Windows Kernel-Mode Drivers Privilege Elevation Vulnerability (2641653)

# SPDX-FileCopyrightText: 2012 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("1.3.6.1.4.1.25623.1.0.902907");
  script_version("2026-04-28T06:28:06+0000");
  script_cve_id("CVE-2012-0157");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2026-04-28 06:28:06 +0000 (Tue, 28 Apr 2026)");
  script_tag(name:"creation_date", value:"2012-03-14 09:00:53 +0530 (Wed, 14 Mar 2012)");
  script_name("Windows Kernel-Mode Drivers Privilege Elevation Vulnerability (2641653)");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2012 Greenbone AG");
  script_family("Windows : Microsoft Bulletins");
  script_dependencies("secpod_reg_enum.nasl");
  script_require_ports(139, 445);
  script_mandatory_keys("SMB/registry_enumerated");

  script_tag(name:"impact", value:"Successful exploitation could allow local attackers to gain escalated
  privileges.");

  script_tag(name:"affected", value:"- Microsoft Windows 7 Service Pack 1 and prior

  - Microsoft Windows XP Service Pack 3 and prior

  - Microsoft Windows 2003 Service Pack 2 and prior

  - Microsoft Windows Vista Service Pack 2 and prior

  - Microsoft Windows Server 2008 Service Pack 2 and prior");

  script_tag(name:"insight", value:"The flaw is due to an error in win32k.sys when handling the 'PostMessage()'
  function and can be exploited via an application passing specially crafted input to the function.");

  script_tag(name:"solution", value:"The vendor has released updates. Please see the references for more information.");

  script_tag(name:"summary", value:"This host is missing an important security update according to
  Microsoft Bulletin MS12-018.");

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

  script_xref(name:"URL", value:"http://support.microsoft.com/kb/2641653");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/52317");
  script_xref(name:"URL", value:"http://www.securitytracker.com/id/1026793");
  script_xref(name:"URL", value:"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-018");

  exit(0);
}

include("smb_nt.inc");
include("secpod_reg.inc");
include("version_func.inc");
include("secpod_smb_func.inc");

if(hotfix_check_sp(xp:4, win2003:3, winVista:3, win2008:3, win7:2) <= 0){
  exit(0);
}

## MS12-018 Hotfix (2641653)
if(hotfix_missing(name:"2641653") == 0){
  exit(0);
}

sysPath = smb_get_systemroot();
if(! sysPath){
  exit(0);
}

sysVer = fetch_file_version(sysPath:sysPath, file_name:"system32\Win32k.sys");
if(! sysVer){
  exit(0);
}

if(hotfix_check_sp(xp:4) > 0)
{
  if(version_is_less(version:sysVer, test_version:"5.1.2600.6189")){
    security_message( port: 0, data: "The target host was found to be vulnerable" );
  }
  exit(0);
}

else if(hotfix_check_sp(win2003:3) > 0)
{
  if(version_is_less(version:sysVer, test_version:"5.2.3790.4959")){
    security_message( port: 0, data: "The target host was found to be vulnerable" );
  }
  exit(0);
}

else if(hotfix_check_sp(winVista:3, win2008:3) > 0)
{
  if(version_is_less(version:sysVer, test_version:"6.0.6002.18580") ||
     version_in_range(version:sysVer, test_version:"6.0.6002.22000", test_version2:"6.0.6002.22789")){
    security_message( port: 0, data: "The target host was found to be vulnerable" );
  }
  exit(0);
}

else if(hotfix_check_sp(win7:2) > 0)
{
  if(version_is_less(version:sysVer, test_version:"6.1.7600.16957") ||
     version_in_range(version:sysVer, test_version:"6.1.7600.20000", test_version2:"6.1.7600.21142")||
     version_in_range(version:sysVer, test_version:"6.1.7601.17000", test_version2:"6.1.7601.17771")||
     version_in_range(version:sysVer, test_version:"6.1.7601.21000", test_version2:"6.1.7601.21913")){
    security_message( port: 0, data: "The target host was found to be vulnerable" );
  }
}