Vulnerabilities > CVE-2017-8550 - Cross-site Scripting vulnerability in Microsoft Office 2016

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
network
microsoft
CWE-79
nessus
exploit available
NVD
Published: 2017-06-15
Updated: 2019-03-19

Summary

A remote code execution vulnerability exists in Skype for Business when the software fails to sanitize specially crafted content, aka "Skype for Business Remote Code Execution Vulnerability".

Vulnerable Configurations

Part Description Count
Application
Microsoft
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • 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.
  • Embedding Scripts in Non-Script Elements
    This attack is a form of Cross-Site Scripting (XSS) where malicious scripts are embedded in elements that are not expected to host scripts such as image tags (<img>), comments in XML documents (< !-CDATA->), etc. These tags may not be subject to the same input validation, output validation, and other content filtering and checking routines, so this can create an opportunity for an attacker to tunnel through the application's elements and launch a XSS attack through other elements. As with all remote attacks, it is important to differentiate the ability to launch an attack (such as probing an internal network for unpatched servers) and the ability of the remote attacker to collect and interpret the output of said attack.
  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Cross-Site Scripting in Error Pages
    An attacker distributes a link (or possibly some other query structure) with a request to a third party web server that is malformed and also contains a block of exploit code in order to have the exploit become live code in the resulting error page. When the third party web server receives the crafted request and notes the error it then creates an error message that echoes the malformed message, including the exploit. Doing this converts the exploit portion of the message into to valid language elements that are executed by the viewing browser. When a victim executes the query provided by the attacker the infected error message error message is returned including the exploit code which then runs in the victim's browser. XSS can result in execution of code as well as data leakage (e.g. session cookies can be sent to the attacker). This type of attack is especially dangerous since the exploit appears to come from the third party web server, who the victim may trust and hence be more vulnerable to deception.
  • Cross-Site Scripting Using Alternate Syntax
    The attacker uses alternate forms of keywords or commands that result in the same action as the primary form but which may not be caught by filters. For example, many keywords are processed in a case insensitive manner. If the site's web filtering algorithm does not convert all tags into a consistent case before the comparison with forbidden keywords it is possible to bypass filters (e.g., incomplete black lists) by using an alternate case structure. For example, the "script" tag using the alternate forms of "Script" or "ScRiPt" may bypass filters where "script" is the only form tested. Other variants using different syntax representations are also possible as well as using pollution meta-characters or entities that are eventually ignored by the rendering engine. The attack can result in the execution of otherwise prohibited functionality.

Exploit-Db

descriptionSkype for Business 2016 - Cross-Site Scripting. CVE-2017-8550. Remote exploit for Windows platform
fileexploits/windows/remote/42316.ps1
idEDB-ID:42316
last seen2017-07-13
modified2017-07-12
platformwindows
port
published2017-07-12
reporterExploit-DB
sourcehttps://www.exploit-db.com/download/42316/
titleSkype for Business 2016 - Cross-Site Scripting
typeremote

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS17_JUN_OFFICE.NASL
descriptionThe Microsoft Office application installed on the remote Windows host is missing a security update. It is, therefore, affected by multiple vulnerabilities : - Multiple remote code execution vulnerabilities exist in Microsoft Office due to improper validation of input before loading dynamic link library (DLL) files. An unauthenticated, remote attacker can exploit these, by convincing a user to open a specially crafted Office document, to execute arbitrary code in the context of the current user. (CVE-2017-0260. CVE-2017-8506) - Multiple information disclosure vulnerabilities exist in Windows Uniscribe due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these, by convincing a user to visit a specially crafted website or to open a specially crafted document file, to disclose the contents of memory. (CVE-2017-0282, CVE-2017-0284, CVE-2017-0285, CVE-2017-8534) - Multiple remote code execution vulnerabilities exist in Windows Uniscribe due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these, by convincing a user to visit a specially crafted website or open a specially crafted document, to execute arbitrary code in the context of the current user. (CVE-2017-0283, CVE-2017-8528) - Multiple information disclosure vulnerabilities exist in the Windows GDI component due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these, by convincing a user to visit a specially crafted website or to open a specially crafted document file, to disclose the contents of memory. (CVE-2017-0286, CVE-2017-0287, CVE-2017-0288, CVE-2017-0289, CVE-2017-8531, CVE-2017-8532, CVE-2017-8533) - A remote code execution vulnerability exists in Microsoft Windows due to improper parsing of PDF files. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted PDF file, to execute arbitrary code in the context of the current user. (CVE-2017-0292) - A remote code execution vulnerability exists in Microsoft Outlook due to improper parsing of email messages. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted email message, to execute arbitrary code in the context of the current user. (CVE-2017-8507) - A security bypass vulnerability exists in Microsoft Outlook due to improper parsing of file formats. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted Office document, to bypass security feature protections. (CVE-2017-8508) - Multiple remote code execution vulnerabilities exist in Microsoft Office due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these, by convincing a user to open a specially crafted Office document, to execute arbitrary code in the context of the current user. (CVE-2017-8509, CVE-2017-8510, CVE-2017-8511, CVE-2017-8512, CVE-2017-8550) - A remote code execution vulnerability exists in Microsoft PowerPoint due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted file, to execute arbitrary code in the context of the current user. (CVE-2017-8513) - 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 Microsoft document, to execute arbitrary code in the context of the current user. (CVE-2017-8527)
last seen2020-06-01
modified2020-06-02
plugin id100782
published2017-06-14
reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/100782
titleSecurity Update for Microsoft Office Products (June 2017)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(100782);
  script_version("1.13");
  script_cvs_date("Date: 2019/11/22");

