Vulnerabilities > CVE-2015-2504 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Microsoft .Net Framework

047910
CVSS 9.3 - CRITICAL
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
microsoft
CWE-119
critical
nessus
NVD
Published: 2015-09-09
Updated: 2018-10-12

Summary

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, 4.5.2, and 4.6 improperly counts objects before performing an array copy, which allows remote attackers to (1) execute arbitrary code via a crafted XAML browser application (XBAP) or (2) bypass Code Access Security restrictions via a crafted .NET Framework application, aka ".NET Elevation of Privilege Vulnerability."

Vulnerable Configurations

Part Description Count
Application
Microsoft
8

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.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Msbulletin

bulletin_idMS15-101
bulletin_url
date2015-09-08T00:00:00
impactElevation of Privilege
knowledgebase_id3089662
knowledgebase_url
severityImportant
titleVulnerabilities in .NET Framework Could Allow Elevation of Privilege

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS15-101.NASL
descriptionThe remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities in the Microsoft .NET Framework : - An elevation of privilege vulnerability exists due to improper validation of the number of objects in memory before they are copied into an array. A remote, unauthenticated attacker can exploit this to bypass Code Access Security (CAS) restrictions by convincing a user to run an untrusted .NET application or to visit a website containing a malicious XAML browser application. (CVE-2015-2504) - A denial of service vulnerability exists due to improper handling of specially crafted requests to an ASP .NET server. A remote, unauthenticated attacker can exploit this to degrade performance. (CVE-2015-2526)
last seen2020-05-16
modified2015-09-08
plugin id85847
published2015-09-08
reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/85847
titleMS15-101: Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (3089662)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(85847);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/15");

  script_cve_id("CVE-2015-2504", "CVE-2015-2526");
  script_bugtraq_id(76560, 76567);
  script_xref(name:"MSFT", value:"MS15-101");
  script_xref(name:"MSKB", value:"3074228");
  script_xref(name:"MSKB", value:"3074229");
  script_xref(name:"MSKB", value:"3074230");
  script_xref(name:"MSKB", value:"3074231");
  script_xref(name:"MSKB", value:"3074232");
  script_xref(name:"MSKB", value:"3074233");
  script_xref(name:"MSKB", value:"3074541");
  script_xref(name:"MSKB", value:"3074543");
  script_xref(name:"MSKB", value:"3074544");
  script_xref(name:"MSKB", value:"3074545");
  script_xref(name:"MSKB", value:"3074547");
  script_xref(name:"MSKB", value:"3074548");
  script_xref(name:"MSKB", value:"3074549");
  script_xref(name:"MSKB", value:"3074550");
  script_xref(name:"MSKB", value:"3074552");
  script_xref(name:"MSKB", value:"3074553");
  script_xref(name:"MSKB", value:"3074554");
  script_xref(name:"MSKB", value:"3081455");
  script_xref(name:"IAVA", value:"2015-A-0213-S");

  script_name(english:"MS15-101: Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (3089662)");
  script_summary(english:"Checks the file versions.");

  script_set_attribute(attribute:"synopsis", value:
"The version of the .NET Framework installed on 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 in the Microsoft .NET
Framework :

  - An elevation of privilege vulnerability exists due to
    improper validation of the number of objects in memory
    before they are copied into an array. A remote,
    unauthenticated attacker can exploit this to bypass Code
    Access Security (CAS) restrictions by convincing a user
    to run an untrusted .NET application or to visit a
    website containing a malicious XAML browser application.
    (CVE-2015-2504)

  - A denial of service vulnerability exists due to improper
    handling of specially crafted requests to an ASP .NET
    server. A remote, unauthenticated attacker can exploit
    this to degrade performance. (CVE-2015-2526)");
  # https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2015/ms15-101
  script_set_attribute(attribute:"see_also", value:"https://www.nessus.org/u?682179a8");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for .NET Framework 2.0, 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:POC/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:"vuln_publication_date", value:"2015/09/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/09/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/09/08");

  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:.net_framework");
  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) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl", "microsoft_net_framework_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_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
include("misc_func.inc");
include("install_func.inc");

