Vulnerabilities > CVE-2016-0126 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Microsoft Office 2013/2016

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-119
nessus
NVD
Published: 2016-05-11
Updated: 2018-10-30

Summary

Microsoft Office 2013 SP1, 2013 RT SP1, and 2016 allows remote attackers to execute arbitrary code via a crafted Office document, aka "Microsoft Office Memory Corruption Vulnerability."

Vulnerable Configurations

Part Description Count
Application
Microsoft
2

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_idMS16-054
bulletin_url
date2016-05-10T00:00:00
impactRemote Code Execution
knowledgebase_id3155544
knowledgebase_url
severityCritical
titleSecurity Update for Microsoft Office

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS16-054.NASL
descriptionThe version of Microsoft Office installed on the remote Windows host is affected by multiple vulnerabilities : - Multiple remote code execution vulnerabilities exist due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these vulnerabilities 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-2016-0126, CVE-2016-0140, CVE-2016-0198) - 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 by convincing a user to visit a specially crafted website or open a specially crafted file, resulting in the execution arbitrary code in the context of the current user. (CVE-2016-0183)
last seen2020-06-01
modified2020-06-02
plugin id91004
published2016-05-10
reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/91004
titleMS16-054: Security Update for Microsoft Office (3155544)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(91004);
  script_version("1.12");
  script_cvs_date("Date: 2019/11/19");

  script_cve_id(
    "CVE-2016-0126",
    "CVE-2016-0140",
    "CVE-2016-0183",
    "CVE-2016-0198"
  );
  script_bugtraq_id(89938, 89953, 89962);
  script_xref(name:"MSFT", value:"MS16-054");
  script_xref(name:"MSKB", value:"2984938");
  script_xref(name:"MSKB", value:"2984943");
  script_xref(name:"MSKB", value:"3115115");
  script_xref(name:"MSKB", value:"3115116");
  script_xref(name:"MSKB", value:"3115121");
  script_xref(name:"MSKB", value:"3054984");
  script_xref(name:"MSKB", value:"3101520");
  script_xref(name:"MSKB", value:"3115123");
  script_xref(name:"MSKB", value:"3115016");
  script_xref(name:"MSKB", value:"3115025");
  script_xref(name:"MSKB", value:"3115103");
  script_xref(name:"MSKB", value:"3115094");
  script_xref(name:"MSKB", value:"3115132");
  script_xref(name:"MSKB", value:"3115117");
  script_xref(name:"MSKB", value:"3115124");
  script_xref(name:"IAVA", value:"2016-A-0124");

  script_name(english:"MS16-054: Security Update for Microsoft Office (3155544)");
  script_summary(english:"Checks the file versions.");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote Windows host is affected by
multiple remote code execution vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Microsoft Office installed on the remote Windows host
is affected by multiple vulnerabilities :

  - Multiple remote code execution vulnerabilities exist due
    to improper handling of objects in memory. An
    unauthenticated, remote attacker can exploit these
    vulnerabilities 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-2016-0126,
    CVE-2016-0140, CVE-2016-0198)

  - 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 by convincing a user to visit a specially
    crafted website or open a specially crafted file,
    resulting in the execution arbitrary code in the context
    of the current user. (CVE-2016-0183)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-054");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Microsoft Office 2007,
2010, 2013, 2013 RT, and 2016; Microsoft Word 2007, 2010, 2013,
2013 RT, and 2016; Word Viewer; Microsoft Office Compatibility Pack;
Office Web Apps 2010; and Microsoft SharePoint Server 2010.");
  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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-0198");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/05/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_compatibility_pack");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_web_apps");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_server");
  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("office_installed.nasl", "microsoft_owa_installed.nbin", "microsoft_sharepoint_installed.nbin", "smb_hotfixes.nasl", "ms_bulletin_checks_possible.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");

global_var bulletin, vuln;