  script_cve_id(
    "CVE-2017-0260",
    "CVE-2017-0282",
    "CVE-2017-0283",
    "CVE-2017-0284",
    "CVE-2017-0285",
    "CVE-2017-0286",
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    "CVE-2017-0289",
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    "CVE-2017-8506",
    "CVE-2017-8507",
    "CVE-2017-8508",
    "CVE-2017-8509",
    "CVE-2017-8510",
    "CVE-2017-8511",
    "CVE-2017-8512",
    "CVE-2017-8513",
    "CVE-2017-8527",
    "CVE-2017-8528",
    "CVE-2017-8531",
    "CVE-2017-8532",
    "CVE-2017-8533",
    "CVE-2017-8534",
    "CVE-2017-8550"
  );
  script_bugtraq_id(
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  script_xref(name:"MSKB", value:"3118304");
  script_xref(name:"MSFT", value:"MS17-3118304");
  script_xref(name:"MSKB", value:"3118389");
  script_xref(name:"MSFT", value:"MS17-3118389");
  script_xref(name:"MSKB", value:"3127888");
  script_xref(name:"MSFT", value:"MS17-3127888");
  script_xref(name:"MSKB", value:"3162051");
  script_xref(name:"MSFT", value:"MS17-3162051");
  script_xref(name:"MSKB", value:"3178667");
  script_xref(name:"MSFT", value:"MS17-3178667");
  script_xref(name:"MSKB", value:"3191828");
  script_xref(name:"MSFT", value:"MS17-3191828");
  script_xref(name:"MSKB", value:"3191837");
  script_xref(name:"MSFT", value:"MS17-3191837");
  script_xref(name:"MSKB", value:"3191844");
  script_xref(name:"MSFT", value:"MS17-3191844");
  script_xref(name:"MSKB", value:"3191848");
  script_xref(name:"MSFT", value:"MS17-3191848");
  script_xref(name:"MSKB", value:"3191882");
  script_xref(name:"MSFT", value:"MS17-3191882");
  script_xref(name:"MSKB", value:"3191898");
  script_xref(name:"MSFT", value:"MS17-3191898");
  script_xref(name:"MSKB", value:"3191908");
  script_xref(name:"MSFT", value:"MS17-3191908");
  script_xref(name:"MSKB", value:"3191932");
  script_xref(name:"MSFT", value:"MS17-3191932");
  script_xref(name:"MSKB", value:"3191938");
  script_xref(name:"MSFT", value:"MS17-3191938");
  script_xref(name:"MSKB", value:"3191943");
  script_xref(name:"MSFT", value:"MS17-3191943");
  script_xref(name:"MSKB", value:"3191944");
  script_xref(name:"MSFT", value:"MS17-3191944");
  script_xref(name:"MSKB", value:"3191945");
  script_xref(name:"MSFT", value:"MS17-3191945");
  script_xref(name:"MSKB", value:"3203383");
  script_xref(name:"MSFT", value:"MS17-3203383");
  script_xref(name:"MSKB", value:"3203386");
  script_xref(name:"MSFT", value:"MS17-3203386");
  script_xref(name:"MSKB", value:"3203392");
  script_xref(name:"MSFT", value:"MS17-3203392");
  script_xref(name:"MSKB", value:"3203393");
  script_xref(name:"MSFT", value:"MS17-3203393");
  script_xref(name:"MSKB", value:"3203427");
  script_xref(name:"MSFT", value:"MS17-3203427");
  script_xref(name:"MSKB", value:"3203436");
  script_xref(name:"MSFT", value:"MS17-3203436");
  script_xref(name:"MSKB", value:"3203438");
  script_xref(name:"MSFT", value:"MS17-3203438");
  script_xref(name:"MSKB", value:"3203441");
  script_xref(name:"MSFT", value:"MS17-3203441");
  script_xref(name:"MSKB", value:"3203460");
  script_xref(name:"MSFT", value:"MS17-3203460");
  script_xref(name:"MSKB", value:"3203461");
  script_xref(name:"MSFT", value:"MS17-3203461");
  script_xref(name:"MSKB", value:"3203463");
  script_xref(name:"MSFT", value:"MS17-3203463");
  script_xref(name:"MSKB", value:"3203464");
  script_xref(name:"MSFT", value:"MS17-3203464");
  script_xref(name:"MSKB", value:"3203467");
  script_xref(name:"MSFT", value:"MS17-3203467");
  script_xref(name:"MSKB", value:"3203484");
  script_xref(name:"MSFT", value:"MS17-3203484");
  script_xref(name:"IAVA", value:"2017-A-0179");

