MS09-050: Vulnerabilities in SMBv2 Could Allow Remote Code Execution (975517) (EDUCATEDSCHOLAR) - Nessus

Critical Plugin ID: 42106

This page contains detailed information about the MS09-050: Vulnerabilities in SMBv2 Could Allow Remote Code Execution (975517) (EDUCATEDSCHOLAR) 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: 42106
Name: MS09-050: Vulnerabilities in SMBv2 Could Allow Remote Code Execution (975517) (EDUCATEDSCHOLAR)
Filename: smb_nt_ms09-050.nasl
Vulnerability Published: 2009-09-08
This Plugin Published: 2009-10-13
Last Modification Time: 2018-11-15
Plugin Version: 1.29
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: Critical
Vulnerability Published: 2009-09-08
Patch Published: 2009-10-13
CVE [?]: CVE-2009-2526, CVE-2009-2532, CVE-2009-3103
CPE [?]: cpe:/o:microsoft:windows
Exploited by Malware: True
In the News: True

Synopsis

The remote SMB server can be abused to execute code remotely.

Description

The remote Windows host contains a vulnerable SMBv2 implementation with the following issues :

- A specially crafted SMBv2 packet can cause an infinite loop in the Server service. A remote, unauthenticated attacker can exploit this to cause a denial of service. (CVE-2009-2526)

- Sending a specially crafted SMBv2 packet to the Server service can result in code execution. A remote, unauthenticated attacker can exploit this to take complete control of the system. (CVE-2009-2532, CVE-2009-3103) (EDUCATEDSCHOLAR)

EDUCATEDSCHOLAR is one of multiple Equation Group vulnerabilities and exploits disclosed on 2017/04/14 by a group known as the Shadow Brokers.

Solution

Microsoft has released a set of patches for Windows Vista and 2008.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the MS09-050: Vulnerabilities in SMBv2 Could Allow Remote Code Execution (975517) (EDUCATEDSCHOLAR) vulnerability:

Metasploit: exploit/windows/smb/ms09_050_smb2_negotiate_func_index
[MS09-050 Microsoft SRV2.SYS SMB Negotiate ProcessID Function Table Dereference]
Metasploit: auxiliary/dos/windows/smb/ms09_050_smb2_negotiate_pidhigh
[Microsoft SRV2.SYS SMB Negotiate ProcessID Function Table Dereference]
Metasploit: auxiliary/dos/windows/smb/ms09_050_smb2_session_logoff
[Microsoft SRV2.SYS SMB2 Logoff Remote Kernel NULL Pointer Dereference]
Exploit-DB: exploits/windows/dos/9594.txt
[EDB-9594: Microsoft Windows Vista/7 - SMB2.0 Negotiate Protocol Request Remote Blue Screen of Death (MS07-063)]
Exploit-DB: exploits/windows/dos/10005.py
[EDB-10005: Microsoft Windows 7/2008 R2 - Remote Kernel Crash]
Exploit-DB: exploits/windows/dos/12524.py
[EDB-12524: Microsoft Windows - SMB2 Negotiate Protocol '0x72' Response Denial of Service]
Exploit-DB: exploits/windows/remote/14674.txt
[EDB-14674: Microsoft Windows - 'srv2.sys' SMB Negotiate ProcessID Function Table Dereference (MS09-050)]
Exploit-DB: exploits/windows/remote/16363.rb
[EDB-16363: Microsoft Windows - 'srv2.sys' SMB Negotiate ProcessID Function Table Dereference (MS09-050) (Metasploit)]
GitHub: https://github.com/uroboros-security/SMB-CVE
[CVE-2009-2526]
GitHub: https://github.com/Al1ex/WindowsElevation
[CVE-2009-2532]
GitHub: https://github.com/Ascotbe/Kernelhub
[CVE-2009-2532]
GitHub: https://github.com/uroboros-security/SMB-CVE
[CVE-2009-2532]
GitHub: https://github.com/ycdxsb/WindowsPrivilegeEscalation
[CVE-2009-2532]
GitHub: https://github.com/ankh2054/python-exploits
[CVE-2009-3103]
GitHub: https://github.com/mazding/ms09050
[CVE-2009-3103: cve-2009-3103]
GitHub: https://github.com/notsag-dev/htb-blue
[CVE-2009-3103]
GitHub: https://github.com/rosonsec/Exploits
[CVE-2009-3103]
GitHub: https://github.com/uroboros-security/SMB-CVE
[CVE-2009-3103]
GitHub: https://github.com/offensive-security/exploitdb-bin-sploits/blob/master/bin-sploits/14674.zip
[EDB-14674]
GitHub: https://github.com/sooklalad/ms09050
[CVE-2009-3103: Cve-2009-3103]
Immunity Canvas: CANVAS