# Windows Embedded is not supported by Nessus
# There are cases where this plugin is flagging embedded
# hosts improperly since this update does not apply
# to those machines
productname = get_kb_item("SMB/ProductName");
if ("Windows Embedded" >< productname)
  exit(0, "Nessus does not support bulletin / patch checks for Windows Embedded.");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS15-101';
kbs = make_list(
  '3074228', # .NET 4.5.1/4.5.2 Windows 8.1/2012 R2 DoS
  '3074229', # .NET 4.5/4.5.1/4.5.2 Windows 8/2012 Elevation of Privilege
  '3074230', # .NET 4.5/4.5.1/4.5.2 Vista/2008/7/2008 R2 DoS
  '3074231', # .NET 4.6 Windows 8/2012 DoS
  '3074232', # .NET 4.6 Windows 8.1/2012 R2 DoS
  '3074233', # .NET 4.6 Vista/2008/7/2008 R2 DoS
  '3074541', # .NET 2.0 SP2 Vista/2008 Elevation of Privilege
  '3074543', # .NET 3.5.1 Windows 7/2008 R2 Elevation of Privilege
  '3074544', # .NET 3.5 Windows 8/2012 Elevation of Privilege
  '3074545', # .NET 3.5 Windows 8.1/2012 R2 Elevation of Privilege
  '3074547', # .NET 4 Vista/2008/7/2008 R2 Elevation of Privilege
  '3074548', # .NET 4.5.1/4.5.2 Windows 8.1/2012 R2 Elevation of Privilege
  '3074549', # .NET 4.5/4.5.1/4.5.2 Windows 8/2012 DoS
  '3074550', # .NET 4.5/4.5.1/4.5.2 Vista/2008/7/2008 R2 Elevation of Privilege
  '3074552', # .NET 4.6 Windows 8/2012 Elevation of Privilege
  '3074553', # .NET 4.6 Windows 8.1/2012 R2 Elevation of Privilege
  '3074554', # .NET 4.6 Vista/2008/7/2008 R2 Elevation of Privilege
  '3081455'  # .NET 3.5/4.6 Windows 10 Elevation of Privilege/DoS
);


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);

productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);

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

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

vuln = 0;

########## KB 3074228 #############
# .NET Framework 4.5.1/4.5.2      #
# Windows 8.1 / 2012 R2           #
###################################
missing = 0;

if (dotnet_451_installed || dotnet_452_installed)
{
  # GDR
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"system.componentmodel.dataannotations.dll", version:"4.0.30319.34262", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
  # LDR
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"system.componentmodel.dataannotations.dll", version:"4.0.30319.36305", min_version:"4.0.30319.35000", dir:"\Microsoft.NET\Framework\v4.0.30319");
}

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074228");
vuln += missing;

########## KB 3074229 #############
# .NET Framework 4.5/4.5.1/4.5.2  #
# Windows 8 / 2012                #
###################################
missing = 0;
if (dotnet_45_installed || dotnet_451_installed || dotnet_452_installed)
{
  # GDR
  missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"system.drawing.dll", version:"4.0.30319.34262", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
  # LDR
  missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"system.drawing.dll", version:"4.0.30319.36305", min_version:"4.0.30319.35000", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074229");
  vuln += missing;
}

########## KB 3074230 #############
# .NET Framework 4.5/4.5.1/4.5.2  #
# Windows Vista/2008/7/2008 R2    #
###################################
missing = 0;
if (dotnet_45_installed || dotnet_451_installed || dotnet_452_installed)
{
  # GDR
  # Vista / 2008
   missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.ComponentModel.DataAnnotations.dll", version:"4.0.30319.34268", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
  # 7 / 2008 R2
  missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.ComponentModel.DataAnnotations.dll", version:"4.0.30319.34268", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");

  # LDR
  # Vista / 2008
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.ComponentModel.DataAnnotations.dll", version:"4.0.30319.36308", min_version:"4.0.30319.35000", dir:"\Microsoft.NET\Framework\v4.0.30319");
  # 7 / 2008 R2
  missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.ComponentModel.DataAnnotations.dll", version:"4.0.30319.36308", min_version:"4.0.30319.35000", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074230");
  vuln += missing;
}