  script_name(english:"Security Update for Microsoft Office Products (June 2017)");
  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 vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Office application installed on the remote Windows host
is missing a security update. It is, therefore, affected by multiple
vulnerabilities :

  - Multiple remote code execution vulnerabilities exist in
    Microsoft Office due to improper validation of input
    before loading dynamic link library (DLL) files. An
    unauthenticated, remote attacker can exploit these, by
    convincing a user to open a specially crafted Office
    document, to execute arbitrary code in the context of
    the current user. (CVE-2017-0260. CVE-2017-8506)

  - Multiple information disclosure vulnerabilities exist in
    Windows Uniscribe due to improper handling of objects in
    memory. An unauthenticated, remote attacker can exploit
    these, by convincing a user to visit a specially crafted
    website or to open a specially crafted document file, to
    disclose the contents of memory. (CVE-2017-0282,
    CVE-2017-0284, CVE-2017-0285, CVE-2017-8534)

  - Multiple remote code execution vulnerabilities exist in
    Windows Uniscribe due to improper handling of objects in
    memory. An unauthenticated, remote attacker can exploit
    these, by convincing a user to visit a specially crafted
    website or open a specially crafted document, to execute
    arbitrary code in the context of the current user.
    (CVE-2017-0283, CVE-2017-8528)

  - Multiple information disclosure vulnerabilities exist in
    the Windows GDI component due to improper handling of
    objects in memory. An unauthenticated, remote attacker
    can exploit these, by convincing a user to visit a
    specially crafted website or to open a specially crafted
    document file, to disclose the contents of memory.
    (CVE-2017-0286, CVE-2017-0287, CVE-2017-0288,
    CVE-2017-0289, CVE-2017-8531, CVE-2017-8532,
    CVE-2017-8533)

  - A remote code execution vulnerability exists in
    Microsoft Windows due to improper parsing of PDF files.
    An unauthenticated, remote attacker can exploit this, by
    convincing a user to open a specially crafted PDF file,
    to execute arbitrary code in the context of the current
    user. (CVE-2017-0292)

  - A remote code execution vulnerability exists in
    Microsoft Outlook due to improper parsing of email
    messages. An unauthenticated, remote attacker can
    exploit this, by convincing a user to open a specially
    crafted email message, to execute arbitrary code in the
    context of the current user. (CVE-2017-8507)

  - A security bypass vulnerability exists in Microsoft
    Outlook due to improper parsing of file formats. An
    unauthenticated, remote attacker can exploit this, by
    convincing a user to open a specially crafted Office
    document, to bypass security feature protections.
    (CVE-2017-8508)

  - Multiple remote code execution vulnerabilities exist in
    Microsoft Office due to improper handling of objects in
    memory. An unauthenticated, remote attacker can exploit
    these, by convincing a user to open a specially crafted
    Office document, to execute arbitrary code in the
    context of the current user. (CVE-2017-8509,
    CVE-2017-8510, CVE-2017-8511, CVE-2017-8512,
    CVE-2017-8550)

  - A remote code execution vulnerability exists in
    Microsoft PowerPoint due to improper handling of objects
    in memory. An unauthenticated, remote attacker can
    exploit this, by convincing a user to open a specially
    crafted file, to execute arbitrary code in the context
    of the current user. (CVE-2017-8513)

