Vulnerabilities > CVE-2019-1448 - Unspecified vulnerability in Microsoft Excel, Office and Office 365 Proplus

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

Summary

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory, aka 'Microsoft Excel Remote Code Execution Vulnerability'.

Nessus

  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS19_NOV_EXCEL.NASL
    descriptionThe Microsoft Excel Products are missing security updates. It is, therefore, affected by multiple vulnerabilities : - 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-2019-1448) - 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-2019-1446)
    last seen2020-06-01
    modified2020-06-02
    plugin id130911
    published2019-11-12
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130911
    titleSecurity Updates for Microsoft Excel Products (November 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(130911);
      script_version("1.8");
      script_cvs_date("Date: 2020/01/30");
    
      script_cve_id("CVE-2019-1446", "CVE-2019-1448");
      script_xref(name:"MSKB", value:"4484164");
      script_xref(name:"MSKB", value:"4484158");
      script_xref(name:"MSKB", value:"4484144");
      script_xref(name:"MSFT", value:"MS19-4484164");
      script_xref(name:"MSFT", value:"MS19-4484158");
      script_xref(name:"MSFT", value:"MS19-4484144");
    
      script_name(english:"Security Updates for Microsoft Excel Products (November 2019)");
    
      script_set_attribute(attribute:"synopsis", value:
    "The Microsoft Excel Products are affected by multiple vulnerabilities.");
      script_set_attribute(attribute:"description", value:
    "The Microsoft Excel Products are missing security updates.
    It is, therefore, affected by multiple vulnerabilities :
    
      - 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-2019-1448)
    
      - 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-2019-1446)");
      # https://support.microsoft.com/en-us/help/4484164/security-update-for-excel-2010-november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?56f45906");
      # https://support.microsoft.com/en-us/help/4484158/security-update-for-excel-2013-november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?69e34899");
      # https://support.microsoft.com/en-us/help/4484144/security-update-for-excel-2016-november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c685400e");
      script_set_attribute(attribute:"solution", value:
    "Microsoft has released the following security updates to address this issue:  
      -KB4484164
      -KB4484158
      -KB4484144
    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: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-2019-1448");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2019/11/12");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/11/12");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/12");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel");
      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", "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('install_func.inc');
    
    global_var vuln;
    
    get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');
    
    bulletin = 'MS19-11';
    kbs = make_list(
    '4484164',
    '4484158',
    '4484144'
    );
    
    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);
    
    port = kb_smb_transport();
    
    checks = make_array(
      '14.0', make_array('sp', 2, 'version', '14.0.7241.5000', 'kb', '4484164'),
      '15.0', make_array('sp', 1, 'version', '15.0.5189.1000', 'kb', '4484158'),
      '16.0', make_nested_list(make_array('sp', 0, 'version', '16.0.4927.1000', 'channel', 'MSI', 'kb', '4484144'),
        # C2R
         make_array("version", "16.0.10730.20416", "channel", "Deferred"),
         make_array("version", "16.0.11328.20468", "channel", "Deferred", "channel_version", "1902"),
         make_array("version", "16.0.11929.20436", "channel", "First Release for Deferred"),
         make_array("version", "16.0.12130.20344", "channel", "Current"),
        # 2019
         make_array("version", "16.0.12130.20344", "channel", "2019 Retail"),
         make_array("version", "16.0.10352.20042", "channel", "2019 Volume")
      	)
    );
    
    if (hotfix_check_office_product(product:'Excel', checks:checks, bulletin:bulletin))
    {
      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_NOV_OFFICE.NASL
    descriptionThe Microsoft Office Products are missing security updates. It is, therefore, affected by multiple vulnerabilities : - An information disclosure vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2019-1402) - 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-2019-1448) - A security feature bypass vulnerability exists in the way that Office Click-to-Run (C2R) components handle a specially crafted file, which could lead to a standard user, any AppContainer sandbox, and Office LPAC Protected View to escalate privileges to SYSTEM. (CVE-2019-1449) - 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-2019-1446)
    last seen2020-06-01
    modified2020-06-02
    plugin id130913
    published2019-11-12
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130913
    titleSecurity Updates for Microsoft Office Products (November 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(130913);
      script_version("1.8");
      script_cvs_date("Date: 2020/01/30");
    
      script_cve_id(
        "CVE-2019-1402",
        "CVE-2019-1446",
        "CVE-2019-1448",
        "CVE-2019-1449"
      );
      script_xref(name:"MSKB", value:"4484152");
      script_xref(name:"MSKB", value:"4484160");
      script_xref(name:"MSKB", value:"4484148");
      script_xref(name:"MSKB", value:"4484127");
      script_xref(name:"MSKB", value:"4484113");
      script_xref(name:"MSKB", value:"4484119");
      script_xref(name:"MSFT", value:"MS19-4484152");
      script_xref(name:"MSFT", value:"MS19-4484160");
      script_xref(name:"MSFT", value:"MS19-4484148");
      script_xref(name:"MSFT", value:"MS19-4484127");
      script_xref(name:"MSFT", value:"MS19-4484113");
      script_xref(name:"MSFT", value:"MS19-4484119");
    
      script_name(english:"Security Updates for Microsoft Office Products (November 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 :
    
