MS16-008: Security Update for Windows Kernel to Address Elevation of Privilege (3124605)

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

include("compat.inc");

if (description)
{
  script_id(87881);
  script_version("1.14");
  script_cvs_date("Date: 2019/11/22");

  script_cve_id("CVE-2016-0006", "CVE-2016-0007");
  script_bugtraq_id(79882, 79898);
  script_xref(name:"MSFT", value:"MS16-008");
  script_xref(name:"MSKB", value:"3121212");
  script_xref(name:"MSKB", value:"3124263");
  script_xref(name:"MSKB", value:"3124266");

  script_name(english:"MS16-008: Security Update for Windows Kernel to Address Elevation of Privilege (3124605)");
  script_summary(english:"Checks the version of ntoskrnl.exe.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing a security update. It is,
therefore, affected by multiple elevation of privilege vulnerabilities
due to improper validation of reparse points that have been set by
sandbox applications. A local attacker can exploit these
vulnerabilities, via a crafted application, to gain elevated
privileges and take complete control of the affected system.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-008");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, 7,
2008 R2, 8, RT, 2012, 8.1, RT 8.1, 2012 R2, and 10.

Note that Windows 10 with Citrix XenDesktop installed will not be
offered the patch due to an issue with the XenDesktop software that
prevents users from logging on when the patch is applied. To apply the
patch you must first uninstall XenDesktop or contact Citrix for help
with the issue.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/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:"cvss_score_source", value:"CVE-2016-0007");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/01/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/01/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/01/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  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 = 'MS16-008';
kbs = make_list('3121212', '3124263', '3124266');

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(vista:'2', win7:'1', win8:'0', win81:'0', win10:'0') <= 0) 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 (
  # 8.1 / 2012 R2
  hotfix_is_vulnerable(os:"6.3", sp:0, file:"ntoskrnl.exe", version:"6.3.9600.18185", min_version:"6.3.9600.16000", dir:"\system32", bulletin:bulletin, kb:"3121212")  ||
  # 8 / 2012
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"ntoskrnl.exe", version:"6.2.9200.21736", min_version:"6.2.9200.20000", dir:"\system32", bulletin:bulletin, kb:"3121212") ||
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"ntoskrnl.exe", version:"6.2.9200.17617", min_version:"6.2.9200.16000", dir:"\system32", bulletin:bulletin, kb:"3121212") ||
  # 7 / 2008 R2
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"ntoskrnl.exe", version:"6.1.7601.23313", min_version:"6.1.7601.22000", dir:"\system32", bulletin:bulletin, kb:"3121212") ||
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"ntoskrnl.exe", version:"6.1.7601.19110", min_version:"6.1.7600.16000", dir:"\system32", bulletin:bulletin, kb:"3121212") ||
  # Vista / 2008
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"ntoskrnl.exe", version:"6.0.6002.23883", min_version:"6.0.6002.23000", dir:"\system32", bulletin:bulletin, kb:"3121212") ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"ntoskrnl.exe", version:"6.0.6002.19573", min_version:"6.0.6001.18000", dir:"\system32", bulletin:bulletin, kb:"3121212") ||
  # 10
  hotfix_is_vulnerable(os:"10", sp:0, file:"ntoskrnl.exe", version:"10.0.10586.63", min_version:"10.0.10586.0", dir:"\system32", bulletin:bulletin, kb:"3124263") ||
  hotfix_is_vulnerable(os:"10", sp:0, file:"ntoskrnl.exe", version:"10.0.10240.16644", dir:"\system32", bulletin:bulletin, kb:"3124266")
)
{
  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');
}