Vulnerabilities > CVE-2016-3303 - Improper Input Validation 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-20
nessus
exploit available
NVD
Published: 2016-08-09
Updated: 2018-10-12

Summary

The Windows font library in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, 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 remote attackers to execute arbitrary code via a crafted embedded font, aka "Windows Graphics Component RCE Vulnerability," a different vulnerability than CVE-2016-3304.

Vulnerable Configurations

Part Description Count
Application
Microsoft
8
OS
Microsoft
4

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

descriptionMicrosoft GDI+ - ValidateBitmapInfo Invalid Pointer Arithmetic Out-of-Bounds Reads (MS16-097). CVE-2016-3303. Dos exploit for Windows platform
fileexploits/windows/dos/40256.txt
idEDB-ID:40256
last seen2016-08-17
modified2016-08-17
platformwindows
port
published2016-08-17
reporterGoogle Security Research
titleMicrosoft GDI+ - ValidateBitmapInfo Invalid Pointer Arithmetic Out-of-Bounds Reads (MS16-097)
typedos

Msbulletin

bulletin_idMS16-097
bulletin_url
date2016-08-09T00:00:00
impactRemote Code Execution
knowledgebase_id3177393
knowledgebase_url
severityCritical
titleSecurity Update for Microsoft Graphics Component

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS16-097.NASL
descriptionThe remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities in the Graphics component due to improper handling of embedded fonts by the Windows font library. An unauthenticated, remote attacker can exploit these vulnerabilities, by convincing a user to visit a malicious website or open a specially crafted document file, to execute arbitrary code in the context of the current user.
last seen2020-06-01
modified2020-06-02
plugin id92843
published2016-08-10
reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/92843
titleMS16-097: Security Update for Microsoft Graphics Component (3177393)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(92843);
  script_version("1.11");
  script_cvs_date("Date: 2019/11/14");

  script_cve_id("CVE-2016-3301", "CVE-2016-3303", "CVE-2016-3304");
  script_bugtraq_id(92288, 92301, 92302);
  script_xref(name:"MSFT", value:"MS16-097");
  script_xref(name:"MSKB", value:"3174301");
  script_xref(name:"MSKB", value:"3178034");
  script_xref(name:"MSKB", value:"3176492");
  script_xref(name:"MSKB", value:"3176493");
  script_xref(name:"MSKB", value:"3176495");
  script_xref(name:"MSKB", value:"3115109");
  script_xref(name:"MSKB", value:"3115131");
  script_xref(name:"MSKB", value:"3115481");
  script_xref(name:"MSKB", value:"3115408");
  script_xref(name:"MSKB", value:"3115431");
  script_xref(name:"MSKB", value:"3174302");
  script_xref(name:"MSKB", value:"3174304");
  script_xref(name:"MSKB", value:"3174305");
  script_xref(name:"IAVA", value:"2016-A-0205");

  script_name(english:"MS16-097: Security Update for Microsoft Graphics Component (3177393)");
  script_summary(english:"Checks the file versions.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing a security update. It is,
therefore, affected by multiple vulnerabilities in the Graphics
component due to improper handling of embedded fonts by the Windows
font library. An unauthenticated, remote attacker can exploit these
vulnerabilities, by convincing a user to visit a malicious website or
open a specially crafted document file, to execute arbitrary code in
the context of the current user.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-097");
  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.");
  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_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-3304");

  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:"vuln_publication_date", value:"2016/08/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/08/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/08/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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) 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");
  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 = 'MS16-097';

kbs = make_list(
  "3174301",
  "3178034",
  "3176492",
  "3176493",
  "3176495",
  "3115109",
  "3115131",
  "3115481",
  "3115408",
  "3115431",
  "3174302",
  "3174304",
  "3174305"
);

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);

arch = get_kb_item_or_exit('SMB/ARCH', exit_code:1);
os = 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 && "Windows 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);

systemroot = hotfix_get_systemroot();
if (!systemroot) audit(AUDIT_PATH_NOT_DETERMINED, 'system root');

port = kb_smb_transport();
login  = kb_smb_login();
pass   = kb_smb_password();
domain = kb_smb_domain();

if (hotfix_check_fversion_init() == HCF_CONNECT) exit(0, "Unable to create SMB session.");

winsxs = ereg_replace(pattern:'^[A-Za-z]:(.*)', replace:"\1\WinSxS", string:systemroot);
winsxs_share = hotfix_path2share(path:systemroot);

rc = NetUseAdd(login:login, password:pass, domain:domain, share:winsxs_share);
if (rc != 1)
{
  NetUseDel();
  audit(AUDIT_SHARE_FAIL, winsxs_share);
}

files = list_dir(basedir:winsxs, level:0, dir_pat:"microsoft.windows.gdiplus", file_pat:"^gdiplus\.dll$", max_recurse:1);

if (arch == 'x86')
  key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\ApplicabilityEvaluationCache\Package_for_KB3178034~31bf3856ad364e35~x86~~";
else if (arch == 'x64')
  key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\ApplicabilityEvaluationCache\Package_for_KB3178034~31bf3856ad364e35~amd64~~";
else key = NULL;

if (!isnull(key))
{
  if (os == '6.1') key = key + '6.0.1.1';
  else if (os == '6.2') key = key + '6.1.1.1';
  else if (os == '6.3') key = key + '6.3.1.0';
  else key = NULL;
}