      - An information disclosure vulnerability exists in
        Microsoft Office software when the software fails to
        properly handle objects in memory. An attacker who
        successfully exploited this vulnerability could obtain
        information to further compromise the users system.
        (CVE-2019-1402)
    
      - 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-2019-1448)
    
      - A security feature bypass vulnerability exists in the
        way that Office Click-to-Run (C2R) components handle a
        specially crafted file, which could lead to a standard
        user, any AppContainer sandbox, and Office LPAC
        Protected View to escalate privileges to SYSTEM.
        (CVE-2019-1449)
    
      - 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-2019-1446)");
      # https://support.microsoft.com/en-us/help/4484152/security-update-for-office-2013-november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7899bb59");
      # https://support.microsoft.com/en-us/help/4484160/security-update-for-office-2010-november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9ea2af0a");
      # https://support.microsoft.com/en-us/help/4484148/security-update-for-office-2016-november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f2f9db6d");
      # https://support.microsoft.com/en-us/help/4484127/security-update-for-office-2010-november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cd218f71");
      # https://support.microsoft.com/en-us/help/4484113/security-update-for-office-2016-november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3ff227fc");
      # https://support.microsoft.com/en-us/help/4484119/security-update-for-office-2013-november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?99349609");
      # https://docs.microsoft.com/en-us/officeupdates/update-history-office365-proplus-by-date
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c6fc9b1b");
      # https://docs.microsoft.com/en-us/officeupdates/update-history-office-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?42ab6861");
      # https://support.office.com/en-us/article/install-office-updates-2ab296f3-7f03-43a2-8e50-46de917611c5
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7b126882");
      script_set_attribute(attribute:"solution", value:
    "Microsoft has released the following security updates to address this issue:  
      -KB4484152
      -KB4484160
      -KB4484148
      -KB4484127
      -KB4484113
      -KB4484119
    
    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:L/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:N/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-2019-1449");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2019/11/12");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/11/12");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/12");
    
      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 = "MS19-11";
    kbs = make_list(
      "4484127", # Office 2010 SP2
      "4484160", # Office 2010 SP2
      "4484152", # Office 2013 SP1
      "4484119", # Office 2013 SP1
      "4484148", # Office 2016
      "4484113"  # Office 2016
    );
    
    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_officeprogramfilesdir(officever:"14.0");
        path = hotfix_append_path(path:path, value:"Microsoft Office\Office14");
        kb = "4484160";
        file = "graph.exe";
        version = "14.0.7241.5000";
        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 = "4484127";
        file = "acecore.dll";
        version = "14.0.7241.5000";
        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_officeprogramfilesdir(officever:"15.0");
        path = hotfix_append_path(path:path, value:"Microsoft Office\Office15");
        kb = "4484152";
        file = "graph.exe";
        version = "15.0.5189.1000";
        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 = "4484119";
        file = "acecore.dll";
        version = "15.0.5189.1000";
        if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER )
          vuln = TRUE;
      }
    }
    
    # Office 2016 / 2019 / C2R
    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";
    
        # MSI graph.exe
        path = hotfix_get_officeprogramfilesdir(officever:"16.0");
        path = hotfix_append_path(path:path, value:"Microsoft Office\Office16");
        kb = "4484148";
        file = "graph.exe";
        version = "16.0.4927.1000";
        if (hotfix_check_fversion(file:file, version:version, channel:"MSI", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER)
          vuln = TRUE;
    
        # MSI acecore.dll
        path = hotfix_get_officecommonfilesdir(officever:"16.0");
        path = hotfix_append_path(path:path, value:"Microsoft Shared\Office16");
        kb = "4484113";
        file = "acecore.dll";
        version = "16.0.4927.1000";
        if (hotfix_check_fversion(file:file, version:version, channel:"MSI", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER)
          vuln = TRUE;
    
        path = hotfix_get_officecommonfilesdir(officever:'16.0');
        prod2019 = 'Microsoft Office 2019';
        mso_dll_path = hotfix_append_path(path:path, value:'Microsoft Shared\\Office16');
        c2r_path = mso_dll_path;
        if (
          hotfix_check_fversion(file:"mso.dll", version:"16.0.10730.20416", channel:"Deferred", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
          hotfix_check_fversion(file:"mso.dll", version:"16.0.11328.20468", channel:"Deferred", channel_version:"1902", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
          hotfix_check_fversion(file:"mso.dll", version:"16.0.11929.20426", channel:"First Release for Deferred", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
          hotfix_check_fversion(file:"mso.dll", version:"16.0.12130.20334", channel:"Current", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
          # 2019
          hotfix_check_fversion(file:"mso.dll", version:"16.0.12130.20334", channel:"2019 Retail", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod2019) == HCF_OLDER ||
          hotfix_check_fversion(file:"mso.dll", version:"16.0.10352.20042", 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 familyMacOS X Local Security Checks
    NASL idMACOS_MS19_NOV_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 when Microsoft Excel improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the user’s computer or data. To exploit the vulnerability, an attacker could craft a special document file and then convince the user to open it. An attacker must know the memory address location where the object was created. (CVE-2019-1446) - 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 would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file. (CVE-2019-1448) - A security feature bypass vulnerability exists in Microsoft Office software by not enforcing macro settings on an Excel document. The security feature bypass by itself does not allow arbitrary code execution. To successfully exploit the vulnerability, an attacker would have to embed a control in an Excel worksheet that specifies a macro should be run. To exploit the vulnerability, an attacker would have to convince a user to open a specially crafted file with an affected version of Microsoft Office software. (CVE-2019-1457)
    last seen2020-06-01
    modified2020-06-02
    plugin id130968
    published2019-11-13
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130968
    titleSecurity Updates for Microsoft Office Products (November 2019) (macOS)
    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(130968);
      script_version("1.5");
      script_cvs_date("Date: 2019/12/13");
    
