Vulnerabilities > CVE-2019-1264 - Improper Input Validation vulnerability in Microsoft Office, Office 365 Proplus and Project

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: 2019-09-11
Updated: 2019-09-12

Summary

A security feature bypass vulnerability exists when Microsoft Office improperly handles input, aka 'Microsoft Office Security Feature Bypass Vulnerability'.

Vulnerable Configurations

Part Description Count
Application
Microsoft
9

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.

Nessus

  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS19_SEP_OFFICE.NASL
    descriptionThe Microsoft Office Products are missing security updates. It is, therefore, affected by multiple vulnerabilities : - A remote code execution vulnerability exists when the Windows Jet Database Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system. An attacker could exploit this vulnerability by enticing a victim to open a specially crafted file. The update addresses the vulnerability by correcting the way the Windows Jet Database Engine handles objects in memory. (CVE-2019-1246) - A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2019-1297) - An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the users computer or data. (CVE-2019-1263) - A security feature bypass vulnerability exists when Microsoft Office improperly handles input. An attacker who successfully exploited the vulnerability could execute arbitrary commands. In a file-sharing attack scenario, an attacker could provide a specially crafted document file designed to exploit the vulnerability, and then convince a user to open the document file and interact with the document by clicking a specific cell. The update addresses the vulnerability by correcting how Microsoft Office handles input. (CVE-2019-1264)
    last seen2020-06-01
    modified2020-06-02
    plugin id128648
    published2019-09-10
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/128648
    titleSecurity Updates for Microsoft Office Products (September 2019)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#
include('compat.inc');

if (description)
{
  script_id(128648);
  script_version("1.8");
  script_cvs_date("Date: 2020/01/30");

  script_cve_id(
    "CVE-2019-1246",
    "CVE-2019-1263",
    "CVE-2019-1264",
    "CVE-2019-1297"
  );
  script_xref(name:"MSKB", value:"4464566");
  script_xref(name:"MSKB", value:"4475607");
  script_xref(name:"MSKB", value:"4475599");
  script_xref(name:"MSKB", value:"4475611");
  script_xref(name:"MSKB", value:"4475583");
  script_xref(name:"MSKB", value:"4475591");
  script_xref(name:"MSFT", value:"MS19-4464566");
  script_xref(name:"MSFT", value:"MS19-4475607");
  script_xref(name:"MSFT", value:"MS19-4475599");
  script_xref(name:"MSFT", value:"MS19-4475611");
  script_xref(name:"MSFT", value:"MS19-4475583");
  script_xref(name:"MSFT", value:"MS19-4475591");

  script_name(english:"Security Updates for Microsoft Office Products (September 2019)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Office Products are affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Office Products are missing security updates.
It is, therefore, affected by multiple vulnerabilities :

  - A remote code execution vulnerability exists when the
    Windows Jet Database Engine improperly handles objects
    in memory. An attacker who successfully exploited this
    vulnerability could execute arbitrary code on a victim
    system. An attacker could exploit this vulnerability by
    enticing a victim to open a specially crafted file. The
    update addresses the vulnerability by correcting the way
    the Windows Jet Database Engine handles objects in
    memory. (CVE-2019-1246)

  - A remote code execution vulnerability exists in
    Microsoft Excel software when the software fails to
    properly handle objects in memory. An attacker who
    successfully exploited the vulnerability could run
    arbitrary code in the context of the current user. If
    the current user is logged on with administrative user
    rights, an attacker could take control of the affected
    system. An attacker could then install programs; view,
    change, or delete data; or create new accounts with full
    user rights.  (CVE-2019-1297)

  - An information disclosure vulnerability exists when
    Microsoft Excel improperly discloses the contents of its
    memory. An attacker who exploited the vulnerability
    could use the information to compromise the users
    computer or data.  (CVE-2019-1263)

