Vulnerabilities > CVE-2016-7266 - Improper Input Validation vulnerability in Microsoft products

047910
CVSS 6.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
microsoft
CWE-20
nessus
NVD
Published: 2016-12-20
Updated: 2018-10-12

Summary

Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Office Compatibility Pack SP3, Excel Viewer, and Excel 2016 for Mac mishandle a registry check, which allows user-assisted remote attackers to execute arbitrary commands via crafted embedded content in a document, aka "Microsoft Office Security Feature Bypass 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.
  • 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.

Msbulletin

bulletin_idMS16-148
bulletin_url
date2016-12-13T00:00:00
impactRemote Code Execution
knowledgebase_id3204068
knowledgebase_url
severityCritical
titleSecurity Update for Microsoft Office

Nessus

  • NASL familyMacOS X Local Security Checks
    NASL idMACOSX_MS16-148_OFFICE.NASL
    descriptionThe Microsoft Office application installed on the remote macOS or Mac OS X host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - An information disclosure vulnerability exists in the Graphics Device Interface (GDI) component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to circumvent the Address Space Layout Randomization (ASLR) feature and disclose sensitive memory information. (CVE-2016-7257) - Multiple remote code execution vulnerabilities exist in Microsoft Office software due to a failure to properly handle objects in memory. An unauthenticated, remote attacker can exploit these vulnerabilities by convincing a user to open a specially crafted Office file, resulting in the execution of arbitrary code in the context of the current user. (CVE-2016-7263, CVE-2016-7298) - Multiple information disclosure vulnerabilities exist in Microsoft Office software due to an out-of-bounds memory read error. An unauthenticated, remote attacker can exploit these vulnerabilities by convincing a user to open a specially crafted Office file, resulting in the disclosure of memory contents. (CVE-2016-7264, CVE-2016-7268, CVE-2016-7276, CVE-2016-7290, CVE-2016-7291) - An arbitrary command execution vulnerability exists in Microsoft Office due to improper validation of registry settings when running embedded content. An unauthenticated, remote attacker can exploit this by convincing a user to open a specially crafted document file multiple times, resulting in a bypass of security restrictions and the execution of arbitrary commands. (CVE-2016-7266) - An elevation of privilege vulnerability exists in the Microsoft AutoUpdate (MAU) application due to improper validation of updates. A local attacker can exploit this by placing a specially crafted application in a location used by the update application, resulting in the ability to execute arbitrary code in a privileged context. (CVE-2016-7300)
    last seen2020-06-01
    modified2020-06-02
    plugin id95810
    published2016-12-14
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/95810
    titleMS16-148: Security Update for Microsoft Office (3204068) (macOS)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(95810);
  script_version("1.7");
  script_cvs_date("Date: 2019/11/13");

  script_cve_id(
    "CVE-2016-7257",
    "CVE-2016-7263",
    "CVE-2016-7264",
    "CVE-2016-7266",
    "CVE-2016-7268",
    "CVE-2016-7276",
    "CVE-2016-7290",
    "CVE-2016-7291",
    "CVE-2016-7298",
    "CVE-2016-7300"
  );
  script_bugtraq_id(
    94662,
    94668,
    94670,
    94671,
    94672,
    94720,
    94755,
    94769,
    94784
  );
  script_xref(name:"MSFT", value:"MS16-148");
  script_xref(name:"IAVA", value:"2016-A-0345");
  script_xref(name:"MSKB", value:"3198800");
  script_xref(name:"MSKB", value:"3198808");

  script_name(english:"MS16-148: Security Update for Microsoft Office (3204068) (macOS)");
  script_summary(english:"Checks the version of Microsoft Office.");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote macOS or Mac OS X host is
affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Office application installed on the remote macOS or Mac
OS X host is missing a security update. It is, therefore, affected by
multiple vulnerabilities :

  - An information disclosure vulnerability exists in the
    Graphics Device Interface (GDI) component due to
    improper handling of objects in memory. A local attacker
    can exploit this, via a specially crafted application,
    to circumvent the Address Space Layout Randomization
    (ASLR) feature and disclose sensitive memory
    information. (CVE-2016-7257)