      script_cve_id("CVE-2019-1446", "CVE-2019-1448", "CVE-2019-1457");
    
      script_name(english:"Security Updates for Microsoft Office Products (November 2019) (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 when Microsoft Excel improperly discloses the contents of
        its memory. An attacker who exploited the vulnerability could use the information to compromise the user’s
        computer or data. To exploit the vulnerability, an attacker could craft a special document file and then
        convince the user to open it. An attacker must know the memory address location where the object was
        created. (CVE-2019-1446)
    
      - 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 would have to convince
        users to click a link, typically by way of an enticement in an email or instant message, and then convince
        them to open the specially crafted file. (CVE-2019-1448)
    
      - A security feature bypass vulnerability exists in Microsoft Office software by not enforcing macro
        settings on an Excel document. The security feature bypass by itself does not allow arbitrary code
        execution. To successfully exploit the vulnerability, an attacker would have to embed a control in an
        Excel worksheet that specifies a macro should be run. To exploit the vulnerability, an attacker would have
        to convince a user to open a specially crafted file with an affected version of Microsoft Office software.
        (CVE-2019-1457)");
      # https://docs.microsoft.com/en-gb/officeupdates/update-history-office-for-mac#november-12-2019
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d2855635");
      # https://docs.microsoft.com/en-gb/officeupdates/release-notes-office-for-mac#november-12-2019-release
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?61531b21");
      # https://docs.microsoft.com/en-us/officeupdates/release-notes-office-2016-mac#november-2019-release
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?677ef24b");
      script_set_attribute(attribute:"solution", value:
    "Microsoft has released a set of patches for Microsoft Office 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: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-2019-1448");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2019/11/12");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/11/12");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/13");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
      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:word");
      script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint");
      script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:outlook");
      script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:onenote");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"MacOS X Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 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/Microsoft Word", "installed_sw/Microsoft Excel", "installed_sw/Microsoft PowerPoint", "installed_sw/Microsoft OneNote", "installed_sw/Microsoft Outlook");
    
      exit(0);
    }
    include("audit.inc");
    include("global_settings.inc");
    include("misc_func.inc");
    include("install_func.inc");
    include("vcf.inc");
    
    os = get_kb_item_or_exit("Host/MacOSX/Version");
    apps = make_list(
      'Microsoft Word',
      'Microsoft Excel',
      'Microsoft PowerPoint',
      'Microsoft OneNote',
      'Microsoft Outlook'
    );
    report = '';
    
    #2016
    min_ver_16 = '16';
    fix_ver_16 = '16.16.16';
    fix_disp_16 = '16.16.16 (19111100)';
    
    #2019
    min_ver_19 = '16.17.0';
    fix_ver_19 = '16.31';
    fix_disp_19 = '16.31 (19111002)';
    
    foreach app (apps)
    {
      installs = get_installs(app_name:app);
      if (isnull(installs[1]))
        continue;
    
      foreach install (installs[1])
      {
        version = install['version'];
    
        if (ver_compare(ver:version, minver:min_ver_19, fix:fix_ver_19, strict:FALSE) < 0)
        {
          app_label = app + ' for Mac 2019';
          report +=
            '\n\n  Product           : ' + app_label +
            '\n  Installed version : ' + version +
            '\n  Fixed version     : ' + fix_disp_19;
        }
        else if (ver_compare(ver:version, minver:min_ver_16, fix:fix_ver_16, strict:FALSE) < 0)
        {
          app_label = app + ' for Mac 2016';
          report +=
            '\n\n  Product           : ' + app_label +
            '\n  Installed version : ' + version +
            '\n  Fixed version     : ' + fix_disp_16;
        }
      }
    }
    if (empty(report))
      audit(AUDIT_HOST_NOT, "affected");
    
    if (os =~ "^Mac OS X 10\.[0-9](\.|$)")
      report += '\n  Note              : Update will require Mac OS X 10.10.0 or later.\n';
    
    security_report_v4(severity:SECURITY_HOLE, port:0, extra:report);
    

Talos

idTALOS-2019-0886
last seen2019-11-17
published2019-11-12
reporterTalos Intelligence
sourcehttp://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0886
titleMicrosoft Office Excel WorksheetOptions Code Execution Vulnerability