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS16-054';
kbs = make_list(
  '2984938',
  '2984943',
  '3115116',
  '3115121',
  '3054984',
  '3101520',
  '3115123',
  '3115016',
  '3115025',
  '3115103',
  '3115094',
  '3115132',
  '3115117',
  '3115124'
);

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", exit_code:1);

# Get path information for Windows.
windir = hotfix_get_systemroot();
if (isnull(windir)) exit(1, "Failed to determine the location of %windir%.");
registry_init();

vuln = FALSE;

######################################################################
# Office Web Apps
######################################################################
function perform_owa_checks()
{
  local_var owa_installs, owa_install;
  local_var owa_2010_path, owa_2010_sp;
  local_var path;

  # Get installs of Office Web Apps
  owa_installs = get_installs(app_name:"Microsoft Office Web Apps");
  if (!empty_or_null(owa_installs))
  {
    foreach owa_install (owa_installs[1])
    {
      if (owa_install["Product"] == "2010")
      {
        owa_2010_path = owa_install["path"];
        owa_2010_sp = owa_install["SP"];
        break;
      }
    }
  }

  ######################################################################
  # Office Web Apps 2010 SP2
  ######################################################################
  if (owa_2010_path && (!isnull(owa_2010_sp) && owa_2010_sp == "2"))
  {
    path = hotfix_append_path(path:owa_2010_path, value:"14.0\WebServices\ConversionService\Bin\Converter");
    if (hotfix_check_fversion(file:"sword.dll", version:"14.0.7169.5000", min_version:"14.0.7015.1000", path:path, bulletin:bulletin, kb:"3115124", product:"Office Web Apps 2010") == HCF_OLDER)
      vuln = TRUE;
  }
}

function perform_office_checks()
{
  local_var office_vers, office_sp, path;
  office_vers = hotfix_check_office_version();

  # 2007
  if (office_vers["12.0"])
  {
    office_sp = get_kb_item("SMB/Office/2007/SP");
    if (!isnull(office_sp) && office_sp == 3)
    {
      path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"12.0"), value:"Microsoft Office\Office12");
      if (
        hotfix_check_fversion(file:"oartconv.dll", version: "12.0.6748.5000" , path:path, bulletin:bulletin, kb:"2984938", product:"Microsoft Office 2007 SP3") == HCF_OLDER ||
        hotfix_check_fversion(file:"oart.dll", version: "12.0.6748.5000" , path:path, bulletin:bulletin, kb:"2984943", product:"Microsoft Office 2007 SP3") == HCF_OLDER
      ) vuln = TRUE;
    }
  }

  # 2010
  if (office_vers["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_officeprogramfilesdir(officever:"14.0"), value:"Microsoft Office\Office14");
      if (
        hotfix_check_fversion(file:"wwlibcxm.dll", version: "14.0.7169.5000", path:path, bulletin:bulletin, kb:"3115121", product:"Microsoft Office 2010 SP2") == HCF_OLDER ||
        hotfix_check_fversion(file:"oartconv.dll", version: "14.0.7169.5000", path:path, bulletin:bulletin, kb:"3054984", product:"Microsoft Office 2010 SP2") == HCF_OLDER ||
        hotfix_check_fversion(file:"oart.dll", version: "14.0.7169.5000", path:path, bulletin:bulletin, kb:"3101520", product:"Microsoft Office 2010 SP2") == HCF_OLDER
      ) vuln = TRUE;
    }
  }

  # 2013
  if (office_vers["15.0"])
  {
    office_sp = get_kb_item("SMB/Office/2010/SP");
    if (!isnull(office_sp) && office_sp == 1)
    {
      path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"15.0"), value:"Microsoft Office\Office15");
      if (
        hotfix_check_fversion(file:"office.dll", version: "15.0.4823.1000", path:path, bulletin:bulletin, kb:"3115016", product:"Microsoft Office 2013 SP1") == HCF_OLDER
      ) vuln = TRUE;
    }
  }