  - Multiple remote code execution vulnerabilities exist in
    Microsoft Office software due to a failure to properly
    handle objects in memory. An unauthenticated, remote
    attacker can exploit these vulnerabilities by convincing
    a user to open a specially crafted Office file,
    resulting in the execution of arbitrary code in the
    context of the current user. (CVE-2016-7263,
    CVE-2016-7298)

  - Multiple information disclosure vulnerabilities exist in
    Microsoft Office software due to an out-of-bounds memory
    read error. An unauthenticated, remote attacker can
    exploit these vulnerabilities by convincing a user to
    open a specially crafted Office file, resulting in the
    disclosure of memory contents. (CVE-2016-7264,
    CVE-2016-7268, CVE-2016-7276, CVE-2016-7290,
    CVE-2016-7291)

  - An arbitrary command execution vulnerability exists in
    Microsoft Office due to improper validation of registry
    settings when running embedded content. An
    unauthenticated, remote attacker can exploit this by
    convincing a user to open a specially crafted document
    file multiple times, resulting in a bypass of security
    restrictions and the execution of arbitrary commands.
    (CVE-2016-7266)

  - An elevation of privilege vulnerability exists in the
    Microsoft AutoUpdate (MAU) application due to improper
    validation of updates. A local attacker can exploit this
    by placing a specially crafted application in a location
    used by the update application, resulting in the ability
    to execute arbitrary code in a privileged context.
    (CVE-2016-7300)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/MS16-148");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Microsoft Office for Mac
2011, Microsoft Office 2016 for Mac, Microsoft Excel for Mac 2011,
Microsoft Excel 2016 for Mac, Microsoft Word for Mac 2011, Microsoft
Word 2016 for Mac, and Microsoft Auto Updater for Mac.");
  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-2016-7298");

  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:"2016/12/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/12/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/12/14");

  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_for_mac");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel_for_mac");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:auto_updater_for_mac");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("macosx_office_installed.nbin");
  script_require_keys("Host/MacOSX/Version");
  script_require_ports("installed_sw/Office for Mac 2011", "installed_sw/Microsoft Outlook", "installed_sw/Microsoft Excel", "installed_sw/Microsoft Word", "installed_sw/Microsoft PowerPoint", "installed_sw/Microsoft OneNote");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("install_func.inc");

os = get_kb_item("Host/MacOSX/Version");
if (!os) audit(AUDIT_OS_NOT, "Mac OS X");

# Office 2011
apps = make_list(
  "Office for Mac 2011",
  "Microsoft Outlook",
  "Microsoft Excel",
  "Microsoft Word",
  "Microsoft PowerPoint",
  "Microsoft OneNote"
);

report = "";

foreach app (apps)
{
  installs = get_installs(app_name:app);
  if (isnull(installs[1])) continue;
  foreach install (installs[1])
  {
    version = install['version'];
    path    = install['path'];
    app_label = app;
    if (version =~ "^14\.")
    {
      if (app !~ " for Mac 2011$") app_label += " for Mac 2011";
      fix = '14.7.1';
    }
    else
    {
      if (version =~ "^15\.") app_label += " for Mac 2016";
      fix = '15.29';
      fix_disp = '15.29 (161209)';
    }

    if (ver_compare(ver:version, fix:fix, strict:FALSE) < 0)
    {
      report +=
        '\n  Product           : ' + app_label +
        '\n  Installed version : ' + version;

      if (!empty_or_null(fix_disp))
      {
        report += '\n  Fixed version     : ' + fix_disp;
        fix_disp = '';
      }
      else report += '\n  Fixed version     : ' + fix;

      os = get_kb_item("Host/MacOSX/Version");

      if (os =~ "^Mac OS X 10\.[0-9](\.|$)" && app_label =~ " for Mac 2016$")
        report += '\n  Note              : Update will require Mac OS X 10.10.0 or later.\n';
      else report += '\n';
    }
  }
}

