Vulnerabilities > CVE-2018-0796 - Unspecified vulnerability in Microsoft products

047910
CVSS 9.3 - CRITICAL
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
microsoft
critical
nessus
NVD
Published: 2018-01-10
Updated: 2020-08-24

Summary

Microsoft Excel in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allows a remote code execution vulnerability due to the way objects are handled in memory, aka "Microsoft Excel Remote Code Execution Vulnerability".

Vulnerable Configurations

Part Description Count
Application
Microsoft
8

Nessus

  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS18_JAN_EXCEL.NASL
    descriptionThe Microsoft Excel Products are missing a security update. It is, therefore, affected by the following vulnerability : - A remote code execution vulnerability exists in Microsoft Office 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-2018-0796)
    last seen2020-06-01
    modified2020-06-02
    plugin id105694
    published2018-01-09
    reporterThis script is Copyright (C) 2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/105694
    titleSecurity Updates for Microsoft Excel Products (January 2018)
    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(105694);
  script_version("1.6");
  script_cvs_date("Date: 2018/07/30 15:31:34");

  script_cve_id("CVE-2018-0796");
  script_bugtraq_id(102372);

  script_xref(name:"MSKB", value:"4011602");
  script_xref(name:"MSKB", value:"4011627");
  script_xref(name:"MSKB", value:"4011639");
  script_xref(name:"MSKB", value:"4011660");
  script_xref(name:"MSFT", value:"MS17-4011602");
  script_xref(name:"MSFT", value:"MS17-4011627");
  script_xref(name:"MSFT", value:"MS17-4011639");
  script_xref(name:"MSFT", value:"MS17-4011660");
  script_xref(name:"IAVA", value:"2018-A-0009");

  script_name(english:"Security Updates for Microsoft Excel Products (January 2018)");
  script_summary(english:"Checks for Microsoft security updates.");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Excel Products are affected by a remote code
execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Excel Products are missing a security update.
It is, therefore, affected by the following vulnerability :

  - A remote code execution vulnerability exists in
    Microsoft Office 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-2018-0796)");
  # https://support.microsoft.com/en-us/help/4011602/descriptionofthesecurityupdateforexcel2007january9-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?01001d0d");
  # https://support.microsoft.com/en-us/help/4011660/descriptionofthesecurityupdateforexcel2010january9-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a5dd4608");
  # https://support.microsoft.com/en-us/help/4011639/descriptionofthesecurityupdateforexcel2013january9-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?06c16d3c");
  # https://support.microsoft.com/en-us/help/4011627/descriptionofthesecurityupdateforexcel2016january9-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c624d784");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
  -KB4011602
  -KB4011627
  -KB4011639
  -KB4011660");
  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:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/01/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/09");

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

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");
  script_copyright(english:"This script is Copyright (C) 2018 Tenable Network Security, Inc.");
  script_dependencies(
    "office_installed.nasl",
    "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 = "MS18-01";
kbs = make_list(
  '4011602', # Excel 2007 SP3
#  '4011627', # Excel 2016
  '4011639', # Excel 2013 SP1
  '4011660'  # Excel 2010 SP2
);

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();


