MS16-140: Security Update for Boot Manager (3193479)

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(94641);
  script_version("1.10");
  script_cvs_date("Date: 2019/11/14");

  script_cve_id("CVE-2016-7247");
  script_bugtraq_id(94058);
  script_xref(name:"MSFT", value:"MS16-140");
  script_xref(name:"MSKB", value:"3197873");
  script_xref(name:"MSKB", value:"3197874");
  script_xref(name:"MSKB", value:"3197876");
  script_xref(name:"MSKB", value:"3197877");
  script_xref(name:"MSKB", value:"3198585");
  script_xref(name:"MSKB", value:"3198586");
  script_xref(name:"MSKB", value:"3200970");
  script_xref(name:"IAVB", value:"2016-B-0162");

  script_name(english:"MS16-140: Security Update for Boot Manager (3193479)");
  script_summary(english:"Checks for the November 2016 Rollup.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a security bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing a security update. It is,
therefore, affected a security bypass vulnerability in Windows Secure
Boot due to the use of an insecure boot policy in firmware. A local
attacker can exploit this issue to disable code integrity checks,
allowing test-signed executables and drivers to be loaded onto a
target device.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-140");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows 2012, 8.1, RT 8.1,
2012 R2, 10, and 2016.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  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:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-7247");

  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:"2016/11/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/11/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/11/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  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) 2016-2019 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("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 = 'MS16-140';
kbs = make_list(
  '3197873', # 8.1 / 2012 R2
  '3197874', # 8.1 / 2012 R2
  '3197876', # 2012
  '3197877', # 2012
  '3198585', # 10
  '3198586', # 10 Version 1511
  '3200970'  # 10 Version 1607
);

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

if (hotfix_check_sp_range(win8:'0', win81:'0', win10:'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);

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

if (
  # Windows Server 2012
  smb_check_rollup(os:"6.2", sp:0, rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3197876, 3197877)) ||
  # Windows 8.1 / Windows Server 2012 R2
  smb_check_rollup(os:"6.3", sp:0, rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3197873, 3197874)) ||
  # Windows 10
  smb_check_rollup(os:"10", sp:0, os_build:"10240", rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3198585)) ||
  smb_check_rollup(os:"10", sp:0, os_build:"10586", rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3198586)) ||
  smb_check_rollup(os:"10", sp:0, os_build:"14393", rollup_date:"11_2016", bulletin:bulletin, rollup_kb_list:make_list(3200970))
)
{
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_warning();
  hotfix_check_fversion_end();
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, hotfix_get_audit_report());
}