MS16-112: Security Update for Windows Lock Screen (3178469)

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

include("compat.inc");

if (description)
{
  script_id(93471);
  script_version("1.10");
  script_cvs_date("Date: 2019/11/14");

  script_cve_id("CVE-2016-3302");
  script_bugtraq_id(92853);
  script_xref(name:"MSFT", value:"MS16-112");
  script_xref(name:"MSKB", value:"3178469");
  script_xref(name:"MSKB", value:"3185614");
  script_xref(name:"MSKB", value:"3185611");
  script_xref(name:"MSKB", value:"3189866");
  script_xref(name:"IAVA", value:"2016-A-0249");

  script_name(english:"MS16-112: Security Update for Windows Lock Screen (3178469)");
  script_summary(english:"Checks the version of pnidui.dll.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by an elevation of privilege
vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing a security update. It is,
therefore, affected by an elevation of privilege vulnerability due to
improperly allowing web content to load from the Windows lock screen.
A local attacker can exploit this, by connecting to a maliciously
configured WiFi hotspot or by inserting a mobile broadband adapter, to
elevate privileges and execute arbitrary code.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-112");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows 8.1, RT 8.1, 2012
R2, and 10.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:P/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-2016-3302");

  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:"2016/09/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/09/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/09/13");

  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_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("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS16-112';
kbs = make_list('3178469','3185614','3185611','3189866');

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 8.1 / Server 2012 R2
  hotfix_is_vulnerable(os:"6.3", sp:0, file:"pnidui.dll", version:"6.3.9600.18434", min_version:"6.3.9600.16000", dir:"\system32", bulletin:bulletin, kb:"3178539")  ||
  # Windows 10
  hotfix_is_vulnerable(os:"10", sp:0, file:"pnidui.dll", version:"10.0.10586.589", os_build:"10586", dir:"\system32", bulletin:bulletin, kb:"3185614") ||
  hotfix_is_vulnerable(os:"10", sp:0, file:"pnidui.dll", version:"10.0.10240.17113", os_build:"10240", dir:"\system32", bulletin:bulletin, kb:"3185611") ||
  hotfix_is_vulnerable(os:"10", sp:0, file:"pnidui.dll", version:"10.0.14393.187", os_build:"14393", dir:"\system32", bulletin:bulletin, kb:"3189866")
)
{
  set_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');
}