# Report findings.
if (!empty(report))
{
  if (report_verbosity > 0) security_hole(port:0, extra:report);
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS16-148.NASL
    descriptionThe Microsoft Office application or Microsoft Office Services and Web Apps installed on the remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - An arbitrary command execution vulnerability exists in Microsoft Office due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this by convincing a user to open a specially crafted Office file, resulting in a bypass of security restrictions and the execution of arbitrary commands. (CVE-2016-7262) - Multiple remote code execution vulnerabilities exist in Microsoft Office software due to a failure to properly handle objects in memory. An unauthenticated, remote attacker can exploit these vulnerabilities by convincing a user to open a specially crafted Office file, resulting in the execution of arbitrary code in the context of the current user. (CVE-2016-7263, CVE-2016-7277, CVE-2016-7289, CVE-2016-7298) - Multiple information disclosure vulnerabilities exist in Microsoft Office software due to an out-of-bounds memory read error. An unauthenticated, remote attacker can exploit these vulnerabilities by convincing a user to open a specially crafted Office file, resulting in the disclosure of memory contents. (CVE-2016-7264, CVE-2016-7265, CVE-2016-7268, CVE-2016-7276, CVE-2016-7290, CVE-2016-7291) - An arbitrary command execution vulnerability exists in Microsoft Office due to improper validation of registry settings when running embedded content. An unauthenticated, remote attacker can exploit this by convincing a user to open a specially crafted document file multiple times, resulting in a bypass of security restrictions and the execution of arbitrary commands. (CVE-2016-7266) - A security bypass vulnerability exists in Microsoft Office due to improper parsing of file formats. An unauthenticated, remote attacker can exploit this by convincing a user to open a specially crafted Office file, resulting in a bypass security restrictions. (CVE-2016-7267) - An elevation of privilege vulnerability exists in Microsoft Office due to improper validation before loading libraries. A local attacker can exploit this, via a specially crafted application, to gain elevated privileges. (CVE-2016-7275)
    last seen2020-06-01
    modified2020-06-02
    plugin id95811
    published2016-12-14
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/95811
    titleMS16-148: Security Update for Microsoft Office (3204068)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(95811);
  script_version("1.6");
  script_cvs_date("Date: 2019/11/13");

  script_cve_id(
    "CVE-2016-7262",
    "CVE-2016-7263",
    "CVE-2016-7264",
    "CVE-2016-7265",
    "CVE-2016-7266",
    "CVE-2016-7267",
    "CVE-2016-7268",
    "CVE-2016-7275",
    "CVE-2016-7276",
    "CVE-2016-7277",
    "CVE-2016-7289",
    "CVE-2016-7290",
    "CVE-2016-7291",
    "CVE-2016-7298"
  );
  script_bugtraq_id(
    94662,
    94664,
    94665,
    94668,
    94670,
    94671,
    94672,
    94715,
    94718,
    94720,
    94721,
    94769
  );
  script_xref(name:"MSFT", value:"MS16-148");
  script_xref(name:"MSKB", value:"3128020");
  script_xref(name:"MSKB", value:"2883033");
  script_xref(name:"MSKB", value:"3127986");
  script_xref(name:"MSKB", value:"3127968");
  script_xref(name:"MSKB", value:"3128029");
  script_xref(name:"MSKB", value:"3127892");
  script_xref(name:"MSKB", value:"3128037");
  script_xref(name:"MSKB", value:"3128019");
  script_xref(name:"MSKB", value:"3128025");
  script_xref(name:"MSKB", value:"3128022");
  script_xref(name:"MSKB", value:"3128024");
  script_xref(name:"MSKB", value:"3128023");
  script_xref(name:"MSKB", value:"3128016");
  script_xref(name:"MSKB", value:"3128008");
  script_xref(name:"MSKB", value:"3128026");
  script_xref(name:"MSKB", value:"3118380");
  script_xref(name:"MSKB", value:"3128032");
  script_xref(name:"MSKB", value:"2889841");
  script_xref(name:"MSKB", value:"3128034");
  script_xref(name:"MSKB", value:"3114395");
  script_xref(name:"MSKB", value:"3128035");
  script_xref(name:"MSKB", value:"3128044");
  script_xref(name:"MSKB", value:"3128043");
  script_xref(name:"MSKB", value:"3127995");
  script_xref(name:"IAVA", value:"2016-A-0345");

  script_name(english:"MS16-148: Security Update for Microsoft Office (3204068)");
  script_summary(english:"Checks the file versions.");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote host is affected by multiple
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Office application or Microsoft Office Services and Web
Apps installed on the remote Windows host is missing a security
update. It is, therefore, affected by multiple vulnerabilities :