  # 2016
  if (office_vers['16.0'])
  {
    path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"16.0"), value:"Microsoft Office\root\Office16");
    office_sp = get_kb_item("SMB/Office/2016/SP");
    if (!isnull(office_sp) && office_sp == 0)
    {
      if (
        hotfix_check_fversion(file:"mso40uires.dll", version:"16.0.4297.1000", path:path, bulletin:bulletin, kb:"3115103", product:"Microsoft Office 2016") == HCF_OLDER
      ) vuln = TRUE;
    }
  }
}

function perform_office_product_checks()
{
  local_var checks, word_vwr_checks, vwr_checks, compat_checks, kb;

  local_var installs, install, path; # For DLL checks

  ######################################################################
  # Word Checks
  ######################################################################
  checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6748.5000", "kb", "3115116"),
    "14.0", make_array("sp", 2, "version", "14.0.7169.5000", "kb", "3115123"),
    "15.0", make_array("sp", 1, "version", "15.0.4823.1000", "kb", "3115025"),
    "16.0", make_nested_list(
      make_array("sp", 0, "version", "16.0.4378.1001", "channel", "MSI", "kb", "3115094"), 
      make_array("sp", 0, "version", "16.0.6001.1078", "channel", "Deferred", "kb", "3115094"),
      make_array("sp", 0, "version", "16.0.6741.2037", "channel", "First Release for Deferred", "kb", "3115094"),
      make_array("sp", 0, "version", "16.0.6868.2062", "channel", "Current", "kb", "3115094")
    )
  );
  if (hotfix_check_office_product(product:"Word", checks:checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Word Viewer
  ######################################################################
  installs = get_kb_list("SMB/Office/WordViewer/*/ProductPath");
  if(!isnull(installs))
  {
    word_vwr_checks = make_array(
      "11.0", make_array("version", "11.0.8428.0", "kb", "3115132")
    );
    if (hotfix_check_office_product(product:"WordViewer", display_name:"Word Viewer", checks:word_vwr_checks, bulletin:bulletin))
      vuln = TRUE;
  }

  ######################################################################
  # Word Compatibility pack
  ######################################################################
  installs = get_kb_list("SMB/Office/WordCnv/*/ProductPath");
  foreach install (keys(installs))
  {
    path = installs[install];
    path = ereg_replace(pattern:'^(.+)\\\\[^\\\\]+\\.exe$', replace:"\1\", string:path, icase:TRUE);
    if(hotfix_check_fversion(path:path, file:"wordcnv.dll",  version:"12.0.6748.5000", kb:"3115115", bulletin:bulletin, min_version:"12.0.0.0", product:"Microsoft Office Compatibility Pack") == HCF_OLDER)
      vuln = TRUE;
  }
}

######################################################################
# SharePoint
######################################################################
function perform_sharepoint_checks()
{
  local_var sps_2010_path, sps_2010_sp, sps_2010_edition;
  local_var installs, install, path, prod;

  installs = get_installs(app_name:"Microsoft SharePoint Server");
  foreach install (installs[1])
  {
    if (install["Product"] == "2010")
    {
      sps_2010_path = install['path'];
      sps_2010_sp = install['SP'];
      sps_2010_edition = install['Edition'];
      break;
    }
  }

  # Office Services and Web Apps
  ######################################################################
  # SharePoint Server 2010 SP2 - Word Automation Services
  ######################################################################
  if (sps_2010_path && sps_2010_sp == "2" && sps_2010_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2010_path, value:"WebServices\WordServer\Core");
    if (hotfix_check_fversion(file:"sword.dll", version:"14.0.7169.5000", path:path, bulletin:bulletin, kb:"3115117", product:"Office SharePoint Server 2010 Word Automation Services") == HCF_OLDER)
      vuln = TRUE;
  }
}

perform_office_checks();
perform_office_product_checks();
perform_sharepoint_checks();
perform_owa_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