############ KB 3074231 #############
#  .NET Framework 4.6/4.6 RC        #
#  Windows 8,                       #
#  Server 2012                      #
#####################################
missing = 0;
if (dotnet_46_installed)
{
  missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"System.componentmodel.dataannotations.dll", version:"4.6.93.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074231");
  vuln += missing;
}

############ KB 3074232 #############
#  .NET Framework 4.6/4.6 RC        #
#  Windows 8.1,                     #
#  Server 2012 R2                   #
#####################################
missing = 0;
if (dotnet_46_installed)
{
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"System.componentmodel.dataannotations.dll", version:"4.6.93.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074232");
  vuln += missing;
}

############ KB 3074233 #############
#  .NET Framework 4.6/4.6 RC        #
#  Windows Vista, 7                 #
#  Server 2008 / 2008 R2            #
#####################################
missing = 0;
if (dotnet_46_installed)
{
  # Vista / 2008
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.ComponentModel.DataAnnotations.dll", version:"4.6.103.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
  # 7 / 2008 R2
  missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.ComponentModel.DataAnnotations.dll", version:"4.6.103.0", min_version:"4.6.0.0",  dir:"\Microsoft.NET\Framework\v4.0.30319");

 if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074233");
  vuln += missing;
}

############ KB 3074541 #############
#  .NET Framework 2.0 SP2           #
#  Windows Vista                    #
#  Server 2008                      #
#####################################
missing = 0;
# GDR
missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"system.drawing.dll", version:"2.0.50727.4258", min_version:"2.0.50727.2000", dir:"\Microsoft.NET\Framework\v2.0.50727");
# LDR
missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"system.drawing.dll", version:"2.0.50727.8663", min_version:"2.0.50727.5000", dir:"\Microsoft.NET\Framework\v2.0.50727");

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074541");
vuln += missing;

########### KB 3074543 ############
# .NET Framework 3.5.1            #
# Windows 7                       #
# Windows Server 2008 R2          #
############################$######
missing = 0;
# GDR
missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"system.drawing.dll", version:"2.0.50727.5492", min_version:"2.0.50727.5000",  dir:"\Microsoft.NET\Framework\v2.0.50727");
# LDR
missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"system.drawing.dll", version:"2.0.50727.8663", min_version:"2.0.50727.7000",  dir:"\Microsoft.NET\Framework\v2.0.50727");

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074543");
vuln += missing;

########## KB 3074544 ###########
# .NET Framework 3.5            #
# Windows 8                     #
# Windows Server 2012           #
#################################
missing = 0;
# GDR
missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"system.drawing.dll", version:"2.0.50727.6428", min_version:"2.0.50727.0", dir:"\Microsoft.NET\Framework\v2.0.50727");
# LDR
missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"system.drawing.dll", version:"2.0.50727.8663", min_version:"2.0.50727.7000", dir:"\Microsoft.NET\Framework\v2.0.50727");

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074544");
vuln += missing;

########## KB 3074545 ###########
# .NET Framework 3.5            #
# Windows 8.1                   #
# Windows Server 2012 R2        #
#################################
missing = 0;
# GDR
missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"system.drawing.dll", version:"2.0.50727.8016", min_version:"2.0.50727.0", dir:"\Microsoft.NET\Framework\v2.0.50727");
# LDR
missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"system.drawing.dll", version:"2.0.50727.8663", min_version:"2.0.50727.8500", dir:"\Microsoft.NET\Framework\v2.0.50727");

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074545");
vuln += missing;

########### KB 3074547 ############
# .NET Framework 4                #
# Windows Vista / 7               #
# Windows Server 2008 / 2008 R2   #
###################################
missing = 0;
# GDR
# Vista / 2008
missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.Drawing.dll", version:"4.0.30319.1036", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
# 7 / 2008 R2
missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.Drawing.dll", version:"4.0.30319.1036", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");

# LDR
# Vista / 2008
missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.Drawing.dll", version:"4.0.30319.2063", min_version:"4.0.30319.1200", dir:"\Microsoft.NET\Framework\v4.0.30319");
# 7 / 2008 R2
missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.Drawing.dll", version:"4.0.30319.2063", min_version:"4.0.30319.1200", dir:"\Microsoft.NET\Framework\v4.0.30319");