  - An arbitrary command execution vulnerability exists in
    Microsoft Office due to improper validation of
    user-supplied input. An unauthenticated, remote attacker
    can exploit this by convincing a user to open a
    specially crafted Office file, resulting in a bypass of
    security restrictions and the execution of arbitrary
    commands. (CVE-2016-7262)

  - Multiple remote code execution vulnerabilities exist in
    Microsoft Office software due to a failure to properly
    handle objects in memory. An unauthenticated, remote
    attacker can exploit these vulnerabilities by convincing
    a user to open a specially crafted Office file,
    resulting in the execution of arbitrary code in the
    context of the current user. (CVE-2016-7263,
    CVE-2016-7277, CVE-2016-7289, CVE-2016-7298)

  - Multiple information disclosure vulnerabilities exist in
    Microsoft Office software due to an out-of-bounds memory
    read error. An unauthenticated, remote attacker can
    exploit these vulnerabilities by convincing a user to
    open a specially crafted Office file, resulting in the
    disclosure of memory contents. (CVE-2016-7264,
    CVE-2016-7265, CVE-2016-7268, CVE-2016-7276,
    CVE-2016-7290, CVE-2016-7291)

  - An arbitrary command execution vulnerability exists in
    Microsoft Office due to improper validation of registry
    settings when running embedded content. An
    unauthenticated, remote attacker can exploit this by
    convincing a user to open a specially crafted document
    file multiple times, resulting in a bypass of security
    restrictions and the execution of arbitrary commands.
    (CVE-2016-7266)

  - A security bypass vulnerability exists in Microsoft
    Office due to improper parsing of file formats. An
    unauthenticated, remote attacker can exploit this by
    convincing a user to open a specially crafted Office
    file, resulting in a bypass security restrictions.
    (CVE-2016-7267)

  - An elevation of privilege vulnerability exists in
    Microsoft Office due to improper validation before
    loading libraries. A local attacker can exploit this,
    via a specially crafted application, to gain elevated
    privileges. (CVE-2016-7275)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/MS16-148");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Microsoft Office 2007,
2010, 2013, 2013 RT, and 2016; Microsoft Excel 2007, 2010, 2013,
2013 RT, and 2016; Microsoft Word 2007, 2010; Microsoft Publisher 2010
Office Compatibility Pack; Excel Viewer; Word Viewer; Microsoft
SharePoint Server 2007 and 2010; and Office Web Apps 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: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-2016-7298");

  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:"2016/12/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/12/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/12/14");

  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:excel");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel_viewer");
  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:publisher");
  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 = 'MS16-148';
kbs = make_list(
  '3128020', # Office 2007 SP3
  '2883033',
  '3127986', # Office 2016
  '3127968', # Office 2013 SP1
  '3128029', # SharePoint Excel Services 2010 SP2
  '3127892', # SharePoint Excel Services 2007 SP3
  '3128037', # Excel 2010 SP2
  '3128019', # Excel 2007 SP3
  '3128025', # Word 2007 SP3
  '3128022', # Office Compatibility Pack SP3
  '3128024',
  '3128023', # Excel Viewer
  '3128016', # Excel 2016
  '3128008', # Excel 2013 SP1
  '3128026', # SharePoint Word Automation Services 2010 SP2
  '3118380', # Office 2010 SP2
  '3128032',
  '2889841',
  '3128034', # Word 2010 SP2
  '3114395', # Publisher 2010 SP2
  '3128035', # Office Web Apps Server 2010 SP2
  '3128044', # Word Viewer
  '3128043',
  '3127995'
);

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 owa_2013_path, owa_2013_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"];
      }
    }
  }

  ######################################################################
  # 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:"14.0.7177.5000", min_version:"14.0.7015.1000", path:path, bulletin:bulletin, kb:"3128035", product:"Office Web Apps 2010") == HCF_OLDER)
      vuln = TRUE;
  }
}