  - 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 Microsoft
    document, to execute arbitrary code in the context of
    the current user. (CVE-2017-8527)");
  script_set_attribute(attribute:"see_also", value:"https://portal.msrc.microsoft.com/en-us/security-guidance/summary");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Microsoft Office 2007,
2010, 2013, and 2016; Microsoft OneNote 2010; Microsoft Outlook 2007,
2010, and 2016; Microsoft PowerPoint 2007; Microsoft Word 2007, 2010,
2013, and 2016; Microsoft Word Viewer; and Microsoft Office
Compatibility Pack.");
  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:N/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:"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:"2017/06/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/06/14");

  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");
  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:onenote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:outlook");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint");
  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) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("office_installed.nasl", "onenote_installed.nbin", "microsoft_office_compatibility_pack_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 vuln;

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS17-06";
kbs = make_list(
  '3118304', # Office 2007 SP3
  '3118389', # Office 2010 SP2
  '3127888', # PowerPoint 2007 SP3
  '3162051', # Office 2013 SP1
  '3178667', # Office 2016
  '3191828', # Office 2007 SP3
  '3191837', # Office 2007 SP3
  '3191844', # Office 2010 SP2
  '3191848', # Office 2010 SP2
  '3191882', # Office 2016
  '3191898', # Outlook 2007 SP3
  '3191908', # OneNote 2010 SP2
  '3191932', # Outlook 2016
  '3191938', # Outlook 2013 SP1
  '3191943', # Office 2016
  '3191944', # Office 2016
  '3191945', # Word 2016
  '3203383', # Office 2016
  '3203386', # Office 2013 SP1
  '3203392', # Office 2013 SP1
  '3203393', # Word 2013 SP1
  '3203427', # Office Word Viewer
  '3203436', # Office 2007 SP3
  '3203438', # Office Compatibility Pack SP3
  '3203441', # Word 2007 SP3
  '3203460', # Office 2010 SP2
  '3203461', # Office 2010 SP2
  '3203463', # Office 2010 SP2
  '3203464', # Word 2010 SP2
  '3203467', # Outlook 2010 SP2
  '3203484'  # Office Word Viewer
);

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);

vuln = FALSE;
port = kb_smb_transport();

######################################################################
# Office 2007, 2010, 2013, 2016
######################################################################
function perform_office_checks()
{
  local_var office_vers, office_sp, common_path, path, prod, file, kb;
  office_vers = hotfix_check_office_version();

  ####################################################################
  # Office 2007 SP3 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\GRPHFLT"
      );
      if (hotfix_check_fversion(file:"pictim32.flt", version:"2006.1200.6769.5000", min_version:"2006.1200.0.0", path:path, kb:"3118304", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;

      path = hotfix_append_path(
        path  : common_path,
        value : "Microsoft Shared\Office12"
      );
      if (hotfix_check_fversion(file:"ogl.dll", version:"12.0.6769.5000", path:path, kb:"3191828", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
      if (hotfix_check_fversion(file:"mso.dll", version:"12.0.6770.5000", path:path, kb:"3203436", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;

      path = hotfix_get_officeprogramfilesdir(officever:"12.0");
      if (hotfix_check_fversion(file:"usp10.dll", version:"1.626.6002.24099", path:path, kb:"3191837", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
    }
  }

  ####################################################################
  # Office 2010 SP2 Checks
  # wwlibcxm.dll only exists if KB2428677 is installed
  ####################################################################
  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:"14.0.7182.5000", path:path, kb:"3203460", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
      if (hotfix_check_fversion(file:"ogl.dll", version:"14.0.7182.5000", path:path, kb:"3191848", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;

      path = hotfix_append_path(
        path  : common_path,
        value : "\Microsoft Shared\GRPHFLT"
      );
      if (hotfix_check_fversion(file:"epsimp32.flt", version:"2010.1400.7182.5000", min_version:"2010.1400.0.0", path:path, kb:"3203461", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;

      path = hotfix_get_officeprogramfilesdir(officever:"14.0");
      if (hotfix_check_fversion(file:"wwlibcxm.dll", version:"14.0.7182.5000", path:path, kb:"3203463", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
      if (hotfix_check_fversion(file:"usp10.dll", version:"1.0626.7601.23800", path:path, kb:"3191844", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
      if (hotfix_check_fversion(file:"offowc.dll", version:"14.0.7182.5000", path:path, kb:"3118389", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
    }