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074547");
vuln += missing;

############ KB 3074548 #############
#  .NET Framework 4.5.1/4.5.2       #
#  Windows 8.1,                     #
#  Server 2012 R2                   #
#####################################
missing = 0;
if (dotnet_451_installed || dotnet_452_installed)
{
  # GDR
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"system.drawing.dll", version:"4.0.30319.34262", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
  # LDR
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"system.drawing.dll", version:"4.0.30319.36305", min_version:"4.0.30319.35000", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074548");
  vuln += missing;
}

############ KB 3074549 #############
#  .NET Framework 4.5/4.5.1/4.5.2   #
#  Windows 8,                       #
#  Server 2012                      #
#####################################
missing = 0;
if (dotnet_45_installed || dotnet_451_installed || dotnet_452_installed)
{
  # GDR
  missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"system.componentmodel.dataannotations.resources.dll", version:"4.0.30319.18010", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
  # LDR
  missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"system.componentmodel.dataannotations.resources.dll", version:"4.0.30319.19010", min_version:"4.0.30319.19000", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074549");
  vuln += missing;
}

############ KB 3074550 #############
#  .NET Framework 4.5/4.5.1/4.5.2   #
#  Windows Vista, 7                 #
#  Server 2008 / 2008 R2            #
#####################################
missing = 0;
if (dotnet_45_installed || dotnet_451_installed || dotnet_452_installed)
{
  # GDR
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.Drawing.dll", version:"4.0.30319.34270", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
  missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.Drawing.dll", version:"4.0.30319.34270", min_version:"4.0.30319.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
  # LDR
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.Drawing.dll", version:"4.0.30319.36310", min_version:"4.0.30319.35000", dir:"\Microsoft.NET\Framework\v4.0.30319");
  missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.Drawing.dll", version:"4.0.30319.36310", min_version:"4.0.30319.35000", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074550");
  vuln += missing;
}

############ KB 3074552 #############
#  .NET Framework 4.6/4.6 RC        #
#  Windows 8,                       #
#  Server 2012                      #
#####################################
missing = 0;
if (dotnet_46_installed)
{
  missing += hotfix_is_vulnerable(os:"6.2", sp:0, file:"System.drawing.dll", version:"4.6.93.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074552");
  vuln += missing;
}

############ KB 3074553 #############
#  .NET Framework 4.6/4.6 RC        #
#  Windows 8.1,                     #
#  Server 2012 R2                   #
#####################################
missing = 0;
if (dotnet_46_installed)
{
  missing += hotfix_is_vulnerable(os:"6.3", sp:0, file:"System.drawing.dll", version:"4.6.93.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074553");
  vuln += missing;
}

############ KB 3074554 #############
#  .NET Framework 4.6/4.6 RC        #
#  Windows Vista, 7                 #
#  Server 2008 / 2008 R2            #
#####################################
missing = 0;
if (dotnet_46_installed)
{
  # Windows Vista / Server 2008
  missing += hotfix_is_vulnerable(os:"6.0", sp:2, file:"System.Drawing.dll", version:"4.6.91.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
  # Windows 7 / Server 2008 R2
  missing += hotfix_is_vulnerable(os:"6.1", sp:1, file:"System.Drawing.dll", version:"4.6.91.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319");

  if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3074554");
  vuln += missing;
}

############ KB 3081455 #############
#  .NET Framework 3.5/4.6/4.6 RC    #
#  Windows 10                       #
#####################################
missing = 0;
# .NET 3.5
missing += hotfix_is_vulnerable(os:"10", sp:0, file:"system.drawing.dll", version:"2.0.50727.8663", min_version:"2.0.50727.0", dir:"\Microsoft.NET\Framework\v2.0.50727");

# .NET 4.6
if (dotnet_46_installed)
{
  missing += hotfix_is_vulnerable(os:"10", sp:0, file:"system.drawing.dll", version:"4.6.93.0", min_version:"4.6.0.0", dir:"\Microsoft.NET\Framework\v4.0.30319");
}

if (missing > 0) hotfix_add_report(bulletin:bulletin, kb:"3081455");
vuln += missing;

# Reporting
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, "affected");
}

References