######################################################################
# SharePoint
######################################################################
function perform_sharepoint_checks()
{
  local_var sps_2010_path, sps_2010_sp, sps_2010_edition;
  local_var sps_2007_path, sps_2007_sp, sps_2007_edition;
  local_var installs, install, path, commonfiles;

  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'];
    }
    else if (install["Product"] == "2007")
    {
      sps_2007_path = install['path'];
      sps_2007_sp = install['SP'];
      sps_2007_edition = install['Edition'];
    }
  }

  commonfiles = hotfix_get_commonfilesdir();
  if (!commonfiles) commonfiles = hotfix_get_commonfilesdirx86();

  ######################################################################
  # SharePoint Server 2010 SP2 - Word Automation Services / Excel 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:"14.0.7177.5000", path:path, bulletin:bulletin, kb:"3128026", product:"Office SharePoint Server 2010 Word Automation Services") == HCF_OLDER)
      vuln = TRUE;

    path = hotfix_append_path(path:sps_2010_path, value:"Bin");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"14.0.7177.5000", path:path, bulletin:bulletin, kb:"3128029", product:"Office SharePoint Server 2010 Excel Services") == HCF_OLDER)
      vuln = TRUE;
  }

  ######################################################################
  # SharePoint Server 2007 SP3 - Excel Services
  ######################################################################
  if (sps_2007_path && sps_2007_sp == "3" && sps_2007_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2007_path, value:"Bin");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"12.0.6762.5000", path:path, bulletin:bulletin, kb:"3127892", product:"Office SharePoint Server 2007 Excel Services") == HCF_OLDER)
      vuln = TRUE;
  }
}
 
function perform_office_checks()
{
  local_var office_vers, office_sp, common_path, path, prod, kb;
  office_vers = hotfix_check_office_version();

  ######################################################################
  # Office 2007 Checks
  ######################################################################
  if (office_vers["12.0"])
  {
    office_sp = get_kb_item("SMB/Office/2007/SP");
    if (!isnull(office_sp) && office_sp == 3)
    {
      prod = "Microsoft Office 2007 SP3";
      common_path = hotfix_get_officecommonfilesdir(officever:"12.0");

      path = hotfix_append_path(path:common_path, value:"Microsoft Shared\Office12");
      if (
        hotfix_check_fversion(file:"mso.dll", version:"12.0.6762.5000", path:path, bulletin:bulletin, kb:"3128020", product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:"usp10.dll", version:"1.0626.6002.24030", path:path, bulletin:bulletin, kb:"2883033", product:prod) == HCF_OLDER
      ) vuln = TRUE;
    }
  }

  ######################################################################
  # Office 2010 Checks
  ######################################################################
  if (office_vers["14.0"])
  {
    office_sp = get_kb_item("SMB/Office/2010/SP");
    if (!isnull(office_sp) && office_sp == 2)
    {
      prod = "Microsoft Office 2010 SP2";
      common_path = hotfix_get_officecommonfilesdir(officever:"14.0");

      path = hotfix_append_path(path:common_path, value:"Microsoft Shared\Office14");
      if (
        hotfix_check_fversion(file:"mso.dll", version:"14.0.7177.5000", path:path, bulletin:bulletin, kb:"3118380", product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:"wwlibcxm.dll", version:"14.0.7177.5000", path:path, bulletin:bulletin, kb:"3128032", product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:"usp10.dll", version:"1.0626.7601.23585", path:path, bulletin:bulletin, kb:"2889841", product:prod) == HCF_OLDER
      ) vuln = TRUE;
    }
  }

  ######################################################################
  # Office 2013 Checks
  ######################################################################
  if (office_vers["15.0"])
  {
    office_sp = get_kb_item("SMB/Office/2013/SP");
    if (!isnull(office_sp) && int(office_sp) == 1)
    {
      prod = "Microsoft Office 2013 SP1";
      common_path = hotfix_get_officecommonfilesdir(officever:"15.0");

      path = hotfix_append_path(path:common_path, value:"Microsoft Shared\Office15");
      if (hotfix_check_fversion(file:"msointl.dll", version:"15.0.4869.1000", path:path, bulletin:bulletin, kb:"3127968", product:prod) == HCF_OLDER)
        vuln = TRUE;
    }
  }