    # The DCF folder is not always in the same bitness as Office, so
    # check both places
    path = hotfix_get_programfilesdir();
    path = hotfix_append_path(
      path  : path,
      value : "\Microsoft Office\Office15\DCF"
    );
    if (hotfix_check_fversion(file:"office.dll", version:"15.0.4937.1000", path:path, kb:"3162051", bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;

    path = hotfix_get_programfilesdirx86();
    path = hotfix_append_path(
      path  : path,
      value : "\Microsoft Office\Office15\DCF"
    );
    if (hotfix_check_fversion(file:"office.dll", version:"15.0.4937.1000", path:path, kb:"3162051", bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;
  }

  ####################################################################
  # Office 2013 SP1 Checks
  ####################################################################
  if (office_vers["15.0"])
  {
    office_sp = get_kb_item("SMB/Office/2013/SP");
    if (!isnull(office_sp) && 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:"mso.dll", version:"15.0.4937.1000", path:path, kb:"3203386", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;

      path = hotfix_append_path(
        path  : common_path,
        value : "Microsoft Shared\GRPHFLT"
      );
      if (hotfix_check_fversion(file:"epsimp32.flt", version:"2012.1500.4931.1000", min_version:"2012.1500.0.0", path:path, kb:"3203392", bulletin:bulletin, 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) && office_sp == 0)
    {
      prod = "Microsoft Office 2016";
      common_path = hotfix_get_officecommonfilesdir(officever:"16.0");

      kb   = "3191944";
      file = "mso.dll";
      path = hotfix_append_path(
        path  : common_path,
        value : "Microsoft Shared\Office16"
      );
      if (
        hotfix_check_fversion(file:file, version:"16.0.4549.1001", channel:"MSI", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.7329.1059", channel:"Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.7726.1042", channel:"Deferred", channel_version:"1701", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.8201.2102", channel:"First Release for Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.8201.2102", channel:"Current", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER
      )
        vuln = TRUE;

      kb   = "3178667";
      file = "mso20win32client.dll";
      # path is still <common files>\microsoft shared\office16
      if (
        hotfix_check_fversion(file:file, version:"16.0.4549.1000", channel:"MSI", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.7329.1059", channel:"Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.7726.1042", channel:"Deferred", channel_version:"1701", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.8201.2102", channel:"First Release for Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.8201.2102", channel:"Current", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER
      )
        vuln = TRUE;

      kb   = "3191882";
      file = "mso30win32client.dll";
      # path is still <common files>\microsoft shared\office16
      if (
        hotfix_check_fversion(file:file, version:"16.0.4549.1000", channel:"MSI", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.7329.1059", channel:"Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.7726.1042", channel:"Deferred", channel_version:"1701", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER #||
        #hotfix_check_fversion(file:file, version:"16.0.8201.2102", channel:"First Release for Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        #hotfix_check_fversion(file:file, version:"16.0.8201.2102", channel:"Current", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER
      )
        vuln = TRUE;

      kb   = "3191943";
      file = "mso299lwin32client.dll";
      # path is still <common files>\microsoft shared\office16
      if (
        hotfix_check_fversion(file:file, version:"16.0.4549.1000", channel:"MSI", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.7329.1059", channel:"Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.7726.1042", channel:"Deferred", channel_version:"1701", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.8201.2102", channel:"First Release for Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"16.0.8201.2102", channel:"Current", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER
      )
        vuln = TRUE;

      kb   = "3203383";
      file = "epsimp32.flt";
      path = hotfix_append_path(
        path  : common_path,
        value : "Microsoft Shared\GRPHFLT"
      );
      if (
        hotfix_check_fversion(file:file, version:"2012.1600.4540.1000", min_version:"2012.1600.0.0", channel:"MSI", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"2012.1600.7329.1059", min_version:"2012.1600.0.0", channel:"Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"2012.1600.7726.1042", min_version:"2012.1600.0.0", channel:"Deferred", channel_version:"1701", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"2012.1600.8201.1003", min_version:"2012.1600.0.0", channel:"First Release for Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"2012.1600.8201.1003", min_version:"2012.1600.0.0", channel:"Current", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER
      )
        vuln = TRUE;
    }
  }
}