######################################################################
# Excel 2007, 2010, 2013, 2016
######################################################################
kb16 = "4011627";
excel_checks = make_array(
  "12.0", make_array("sp", 3, "version", "12.0.6784.5000", "kb", "4011602"),
  "14.0", make_array("sp", 2, "version", "14.0.7192.5000", "kb", "4011660"),
  "15.0", make_array("sp", 1, "version", "15.0.4997.1000", "kb", "4011639"),
  "16.0", make_nested_list(
    make_array("sp", 0, "version", "16.0.4639.1000", "channel", "MSI", "kb", kb16),
    make_array("sp", 0, "version", "16.0.8201.2217", "channel", "Deferred", "kb", kb16),
    make_array("sp", 0, "version", "16.0.8431.2153", "channel", "Deferred", "channel_version", "1708", "kb", kb16),
    make_array("sp", 0, "version", "16.0.8431.2153", "channel", "First Release for Deferred", "kb", kb16),
    make_array("sp", 0, "version", "16.0.8730.2175", "channel", "Current", "kb", kb16)
  )
);
if (hotfix_check_office_product(product:"Excel", checks:excel_checks, bulletin:bulletin))
  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_MS18_JAN_OFFICE_VIEWERS.NASL
    descriptionThe Microsoft Office Products are missing security updates. It is, therefore, affected by multiple vulnerabilities : - A remote code execution vulnerability exists in Microsoft Office 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-2018-0796) - An Office RTF remote code execution vulnerability exists in Microsoft Office software when the Office software fails to properly handle RTF files. 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-2018-0797)
    last seen2020-06-01
    modified2020-06-02
    plugin id105697
    published2018-01-09
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/105697
    titleSecurity Updates for Microsoft Office Viewer Products (January 2018)
    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(105697);
  script_version("1.8");
  script_cvs_date("Date: 2019/11/08");

  script_cve_id("CVE-2018-0796", "CVE-2018-0797");
  script_bugtraq_id(102372, 102406);
  script_xref(name:"MSKB", value:"4011606");
  script_xref(name:"MSKB", value:"4011641");
  script_xref(name:"MSFT", value:"MS18-4011606");
  script_xref(name:"MSFT", value:"MS18-4011641");
  script_xref(name:"IAVA", value:"2018-A-0009");

  script_name(english:"Security Updates for Microsoft Office Viewer Products (January 2018)");
  script_summary(english:"Checks for Microsoft security updates.");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Office Viewer 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 in
    Microsoft Office 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-2018-0796)

  - An Office RTF remote code execution vulnerability
    exists in Microsoft Office software when the Office
    software fails to properly handle RTF files. 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-2018-0797)");
  # https://support.microsoft.com/en-us/help/4011606/descriptionofthesecurityupdateforexcelviewer2007january9-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7bc74327");
  # https://support.microsoft.com/en-us/help/4011641/descriptionofthesecurityupdateforwordviewerjanuary9-2018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?de96d39f");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:  
  -KB4011606
  -KB4011641");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-0797");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/01/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel_viewer");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2018-2019 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");

global_var vuln;

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS18-01";
kbs = make_list(
  '4011606', # Excel Viewer 2007 SP3
  '4011641'  # 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();

######################################################################
# Excel Viewer
######################################################################
function perform_excel_viewer_checks()
{
  var excel_vwr_checks = make_array(
    "12.0", make_array("version", "12.0.6784.5000", "kb", "4011606")
  );
  if (hotfix_check_office_product(product:"ExcelViewer", display_name:"Excel Viewer", checks:excel_vwr_checks, bulletin:bulletin))
    vuln = TRUE;
}

######################################################################
# Word Viewer
######################################################################
function perform_word_viewer_checks()
{
  var word_vwr_checks = make_array(
    "11.0", make_array("version", "11.0.8446.0", "kb", "4011641")
  );
  if (hotfix_check_office_product(product:"WordViewer", display_name:"Word Viewer", checks:word_vwr_checks, bulletin:bulletin))
    vuln = TRUE;
}


######################################################################
# MAIN
######################################################################
perform_excel_viewer_checks();
perform_word_viewer_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');
}
  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS18_JAN_OFFICE_COMPATIBILITY.NASL
    descriptionThe Microsoft Office Compatibility Pack products installed on the remote host are missing security updates. It is, therefore, affected by multiple vulnerabilities : - A remote code execution vulnerability exists in Microsoft Office 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. (CVE-2018-0793, CVE-2018-0794, CVE-2018-0796, CVE-2018-0798, CVE-2018-0801, CVE-2018-0802, CVE-2018-0804, CVE-2018-0805, CVE-2018-0806, CVE-2018-0807, CVE-2018-0812) - An Office RTF remote code execution vulnerability exists in Microsoft Office software when the Office software fails to properly handle RTF files. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. (CVE-2018-0797)
    last seen2020-06-01
    modified2020-06-02
    plugin id105695
    published2018-01-09
    reporterThis script is Copyright (C) 2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/105695
    titleSecurity Updates for Microsoft Office Compatibility SP3 (January 2018)
    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(105695);
  script_version("1.9");
  script_cvs_date("Date: 2018/11/15 20:50:32");