  ######################################################################
  # Office 2016 Checks
  ######################################################################
  if (office_vers["16.0"])
  {
    office_sp = get_kb_item("SMB/Office/2016/SP");
    if (!isnull(office_sp) && int(office_sp) == 0)
    {
      prod = "Microsoft Office 2016";
      path = hotfix_append_path(path:hotfix_get_officecommonfilesdir(officever:"16.0"), value:"Microsoft Shared\Office16");
      if (hotfix_check_fversion(file:"msointl.dll", version:"16.0.4471.1000", path:path, bulletin:bulletin, kb:"3127986", product:prod) == HCF_OLDER)
        vuln = TRUE;
    }
  }
}

function perform_office_product_checks()
{
  local_var excel_checks, word_checks, onenote_checks, outlook_checks, ppt_vwr_checks, excel_compat_checks,excel_vwr_checks,word_vwr_checks,powerpoint_checks,publisher_checks;

  local_var installs, install, path; # For DLL checks

  ######################################################################
  # Excel Checks
  ######################################################################
  excel_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6762.5000", "kb", "3128019"),
    "14.0", make_array("sp", 2, "version", "14.0.7177.5000", "kb", "3128037"),
    "15.0", make_array("sp", 1, "version", "15.0.4885.1000", "kb", "3128008"),
    "16.0", make_nested_list(
      make_array("sp", 0, "version", "16.0.4471.1000", "channel", "MSI", "kb", "3128016"),
      make_array("sp", 0, "version", "16.0.6741.2098", "channel", "Deferred", "kb", "3128016"),
      make_array("sp", 0, "version", "16.0.6965.2115", "channel", "Deferred", "channel_version", "1605", "kb", "3128016"),
      make_array("sp", 0, "version", "16.0.7369.2095", "channel", "First Release for Deferred", "kb", "3128016"),
      make_array("sp", 0, "version", "16.0.7571.2075", "channel", "Current", "kb", "3128016")
    )
  );
  if (hotfix_check_office_product(product:"Excel", checks:excel_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Word Checks
  ######################################################################
  word_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6762.5000", "kb", "3128025"),
    "14.0", make_array("sp", 2, "version", "14.0.7177.5000", "kb", "3128034")
  );
  if (hotfix_check_office_product(product:"Word", checks:word_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Publisher Checks
  ######################################################################
  publisher_checks = make_array(
    "14.0", make_array("sp", 2, "version", "14.0.7162.5000", "kb", "3114395")
  );
  if (hotfix_check_office_product(product:"Publisher", checks:publisher_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Excel Viewer
  ######################################################################
  excel_vwr_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6762.5000", "kb", "3128023")
  );
  if (hotfix_check_office_product(product:"ExcelViewer", display_name:"Excel Viewer", checks:excel_vwr_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Word Viewer
  ######################################################################
  word_vwr_checks = make_array(
    "11.0", make_array("version", "11.0.8438.0", "kb", "3128044")
  );
  if (hotfix_check_office_product(product:"WordViewer", display_name:"Word Viewer", checks:word_vwr_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Excel Compatibility pack
  ######################################################################
  excel_compat_checks = make_array(
    "12.0", make_array("version", "12.0.6762.5000", "kb", "3128022")
  );
  if (hotfix_check_office_product(product:"ExcelCnv", display_name:"Office Compatibility Pack SP3", checks:excel_compat_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Word Compatibility pack
  ######################################################################
  installs = get_kb_list("SMB/Office/WordCnv/*/ProductPath");
  if (!isnull(installs))
  {
    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:"wrd12cnv.dll", version:"12.0.6762.5000", kb:"3128024", bulletin:bulletin, min_version:"12.0.0.0", product:"Microsoft Office Compatibility Pack") == HCF_OLDER)
        vuln = TRUE;
    }
  }
}

perform_office_checks();
perform_office_product_checks();
perform_owa_checks();
perform_sharepoint_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