vuln = 0;

function windows_os_is_vuln()
{
  # hotfix_check_winsxs opens another share
  # we need to save state so our session can be restored
  local_var smb_session = make_array(
    'login',    login,
    'password', pass,
    'domain',   domain,
    'share',    winsxs_share
  );

  local_var kb = "3178034";

  vuln += hotfix_check_winsxs(
    os:'6.0',
    sp:2,
    files:files,
    versions:make_list('5.2.6002.19672', '5.2.6002.23998', '6.0.6002.19672', '6.0.6002.23998'),
    max_versions:make_list('5.2.6002.21000', '5.2.6002.99999', '6.0.6002.21000', '6.0.6002.99999'),
    bulletin:bulletin,
    kb:kb,
    key:key,
    session:smb_session
  );
  vuln += hotfix_check_winsxs(os:'6.1', sp:1, files:files, versions:make_list('6.1.7601.23508'), max_versions:make_list('6.1.7601.99999'), bulletin:bulletin, kb:kb, key:key, session:smb_session);
  vuln += hotfix_check_winsxs(os:'6.2', sp:0, files:files, versions:make_list('6.2.9200.21926'), max_versions:make_list('6.2.9200.99999'), bulletin:bulletin, kb:kb, key:key, session:smb_session);
  vuln += hotfix_check_winsxs(os:'6.3', sp:0, files:files, versions:make_list('6.3.9600.18405'), max_versions:make_list('6.3.9600.99999'), bulletin:bulletin, kb:kb, key:key, session:smb_session);

  if (
    # 10
    hotfix_is_vulnerable(os:"10", sp:0, os_build:"10240", file:"gdiplus.dll", version:"10.0.10240.17071", dir:"\system32", bulletin:bulletin, kb:"3176492") ||
    hotfix_is_vulnerable(os:"10", sp:0, os_build:"10586", file:"gdiplus.dll", version:"10.0.10586.545", min_version:"10.0.10586.0", dir:"\system32", bulletin:bulletin, kb:"3176493") ||
    hotfix_is_vulnerable(os:"10", sp:0, os_build:"14393", file:"gdiplus.dll", version:"10.0.14393.51", min_version:"10.0.14393.0", dir:"\system32", bulletin:bulletin, kb:"3176495")
  ) vuln += 1;
}

function office_is_vuln()
{
  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:"14.0.7172.5000", min_version:"14.0.0.0", path:path, bulletin:bulletin, kb:"3115131", 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:"12.0.6751.5000", min_version:"12.0.0.0", path:path, bulletin:bulletin, kb:'3115109', 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:"11.0.8432.0", min_version:"11.0.0.0", path:path, bulletin:bulletin, kb:'3115481', product:"Microsoft Word Viewer") == HCF_OLDER)
      vuln++;
  }
}

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:"8.0.6362.252", min_version:"8.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3174305", 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:"4.0.7577.4510", min_version:"4.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3174301", 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:"4.0.7577.4510", min_version:"4.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3174302", product:lync_install["Product"]) == HCF_OLDER)
            vuln++;
        }
        else # Admin
        {
          if (hotfix_check_fversion(file:"MeetingJoinAxAOC.DLL", version:"4.0.7577.4510", min_version:"4.0.0.0", path:lync_install["path"], bulletin:bulletin, kb:"3174304", 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:"15.0.4849.1000", min_version:"15.0.4700.1000", path:lync_install["path"], bulletin:bulletin, kb:"3115431", 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 (hotfix_check_fversion(file:"Lync.exe", version:"16.0.6001.1087", channel:"Deferred", channel_product:"Lync", path:lync_install["path"], bulletin:bulletin, kb:"3115408", product:"Skype for Business 2016") == HCF_OLDER)
        vuln++;
      # Office 365 Deferred channel 1602
      if (hotfix_check_fversion(file:"Lync.exe", version:"16.0.6741.2063", channel:"Deferred", channel_version:"1602", channel_product:"Lync", path:lync_install["path"], bulletin:bulletin, kb:"3115408", product:"Skype for Business 2016") == HCF_OLDER)
        vuln++;
      # Office 365 First Release for Deferred channel
      if (hotfix_check_fversion(file:"Lync.exe", version:"16.0.6965.2076", channel:"First Release for Deferred", channel_product:"Lync", path:lync_install["path"], bulletin:bulletin, kb:"3115408", product:"Skype for Business 2016") == HCF_OLDER)
        vuln++;
      # Office 365 Current channel
      if (hotfix_check_fversion(file:"Lync.exe", version:"16.0.7070.2036", channel:"Current", channel_product:"Lync", path:lync_install["path"], bulletin:bulletin, kb:"3115408", product:"Skype for Business 2016") == HCF_OLDER)
        vuln++;
      # KB
      if (hotfix_check_fversion(file:"Lync.exe", version:"16.0.4417.1000", channel:"MSI", channel_product:"Lync", path:lync_install["path"], bulletin:bulletin, kb:"3115408", product:"Skype for Business 2016") == HCF_OLDER)
        vuln++;
    }
  }
}

windows_os_is_vuln();
office_is_vuln();
lync_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, 'affected');
}

References