Security Updates for Internet Explorer (June 2017)

#
# (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(104892);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/28");

  script_cve_id(
    "CVE-2017-8517",
    "CVE-2017-8519",
    "CVE-2017-8522",
    "CVE-2017-8524",
    "CVE-2017-8547"
  );
  script_bugtraq_id(
    98895,
    98899,
    98926,
    98930,
    98932
  );
  script_xref(name:"MSKB", value:"4022726");
  script_xref(name:"MSKB", value:"4022724");
  script_xref(name:"MSKB", value:"4021558");
  script_xref(name:"MSKB", value:"4022719");
  script_xref(name:"MSFT", value:"MS17-4022726");
  script_xref(name:"MSFT", value:"MS17-4022724");
  script_xref(name:"MSFT", value:"MS17-4021558");
  script_xref(name:"MSFT", value:"MS17-4022719");

  script_name(english:"Security Updates for Internet Explorer (June 2017)");
  script_summary(english:"Checks for Microsoft security updates.");

  script_set_attribute(attribute:"synopsis", value:
"The Internet Explorer installation on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Internet Explorer installation on the remote host is
missing security updates. It is, therefore, affected by
multiple vulnerabilities :

  - A remote code execution vulnerability exists when
    Internet Explorer improperly accesses objects in memory.
    This vulnerability could corrupt memory in such a way
    that an attacker could execute arbitrary code in the
    context of the current user.  (CVE-2017-8519,
    CVE-2017-8547)

  - A remote code execution vulnerability exists in the way
    JavaScript engines render when handling objects in
    memory in Microsoft browsers. The vulnerability could
    corrupt memory in such a way that an attacker could
    execute arbitrary code in the context of the current
    user. An attacker who successfully exploited the
    vulnerability could gain the same user rights as the
    current user.  (CVE-2017-8517, CVE-2017-8522,
    CVE-2017-8524)");
  # https://support.microsoft.com/en-us/help/4022726/windows-8-update-kb4022726
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5f83ad76");
  # https://support.microsoft.com/en-us/help/4022724/windows-server-update-kb4022724
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4a3cabfc");
  # https://support.microsoft.com/en-us/help/4021558/cumulative-security-update-for-internet-explorer-june-13-2017
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f2d033c7");
  # https://support.microsoft.com/en-us/help/4022719/windows-7-update-kb4022719
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?43db6287");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released security updates for the affected versions of Internet Explorer.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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:H/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-2017-8517");
  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:"2017/06/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/30");

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

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");
  script_copyright(english:"This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_dependencies("smb_check_rollup.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("global_settings.inc");
include("audit.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
include("smb_reg_query.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS17-06';
kbs = make_list(
  '4022726',
  '4022724',
  '4021558',
  '4022719'
);

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");
os = get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);

if (hotfix_check_sp_range(vista:'2', win7:'1', win8:'0',  win81:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 8" >< productname && "8.1" >!< productname)
 audit(AUDIT_OS_SP_NOT_VULN);
if ("Vista" >< productname) audit(AUDIT_OS_SP_NOT_VULN);

if (hotfix_check_server_core() == 1) audit(AUDIT_WIN_SERVER_CORE);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

hotfix_vuln = FALSE;

if (
  # Windows 8.1 / Windows Server 2012 R2
  # Internet Explorer 11
  hotfix_is_vulnerable(os:"6.3", sp:0, file:"mshtml.dll", version:"11.0.9600.18698", min_version:"11.0.9600.16000", dir:"\system32", bulletin:bulletin, kb:"4021558") ||

  # Windows Server 2012
  # Internet Explorer 10
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"mshtml.dll", version:"10.0.9200.22168", min_version:"10.0.9200.16000", dir:"\system32", bulletin:bulletin, kb:"4021558") ||

  # Windows 7 / Server 2008 R2
  # Internet Explorer 8/9/10/11
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"11.0.9600.18698", min_version:"11.0.9600.16000", dir:"\system32", bulletin:bulletin, kb:"4021558") ||

  # Vista / Windows Server 2008
  # Internet Explorer 9
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"9.0.8112.21017", min_version:"9.0.8112.20000", dir:"\system32", bulletin:bulletin, kb:"4021558") ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"9.0.8112.16906", min_version:"9.0.8112.16000", dir:"\system32", bulletin:bulletin, kb:"4021558")
)
  hotfix_vuln = TRUE;

if(hotfix_vuln)
{
  report =  '\nNote: The fix for this issue is available in either of the following updates:\n';
  report += '  - KB4021558 : Cumulative Security Update for Internet Explorer\n';
  if(os == "6.3")
  {
    report += '  - KB4022726 : Windows 8.1 / Server 2012 R2 Monthly Rollup\n';
    hotfix_add_report(bulletin:'MS17-06', kb:'4022726', report);
  }
  else if(os == "6.2")
  {
    report += '  - KB4022724 : Windows Server 2012 Monthly Rollup\n';
    hotfix_add_report(bulletin:'MS17-06', kb:'4022724', report);
  }
  else if(os == "6.1")
  {
    report += '  - KB4022719 : Windows 7 / Server 2008 R2 Monthly Rollup\n';
    hotfix_add_report(bulletin:'MS17-06', kb:'4022719', report);
  }
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, hotfix_get_audit_report());
}