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 V2 Vector [?]: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C

CVSS Base Score:	10.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	10.0
CVSS Temporal Score:	8.7 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.7 (High)

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

CVSS Base Score:	9.8 (Critical)
Impact Subscore:	5.9
Exploitability Subscore:	3.9
CVSS Temporal Score:	9.4 (Critical)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	9.4 (Critical)

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Plugin Source

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


include("compat.inc");


if (description)
{
  script_id(42106);
  script_version("1.29");
  script_cvs_date("Date: 2018/11/15 20:50:30");

  script_cve_id("CVE-2009-2526", "CVE-2009-2532", "CVE-2009-3103");
  script_bugtraq_id(36299, 36594, 36595);
  script_xref(name:"MSFT", value:"MS09-050");
  script_xref(name:"MSKB", value:"975517");
  script_xref(name:"CERT", value:"135940");
  script_xref(name:"EDB-ID", value:"9594");
  script_xref(name:"EDB-ID", value:"10005");
  script_xref(name:"EDB-ID", value:"12524");
  script_xref(name:"EDB-ID", value:"14674");
  script_xref(name:"EDB-ID", value:"16363");

  script_name(english:"MS09-050: Vulnerabilities in SMBv2 Could Allow Remote Code Execution (975517) (EDUCATEDSCHOLAR)");
  script_summary(english:"Checks version of srv2.sys");

  script_set_attribute(attribute:"synopsis", value:"The remote SMB server can be abused to execute code remotely.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host contains a vulnerable SMBv2 implementation with
the following issues :

  - A specially crafted SMBv2 packet can cause an
    infinite loop in the Server service.  A remote,
    unauthenticated attacker can exploit this to cause
    a denial of service. (CVE-2009-2526)

  - Sending a specially crafted SMBv2 packet to the Server
    service can result in code execution.  A remote,
    unauthenticated attacker can exploit this to take
    complete control of the system. (CVE-2009-2532,
    CVE-2009-3103) (EDUCATEDSCHOLAR)

EDUCATEDSCHOLAR is one of multiple Equation Group vulnerabilities and
exploits disclosed on 2017/04/14 by a group known as the Shadow
Brokers.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2009/ms09-050");
  script_set_attribute(attribute:"solution", value:"Microsoft has released a set of patches for Windows Vista and 2008.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:N/AC:L/PR:N/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:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'MS09-050 Microsoft SRV2.SYS SMB Negotiate ProcessID Function Table Dereference');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');
  script_cwe_id(94, 399);

  script_set_attribute(attribute:"vuln_publication_date", value:"2009/09/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2009/10/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/10/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");
  script_copyright(english:"This script is Copyright (C) 2009-2018 Tenable Network Security, Inc.");

  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_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS09-050';
kb = '975517';

kbs = make_list(kb);
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:'0,2') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

rootfile = hotfix_get_systemroot();
if (!rootfile) exit(1, "Failed to get the system root.");

share = hotfix_path2share(path:rootfile);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

if (
  # Vista SP0 (x86 & x64)
  hotfix_is_vulnerable(os:"6.0",   file:"srv2.sys", version:"6.0.6000.16927",   min_version:"6.0.6000.0", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0",   file:"srv2.sys", version:"6.0.6000.21127",   min_version:"6.0.6000.20000", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||

  # Vista / 2k8 SP1 (x86 & x64)
  hotfix_is_vulnerable(os:"6.0",   file:"srv2.sys", version:"6.0.6001.18331",   min_version:"6.0.6001.0", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0",   file:"srv2.sys", version:"6.0.6001.22522",   min_version:"6.0.6001.20000", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||

  # Vista / 2k8 SP2 (x86 & x64)
  hotfix_is_vulnerable(os:"6.0",   file:"srv2.sys", version:"6.0.6002.18112",   min_version:"6.0.6002.0", dir:"\system32\drivers", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0",   file:"srv2.sys", version:"6.0.6002.22225",   min_version:"6.0.6002.20000", dir:"\system32\drivers", bulletin:bulletin, kb:kb)
)
{
  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_ms09-050.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\smb_nt_ms09-050.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/smb_nt_ms09-050.nasl