  - A security feature bypass vulnerability exists when
    Microsoft Office improperly handles input. An attacker
    who successfully exploited the vulnerability could
    execute arbitrary commands. In a file-sharing attack
    scenario, an attacker could provide a specially crafted
    document file designed to exploit the vulnerability, and
    then convince a user to open the document file and
    interact with the document by clicking a specific cell.
    The update addresses the vulnerability by correcting how
    Microsoft Office handles input. (CVE-2019-1264)");
  # https://support.microsoft.com/en-us/help/4464566/security-update-for-office-2010-september-10-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e3c39b6e");
  # https://support.microsoft.com/en-us/help/4475607/security-update-for-office-2013-september-10-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8c55c5d1");
  # https://support.microsoft.com/en-us/help/4475599/security-update-for-office-2010-september-10-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?af806b4b");
  # https://support.microsoft.com/en-us/help/4475611/security-update-for-office-2013-september-10-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0e38e73e");
  # https://support.microsoft.com/en-us/help/4475583/security-update-for-office-2016-september-10-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?455b89a9");
  # https://support.microsoft.com/en-us/help/4475591/security-update-for-office-2016-september-10-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f4aeff4f");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
  -KB4464566
  -KB4475607
  -KB4475599
  -KB4475611
  -KB4475583
  -KB4475591
For Office 365, Office 2016 C2R, or Office 2019, ensure
automatic updates are enabled or open any office app and
manually perform an update.");

  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:N/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-2019-1297");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("office_installed.nasl", "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');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS19-09';
kbs = make_list(
  '4464566',
  '4475599',
  '4475607',
  '4475611',
  '4475583',
  '4475591'
);

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_vers = hotfix_check_office_version();

# Office 2010 SP2
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';

    path = hotfix_get_officecommonfilesdir(officever:'14.0');
    path = hotfix_append_path(path:path, value:'Microsoft Shared\\Office14');
    kb = "4464566";
    file = "mso.dll";
    version = "14.0.7237.5000";
    if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;

    path = hotfix_get_officecommonfilesdir(officever:'14.0');
    path = hotfix_append_path(path:path, value:'Microsoft Shared\\Office14');
    kb = "4475599";
    file = "acecore.dll";
    version = "14.0.7237.5000";
    if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;
  }
}

# Office 2013 SP1
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';

    path = hotfix_get_officecommonfilesdir(officever:'15.0');
    path = hotfix_append_path(path:path, value:'Microsoft Shared\\Office15');
    kb = '4475611';
    file = "acecore.dll";
    version = "15.0.5172.1000";
    if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER )
      vuln = TRUE;

    path = hotfix_get_officecommonfilesdir(officever:'15.0');
    path = hotfix_append_path(path:path, value:'Microsoft Shared\\Office15');
    kb = '4475607';
    file = "mso.dll";
    version = "15.0.5172.1000";
    if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER )
      vuln = TRUE;
  }
}

# Office 2016
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";
    prod2019 = "Microsoft Office 2019";

    path = hotfix_get_officecommonfilesdir(officever:"16.0");
    acecore_path = hotfix_append_path(path:path, value:"Microsoft Shared\Office16");
    # MSI aceexcl.dll
    if (hotfix_check_fversion(file:"acecore.dll", version:"16.0.4900.1000", channel:"MSI", channel_product:"Office", path:acecore_path, kb:'4475591', bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;

    path = hotfix_get_officecommonfilesdir(officever:"16.0");
    mso_dll_path = hotfix_append_path(path:path, value:"Microsoft Shared\Office16");
    if (hotfix_check_fversion(file:"mso.dll", version:"16.0.4900.1000", channel:"MSI", channel_product:"Office", path:mso_dll_path, kb:'4475583', bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;

    c2r_path = mso_dll_path;

      # C2R (csi path is the same as mso path) 
    if (
      hotfix_check_fversion(file:"mso.dll", version:"16.0.10730.20380", channel:"Deferred", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
      hotfix_check_fversion(file:"mso.dll", version:"16.0.11328.20418", channel:"Deferred", channel_version:"1902", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
      hotfix_check_fversion(file:"mso.dll", version:"16.0.11929.20288", channel:"First Release for Deferred", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
      hotfix_check_fversion(file:"mso.dll", version:"16.0.11929.20288", channel:"Current", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
      # 2019
      hotfix_check_fversion(file:"mso.dll", version:"16.0.11929.20288", channel:"2019 Retail", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod2019) == HCF_OLDER ||
      hotfix_check_fversion(file:"mso.dll", version:"16.0.10350.20019", channel:"2019 Volume", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod2019) == HCF_OLDER
    )
      vuln = TRUE;
  }
}
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');
}
  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS19_SEP_OFFICE_PROJECT.NASL
    descriptionThe Microsoft Project installation on the remote host is missing a security update. It is, therefore, affected by the following vulnerability : - A security feature bypass vulnerability exists when Microsoft Office improperly handles input. An attacker who successfully exploited the vulnerability could execute arbitrary commands. In a file-sharing attack scenario, an attacker could provide a specially crafted document file designed to exploit the vulnerability, and then convince a user to open the document file and interact with the document by clicking a specific cell. The update addresses the vulnerability by correcting how Microsoft Office handles input. (CVE-2019-1264)
    last seen2020-04-18
    modified2019-09-11
    plugin id128686
    published2019-09-11
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/128686
    titleSecurity Updates for Microsoft Project (September 2019)
    code
    #
# (C) Tenable Network Security, Inc.
#

