Vulnerabilities > CVE-2017-0050 - Local Privilege Escalation vulnerability in Microsoft Windows Kernel

047910
CVSS 7.2 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
low complexity
microsoft
nessus

Summary

The kernel API in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7; Windows 8; Windows 10 Gold, 1511, and 1607; Windows RT 8.1; Windows Server 2012 Gold and R2; and Windows Server 2016 does not properly enforce permissions, which allows local users to spoof processes, spoof inter-process communication, or cause a denial of service via a crafted application, aka "Windows Kernel Elevation of Privilege Vulnerability."

Msbulletin

bulletin_idMS17-017
bulletin_url
date2017-03-14T00:00:00
impactElevation of Privilege
knowledgebase_id4013081
knowledgebase_url
severityImportant
titleSecurity Update for Windows Kernel

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS17-017.NASL
descriptionThe remote Windows host is missing a security update. It is, therefore, affected by multiple elevation of privilege vulnerabilities : - An elevation of privilege vulnerability exists in the Windows Kernel API due to improper enforcement of permissions. A local attacker can exploit this, via a specially crafted application, to run processes in an elevated context. (CVE-2017-0050) - An elevation of privilege vulnerability exists in the Windows Transaction Manager due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to run processes in an elevated context. (CVE-2017-0101) - An elevation of privilege vulnerability exists due to a failure to check the length of a buffer prior to copying memory. A local attacker can exploit this, by copying a file to a shared folder or drive, to gain elevated privileges. (CVE-2017-0102) - An elevation of privilege vulnerability exists in the Windows Kernel API due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to gain elevated privileges. (CVE-2017-0103)
last seen2020-06-01
modified2020-06-02
plugin id97733
published2017-03-14
reporterThis script is Copyright (C) 2017-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/97733
titleMS17-017: Security Update for Windows Kernel (4013081)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(97733);
  script_version("1.10");
  script_cvs_date("Date: 2018/07/30 15:31:34");

  script_cve_id(
    "CVE-2017-0050",
    "CVE-2017-0101",
    "CVE-2017-0102",
    "CVE-2017-0103"
  );
  script_bugtraq_id(
    96025,
    96623,
    96625,
    96627
  );
  script_xref(name:"MSFT", value:"MS17-017");
  script_xref(name:"MSKB", value:"4011981");
  script_xref(name:"MSKB", value:"4012212");
  script_xref(name:"MSKB", value:"4012213");
  script_xref(name:"MSKB", value:"4012214");
  script_xref(name:"MSKB", value:"4012215");
  script_xref(name:"MSKB", value:"4012216");
  script_xref(name:"MSKB", value:"4012217");
  script_xref(name:"MSKB", value:"4012606");
  script_xref(name:"MSKB", value:"4013198");
  script_xref(name:"MSKB", value:"4013429");
  script_xref(name:"IAVA", value:"2017-A-0068");

  script_name(english:"MS17-017: Security Update for Windows Kernel (4013081)");
  script_summary(english:"Checks the file versions.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected multiple elevation of privilege
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 :

  - An elevation of privilege vulnerability exists in the
    Windows Kernel API due to improper enforcement of
    permissions. A local attacker can exploit this, via a
    specially crafted application, to run processes in an
    elevated context. (CVE-2017-0050)

  - An elevation of privilege vulnerability exists in the
    Windows Transaction Manager due to improper handling of
    objects in memory. A local attacker can exploit this,
    via a specially crafted application, to run processes in
    an elevated context. (CVE-2017-0101)

  - An elevation of privilege vulnerability exists due to a
    failure to check the length of a buffer prior to copying
    memory. A local attacker can exploit this, by copying a
    file to a shared folder or drive, to gain elevated 
    privileges. (CVE-2017-0102)

  - An elevation of privilege vulnerability exists in the
    Windows Kernel API due to improper handling of objects
    in memory. A local attacker can exploit this, via a
    specially crafted application, to gain elevated
    privileges. (CVE-2017-0103)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/ms17-017");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, 7,
2008 R2, 2012, 8.1, RT 8.1, 2012 R2, 10, and 2016.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/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:L/UI:N/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:"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:"2017/03/14");
  script_set_attribute(attribute:"patch_publication_date",value:"2017/03/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/14");

  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) 2017-2018 Tenable Network Security, Inc.");

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl", "smb_check_rollup.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 = 'MS17-017';
kbs = make_list(
  '4011981',
  '4012212',
  '4012213',
  '4012214',
  '4012215',
  '4012216',
  '4012217',
  '4012606',
  '4013198',
  '4013429'
);

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");
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);

# Windows 8 EOL
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 (hotfix_check_server_nano() == 1) audit(AUDIT_OS_NOT, "a currently supported OS (Windows Nano Server)");

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

date = "03_2017";
if (
  # Vista / Windows Server 2008
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"ntoskrnl.exe", version:"6.0.6002.19741", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:"4011981") ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"ntoskrnl.exe", version:"6.0.6002.24065", min_version:"6.0.6002.20000", dir:"\system32", bulletin:bulletin, kb:"4011981") ||
  # Windows 7 / Server 2008 R2
  smb_check_rollup(os:"6.1", sp:1, rollup_date:date, bulletin:bulletin, rollup_kb_list:make_list(4012212, 4012215)) ||
  # Windows 8.1 / Server 2012 R2
  smb_check_rollup(os:"6.3", sp:0, rollup_date:date, bulletin:bulletin, rollup_kb_list:make_list(4012213, 4012216)) ||
  # Server 2012
  smb_check_rollup(os:"6.2", sp:0, rollup_date:date, bulletin:bulletin, rollup_kb_list:make_list(4012214, 4012217)) ||
  # Windows 10
  smb_check_rollup(os:"10", sp:0, os_build:"10240", rollup_date:date, bulletin:bulletin, rollup_kb_list:make_list(4012606)) ||
  # Windows 10 1511
  smb_check_rollup(os:"10", sp:0, os_build:"10586", rollup_date:date, bulletin:bulletin, rollup_kb_list:make_list(4013198)) ||
  # Windows 10 1607 / Server 2016 x64
  smb_check_rollup(os:"10", sp:0, os_build:"14393", rollup_date:date, bulletin:bulletin, rollup_kb_list:make_list(4013429))
  )
{
  set_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, hotfix_get_audit_report());
}