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How to Run

Here is how to run the MS09-050: Vulnerabilities in SMBv2 Could Allow Remote Code Execution (975517) (EDUCATEDSCHOLAR) 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 MS09-050: Vulnerabilities in SMBv2 Could Allow Remote Code Execution (975517) (EDUCATEDSCHOLAR) plugin ID 42106.
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_ms09-050.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a smb_nt_ms09-050.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_ms09-050.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_ms09-050.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

36299, 36594, 36595

MSKB | Microsoft Knowledge Base:

975517

MSFT | Microsoft Security Bulletin:

MS09-050

CERT | Computer Emergency Response Team:

135940

CWE | Common Weakness Enumeration:

CWE-94 (Weakness) Improper Control of Generation of Code ('Code Injection')
CWE-399 (Category) Resource Management Errors

See also:

Similar and related Nessus plugins:

40887 - MS09-050: Microsoft Windows SMB2 _Smb2ValidateProviderCallback() Vulnerability (975497) (EDUCATEDSCHOLAR) (uncredentialed check)
39622 - MS09-032: Cumulative Security Update of ActiveX Kill Bits (973346)
39783 - MS09-043: Vulnerabilities in Microsoft Office Web Components Control Could Allow Remote Code Execution (973472)
35361 - MS09-001: Vulnerabilities in SMB Could Allow Remote Code Execution (958687)
35630 - MS09-002: Cumulative Security Update for Internet Explorer (961260)
35632 - MS09-004: Vulnerability in Microsoft SQL Server Could Allow Remote Code Execution (959420)
36148 - MS09-010: Vulnerabilities in WordPad and Office Text Converters Could Allow Remote Code Execution (960477)
36150 - MS09-012: Vulnerabilities in Windows Could Allow Elevation of Privilege (959454)
36152 - MS09-014: Cumulative Security Update for Internet Explorer (963027)
39341 - MS09-019: Cumulative Security Update for Internet Explorer (969897)
39342 - MS09-020: Vulnerabilities in Internet Information Services (IIS) Could Allow Elevation of Privilege (970483)
39344 - MS09-022: Vulnerabilities in Windows Print Spooler Could Allow Remote Code Execution (961501)
39349 - MS09-027: Vulnerabilities in Microsoft Office Word Could Allow Remote Code Execution (969514)
39791 - MS09-028: Vulnerabilities in Microsoft DirectShow Could Allow Remote Code Execution (971633)
40556 - MS09-037: Vulnerabilities in Microsoft Active Template Library (ATL) Could Allow Remote Code Execution (973908)
40562 - MS09-043: Vulnerabilities in Microsoft Office Web Components Could Allow Remote Code Execution (957638)
40891 - MS09-048: Vulnerabilities in Windows TCP/IP Could Allow Remote Code Execution (967723)
42107 - MS09-051: Vulnerabilities in Windows Media Runtime Could Allow Remote Code Execution (975682)
42109 - MS09-053: Vulnerabilities in FTP Service for Internet Information Services Could Allow Remote Code Execution (975254)
42110 - MS09-054: Cumulative Security Update for Internet Explorer (974455)
42112 - MS09-056: Vulnerabilities in Windows CryptoAPI Could Allow Spoofing (974571)
42117 - MS09-061: Vulnerabilities in the Microsoft .NET Common Language Runtime Could Allow Remote Code Execution (974378)
42439 - MS09-065: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Remote Code Execution (969947)
42441 - MS09-067: Vulnerabilities in Microsoft Office Excel Could Allow Remote Code Execution (972652)
43064 - MS09-072: Cumulative Security Update for Internet Explorer (976325)
40825 - MS09-053: Microsoft IIS FTPd NLST Command Remote Buffer Overflow (975191) (uncredentialed check)
50062 - MS09-017 / MS09-021 / MS09-027: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (967340 / 969462 / 969514) (Mac OS X)
50063 - MS09-067 / MS09-068: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (972652 / 976307) (Mac OS X)
35362 - MS09-001: Microsoft Windows SMB Vulnerabilities Remote Code Execution (958687) (uncredentialed check)
35635 - MS09-004: Vulnerability in Microsoft SQL Server Could Allow Remote Code Execution (959420) (uncredentialed check)
108811 - Windows Server 2008 Critical RCE Vulnerabilities (uncredentialed) (PCI/DSS)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file smb_nt_ms09-050.nasl version 1.29. For more plugins, visit the Nessus Plugin Library.

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MS09-050: Vulnerabilities in SMBv2 Could Allow Remote Code Execution (975517) (EDUCATEDSCHOLAR) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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