  script_cve_id(
    "CVE-2018-0793",
    "CVE-2018-0794",
    "CVE-2018-0796",
    "CVE-2018-0797",
    "CVE-2018-0798",
    "CVE-2018-0801",
    "CVE-2018-0802",
    "CVE-2018-0804",
    "CVE-2018-0805",
    "CVE-2018-0806",
    "CVE-2018-0807",
    "CVE-2018-0812",
    "CVE-2018-0845",
    "CVE-2018-0848",
    "CVE-2018-0849",
    "CVE-2018-0862"
  );
  script_bugtraq_id(
    102347,
    102348,
    102370,
    102372,
    102373,
    102375,
    102406,
    102457,
    102459,
    102460,
    102461,
    102463
  );

  script_xref(name:"MSKB", value:"4011605");
  script_xref(name:"MSKB", value:"4011607");
  script_xref(name:"MSFT", value:"MS18-4011605");
  script_xref(name:"MSFT", value:"MS18-4011607");
  script_xref(name:"IAVA", value:"2018-A-0009");

  script_name(english:"Security Updates for Microsoft Office Compatibility SP3 (January 2018)");
  script_summary(english:"Checks for Microsoft security updates.");

  script_set_attribute(attribute:"synopsis", value:
   "The Microsoft Office Products are affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Office Compatibility Pack products installed
on the remote host are missing security updates.
It is, therefore, affected by multiple vulnerabilities :

- A remote code execution vulnerability exists in
  Microsoft Office 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.
  (CVE-2018-0793, CVE-2018-0794, CVE-2018-0796, 
  CVE-2018-0798, CVE-2018-0801, CVE-2018-0802, 
  CVE-2018-0804, CVE-2018-0805, CVE-2018-0806, 
  CVE-2018-0807, CVE-2018-0812)

- An Office RTF remote code execution vulnerability 
  exists in Microsoft Office software when the Office 
  software fails to properly handle RTF files. An 
  attacker who successfully exploited the vulnerability 
  could run arbitrary code in the context of the current 
  user. (CVE-2018-0797)");

  # https://support.microsoft.com/en-us/help/4011605/descriptionofthesecurityupdateformicrosoftofficecompatibilitypackservi
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d320dbde");
  # https://support.microsoft.com/en-us/help/4011607/description-of-the-security-update-for-microsoft-office-compatibility
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7b248e04");
  script_set_attribute(attribute:"solution", value:
    "Microsoft has released the following security updates to address this issue:
    -KB4011605
    -KB4011607"
  );
  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:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/01/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/09");

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

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

  script_copyright(english:"This script is Copyright (C) 2018 Tenable Network Security, Inc.");

  script_dependencies("office_installed.nasl","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("misc_func.inc");
include("audit.inc");
include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS18-01";
kbs = make_list(
  '4011605',
  '4011607'
);

vuln = FALSE;

if (get_kb_item("Host/patch_management_checks"))
  hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

######################################################################
 # Excel Compatibility pack
######################################################################
excel_compat_check = make_array(
    "12.0", make_array("version", "12.0.6784.5000", "kb", "4011605")
);

if (hotfix_check_office_product(product:"ExcelCnv",
                                display_name:"Office Compatibility Pack SP3",
                                checks:excel_compat_check,
                                bulletin:bulletin))
  vuln = TRUE;

####################################################################
#  Office 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:"12.0.6784.5000", kb:"4011607", min_version:"12.0.0.0", product:"Microsoft Office Compatibility Pack") == HCF_OLDER)
  {
    vuln = TRUE;
    break;
  }
}

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