######################################################################
# Word 2007, 2010, 2013, 2016
######################################################################
function perform_word_checks()
{
  local_var word_checks, kb16;

  kb16 = "3191945";
  word_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6770.5000", "kb", "3203441"),
    "14.0", make_array("sp", 2, "version", "14.0.7182.5000", "kb", "3203464"),
    "15.0", make_array("sp", 1, "version", "15.0.4937.1000", "kb", "3203393"),
    "16.0", make_nested_list(
      make_array("sp", 0, "version", "16.0.4549.1000", "channel", "MSI", "kb", kb16),
      make_array("sp", 0, "version", "16.0.7369.2139", "channel", "Deferred", "kb", kb16),
      make_array("sp", 0, "version", "16.0.7766.2092", "channel", "Deferred", "channel_version", "1701", "kb", kb16),
      make_array("sp", 0, "version", "16.0.8201.2102", "channel", "First Release for Deferred", "kb", kb16),
      make_array("sp", 0, "version", "16.0.8201.2102", "channel", "Current", "kb", kb16)
    )
  );
  if (hotfix_check_office_product(product:"Word", checks:word_checks, bulletin:bulletin))
    vuln = TRUE;
}

######################################################################
# Compatibility Pack
######################################################################
function perform_comppack_checks()
{
  local_var install, installs, path;

  ####################################################################
  # 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:"12.0.6770.5000", kb:"3203438", bulletin:bulletin, min_version:"12.0.0.0", product:"Microsoft Office Compatibility Pack") == HCF_OLDER)
      vuln = TRUE;
  }
}

######################################################################
# Word Viewer
######################################################################
function perform_viewer_checks()
{
  var install, installs, path;
  installs = get_kb_list("SMB/Office/WordViewer/*/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:"gdiplus.dll", version:"11.0.8442.0", kb:"3203484", bulletin:bulletin, product:"Microsoft Word Viewer") == HCF_OLDER)
      vuln = TRUE;
  }

  path = hotfix_get_officecommonfilesdir(officever:"11.0");
  path = hotfix_append_path(path:path, value:"Microsoft Shared\Office11");
  if(hotfix_check_fversion(path:path, file:"usp10.dll", version:"1.626.6002.24099", kb:"3203427", bulletin:bulletin, product:"Microsoft Word Viewer") == HCF_OLDER)
    vuln = TRUE;
}

######################################################################
# OneNote 2010
######################################################################
function perform_onenote_checks()
{
  var install, installs, prod, path;

  installs = get_installs(app_name:'Microsoft OneNote');
  foreach install (installs[1])
  {
    if (install["product"] == "2010" && install["sp"] == 2)
    {
      prod = "Microsoft OneNote 2010 SP2";
      path = tolower(install["path"]);
      path -= "onenote.exe";
      if (hotfix_check_fversion(file:"onenotesyncpc.dll", version:"14.0.7182.5000", path:path, kb:"3191908", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
    }
  }
}

######################################################################
# Outlook 2007, 2010, 2013, 2016
######################################################################
function perform_outlook_checks()
{
  local_var checks, kb16;

  kb16 = "3191932";
  checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6770.5000", "kb", "3191898"),
    "14.0", make_array("sp", 2, "version", "14.0.7182.5000", "kb", "3203467"),
    "15.0", make_array("sp", 1, "version", "15.0.4937.1000", "kb", "3191938"),
    "16.0", make_nested_list(
      make_array("sp", 0, "version", "16.0.4549.1002", "channel", "MSI", "kb", kb16),
      make_array("sp", 0, "version", "16.0.7369.2139", "channel", "Deferred", "kb", kb16),
      make_array("sp", 0, "version", "16.0.7766.2092", "channel", "Deferred", "channel_version", "1701", "kb", kb16),
      make_array("sp", 0, "version", "16.0.8201.2102", "channel", "First Release for Deferred", "kb", kb16),
      make_array("sp", 0, "version", "16.0.8201.2102", "channel", "Current", "kb", kb16)
    )
  );
  if (hotfix_check_office_product(product:"Outlook", checks:checks, bulletin:bulletin))
    vuln = TRUE;
}

######################################################################
# PowerPoint 2007
######################################################################
function perform_powerpoint_checks()
{
  var install, installs, path;
  installs = get_kb_list("SMB/Office/PowerPoint/*/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:"ppcore.dll",  version:"12.0.6770.5000", kb:"3127888", bulletin:bulletin, min_version:"12.0.0.0", product:"Microsoft PowerPoint") == HCF_OLDER)
      vuln = TRUE;
  }
}

######################################################################
# MAIN
######################################################################
perform_office_checks();
perform_word_checks();
perform_comppack_checks();
perform_viewer_checks();
perform_onenote_checks();
perform_outlook_checks();
perform_powerpoint_checks();

if (vuln)
{
  replace_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