MS16-016: Security Update for WebDAV to Address Elevation of Privilege (3136041) - Nessus

High Plugin ID: 88648

This page contains detailed information about the MS16-016: Security Update for WebDAV to Address Elevation of Privilege (3136041) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 88648
Name: MS16-016: Security Update for WebDAV to Address Elevation of Privilege (3136041)
Filename: smb_nt_ms16-016.nasl
Vulnerability Published: 2016-02-09
This Plugin Published: 2016-02-09
Last Modification Time: 2019-11-20
Plugin Version: 1.15
Plugin Type: local
Plugin Family: Windows : Microsoft Bulletins
Dependencies: ms_bulletin_checks_possible.nasl, smb_hotfixes.nasl
Required KB Items [?]: SMB/MS_Bulletin_Checks/Possible

Vulnerability Information

Severity: High
Vulnerability Published: 2016-02-09
Patch Published: 2016-02-09
CVE [?]: CVE-2016-0051
CPE [?]: cpe:/o:microsoft:windows
Exploited by Malware: True

Synopsis

The remote host is affected by an elevation of privilege vulnerability.

Description

The remote Windows host is missing a security update. It is, therefore, affected by a flaw in the Microsoft Web Distributed Authoring and Versioning (WebDAV) client due to improper validation of user-supplied input. A local attacker can exploit this, via a specially crafted application, to execute arbitrary code with elevated privileges.

Solution

Microsoft has released a set of patches for Windows Vista, 2008, 7, 2008 R2, 2012, 8.1, RT 8.1, 2012 R2, and 10.

Public Exploits

Target Network Port(s): 139, 445
Target Asset(s): Host/patch_management_checks
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub, Core Impact)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the MS16-016: Security Update for WebDAV to Address Elevation of Privilege (3136041) vulnerability:

Metasploit: exploit/windows/local/ms16_016_webdav
[MS16-016 mrxdav.sys WebDav Local Privilege Escalation]
Exploit-DB: exploits/windows/local/40085.rb
[EDB-40085: Microsoft Windows 7 SP1 - 'mrxdav.sys' WebDAV Privilege Escalation (MS16-016) (Metasploit)]
Exploit-DB: exploits/windows_x86/local/39432.c
[EDB-39432: Microsoft Windows 7 SP1 (x86) - 'WebDAV' Local Privilege Escalation (MS16-016) (1)]
Exploit-DB: exploits/windows/local/39788.txt
[EDB-39788: Microsoft Windows 7 - 'WebDAV' Local Privilege Escalation (MS16-016) (2)]
GitHub: https://github.com/Al1ex/WindowsElevation
[CVE-2016-0051]
GitHub: https://github.com/Ascotbe/Kernelhub
[CVE-2016-0051]
GitHub: https://github.com/ganrann/CVE-2016-0051
[CVE-2016-0051: CVE-2016-0051 样本库]
GitHub: https://github.com/hexx0r/CVE-2016-0051
[CVE-2016-0051]
GitHub: https://github.com/koczkatamas/CVE-2016-0051
[CVE-2016-0051: EoP (Win7) & BSoD (Win10) PoC for CVE-2016-0051 (MS-016)]
GitHub: https://github.com/uhub/awesome-c-sharp
[CVE-2016-0051]
GitHub: https://github.com/ycdxsb/WindowsPrivilegeEscalation
[CVE-2016-0051]
GitHub: https://github.com/offensive-security/exploitdb-bin-sploits/blob/master/bin-sploits/39432-1.zip
[EDB-39432]
GitHub: https://github.com/offensive-security/exploitdb-bin-sploits/blob/master/bin-sploits/39788.zip
[EDB-39788]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2016-0051
CVSS V2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C

CVSS Base Score:	7.2 (High)
Impact Subscore:	10.0
Exploitability Subscore:	3.9
CVSS Temporal Score:	6.3 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.3 (Medium)

CVSS V3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CVSS Base Score:	7.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	1.8
CVSS Temporal Score:	7.5 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.5 (High)