# The descriptive text and package checks in this plugin were  
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.


include("compat.inc");

if (description)
{
  script_id(128686);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/17");

  script_cve_id("CVE-2019-1264");
  script_xref(name:"MSKB", value:"4464548");
  script_xref(name:"MSKB", value:"4475589");
  script_xref(name:"MSKB", value:"4461631");
  script_xref(name:"MSFT", value:"MS19-4464548");
  script_xref(name:"MSFT", value:"MS19-4475589");
  script_xref(name:"MSFT", value:"MS19-4461631");

  script_name(english:"Security Updates for Microsoft Project (September 2019)");
  script_summary(english:"Checks for Microsoft security updates.");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Project installation on the remote host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Project installation on the remote host
is missing a security update. It is, therefore, affected by
the following vulnerability :

  - A security feature bypass vulnerability exists when
    Microsoft Office improperly handles input. An attacker
    who successfully exploited the vulnerability could
    execute arbitrary commands. In a file-sharing attack
    scenario, an attacker could provide a specially crafted
    document file designed to exploit the vulnerability, and
    then convince a user to open the document file and
    interact with the document by clicking a specific cell.
    The update addresses the vulnerability by correcting how
    Microsoft Office handles input. (CVE-2019-1264)");
  # https://support.microsoft.com/en-us/help/4464548/security-update-for-project-2013-september-10-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?438eb6e8");
  # https://support.microsoft.com/en-us/help/4475589/security-update-for-project-2016-september-10-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?65dc9fca");
  # https://support.microsoft.com/en-us/help/4461631/security-update-for-project-2010-september-10-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2f44ae26");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:  
  -KB4464548
  -KB4475589
  -KB4461631");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  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-2019-1264");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:project_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl", "office_installed.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include('audit.inc');
include('smb_func.inc');
include('smb_hotfixes.inc');
include('smb_hotfixes_fcheck.inc');
include('smb_reg_query.inc');
include('install_func.inc');

global_var vuln;

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS19-09';
kbs = make_list(
  '4461631', # 2010
  '4464548', # 2013
  '4475589'  # 2016
);

if (get_kb_item('Host/patch_management_checks'))
  hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_WARNING);

get_kb_item_or_exit('SMB/Registry/Enumerated', exit_code:1);

port = kb_smb_transport();

######################################################################
# project 2010, 2013, 2016
######################################################################
project_checks = make_array(
  "14.0", make_array('sp', 2, 'version', "14.0.7237.5000", 'kb', '4461631'),
  "15.0", make_array('sp', 1, 'version', "15.0.5172.1000", 'kb', '4464548'),
  "16.0", make_nested_list(
    make_array('version', "16.0.4900.1000", 'channel', 'MSI', 'kb', '4475589'),
    # C2R
    make_array("version", "16.0.10730.20380", "channel", "Deferred"),
    make_array("version", "16.0.11328.20420", "channel", "Deferred", "channel_version", "1902"),
    make_array("version", "16.0.11929.20300", "channel", "First Release for Deferred"),
    make_array("version", "16.0.11929.20300", "channel", "Current"),
    # 2019
    make_array("version", "16.0.11929.20300", "channel", "2019 Retail"),
    make_array("version", "16.0.10350.20019", "channel", "2019 Volume")
    )
  );

if (hotfix_check_office_product(product:'Project', checks:project_checks, bulletin:bulletin))
{
  replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_warning();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}

References