4745.1000", min_version:"15.0.4569.1503", path:lync_install["path"], bulletin:bulletin, kb:"3055014", product:"Microsoft Lync 2013") == HCF_OLDER)
          vuln++;
      }
    }
  }
}

# Silverlight Check
function perform_silverlight_checks()
{
  local_var slver, report, path;

  slver = get_kb_item("SMB/Silverlight/Version");
  if (slver && slver =~ "^5\." && ver_compare(ver:slver, fix:"5.1.40728.0",strict:FALSE) == -1)
  {
    path = get_kb_item("SMB/Silverlight/Path");
    if (isnull(path)) path = 'n/a';

    report =
      '\n  Path              : ' + path +
      '\n  Installed version : ' + slver +
      '\n  Fixed version     : 5.1.40728.0' +
      '\n';
    hotfix_add_report(report,bulletin:bulletin, kb:"3080333");
    vuln += 1;
  }
}

perform_windows_checks();
perform_dotnet_checks();
perform_office_checks();
perform_silverlight_checks();
perform_lync_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