STIG Severity [?]: II
STIG Risk Rating: Medium

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Plugin Source

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

include("compat.inc");

if (description)
{
  script_id(88648);
  script_version("1.15");
  script_cvs_date("Date: 2019/11/20");

  script_cve_id("CVE-2016-0051");
  script_bugtraq_id(82682);
  script_xref(name:"MSFT", value:"MS16-016");
  script_xref(name:"MSKB", value:"3135173");
  script_xref(name:"MSKB", value:"3124280");
  script_xref(name:"MSKB", value:"3135174");
  script_xref(name:"IAVA", value:"2016-A-0049");

  script_name(english:"MS16-016: Security Update for WebDAV to Address Elevation of Privilege (3136041)");
  script_summary(english:"Checks the version of mrxdav.sys");

  script_set_attribute(attribute:"synopsis", value:
"The remote 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 a flaw in the Microsoft Web Distributed
Authoring and Versioning (WebDAV) client due to improper validation of
user-supplied input. A local attacker can exploit this, via a
specially crafted application, to execute arbitrary code with elevated
privileges.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-016");
  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, and 10.");
  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:"cvss_score_source", value:"CVE-2016-0051");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'MS16-016 mrxdav.sys WebDav Local Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/02/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/09");

  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 = 'MS16-016';
kbs = make_list('3135173', '3124280', '3135174');

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);
productname = get_kb_item_or_exit("SMB/ProductName", 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);
if ("Windows 8" >< productname && "8.1" >!< 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);


if (
  # Windows 8.1 / Windows Server 2012 R2
  hotfix_is_vulnerable(os:"6.3", sp:0, file:"mrxdav.sys", version:"6.3.9600.18189", min_version:"6.3.9600.16000", dir:"\system32\drivers", bulletin:bulletin, kb:"3124280") ||

  # Windows Server 2012
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"mrxdav.sys", version:"6.2.9200.21738", min_version:"6.2.9200.20000", dir:"\system32\drivers", bulletin:bulletin, kb:"3124280") ||
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"mrxdav.sys", version:"6.2.9200.17619", min_version:"6.2.9200.16000", dir:"\system32\drivers", bulletin:bulletin, kb:"3124280") ||

  # Windows 7 / Server 2008 R2
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mrxdav.sys", version:"6.1.7601.23317", min_version:"6.1.7601.22000", dir:"\system32\drivers", bulletin:bulletin, kb:"3124280") ||
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mrxdav.sys", version:"6.1.7601.19113", min_version:"6.1.7600.16000", dir:"\system32\drivers", bulletin:bulletin, kb:"3124280") ||

  # Vista / Windows Server 2008
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mrxdav.sys", version:"6.0.6002.23886", min_version:"6.0.6002.23000", dir:"\system32\drivers", bulletin:bulletin, kb:"3124280") ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mrxdav.sys", version:"6.0.6002.19576", min_version:"6.0.6002.18000", dir:"\system32\drivers", bulletin:bulletin, kb:"3124280")
)
  vuln++;
if (
  # 10 RTM
  hotfix_is_vulnerable(os:"10", sp:0, file:"mrxdav.sys", version:"10.0.10240.16683", dir:"\system32\drivers", bulletin:bulletin, kb:"3135174") ||
  # 10 threshold 2 (aka 1511)
  hotfix_is_vulnerable(os:"10", sp:0, file:"mrxdav.sys", version:"10.0.10586.103", min_version:"10.0.10586.0", dir:"\system32\drivers", bulletin:bulletin, kb:"3135173")
)
  vuln++;

if (vuln)
{
  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, 'affected');
}

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/smb_nt_ms16-016.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\smb_nt_ms16-016.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/smb_nt_ms16-016.nasl

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How to Run

Here is how to run the MS16-016: Security Update for WebDAV to Address Elevation of Privilege (3136041) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Windows : Microsoft Bulletins plugin family.
On the right side table select MS16-016: Security Update for WebDAV to Address Elevation of Privilege (3136041) plugin ID 88648.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl smb_nt_ms16-016.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a smb_nt_ms16-016.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - smb_nt_ms16-016.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state smb_nt_ms16-016.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

82682

MSKB | Microsoft Knowledge Base:

3124280, 3135173, 3135174

MSFT | Microsoft Security Bulletin:

MS16-016

IAVA | Information Assurance Vulnerability Alert:

2016-A-0049

See also:

Similar and related Nessus plugins:

88642 - MS16-009: Cumulative Security Update for Internet Explorer (3134220)
88646 - MS16-014: Security Update for Microsoft Windows to Address Remote Code Execution (3134228)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file smb_nt_ms16-016.nasl version 1.15. For more plugins, visit the Nessus Plugin Library.

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MS16-016: Security Update for WebDAV to Address Elevation of Privilege (3136041) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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