6.3 Medium
AI Score
Confidence
Low
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.96 High
EPSS
Percentile
99.5%
This host is missing a critical security update according to
Microsoft Bulletin MS09-056.
# Copyright (C) 2009 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.900876");
script_version("2022-05-25T07:40:23+0000");
script_tag(name:"last_modification", value:"2022-05-25 07:40:23 +0000 (Wed, 25 May 2022)");
script_tag(name:"creation_date", value:"2009-10-14 16:47:08 +0200 (Wed, 14 Oct 2009)");
script_tag(name:"cvss_base", value:"7.5");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_cve_id("CVE-2009-2510", "CVE-2009-2511");
script_name("Microsoft Windows CryptoAPI X.509 Spoofing Vulnerabilities (974571)");
script_xref(name:"URL", value:"http://support.microsoft.com/kb/974571");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36475");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36577");
script_xref(name:"URL", value:"http://www.vupen.com/english/advisories/2009/2891");
script_xref(name:"URL", value:"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-056");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2009 Greenbone Networks GmbH");
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 will allow attacker to conduct spoofing attacks on
the affected system.");
script_tag(name:"affected", value:"- Microsoft Windows 7
- Microsoft Windows 2K Service Pack 4 and prior
- Microsoft Windows XP Service Pack 3 and prior
- Microsoft Windows 2K3 Service Pack 2 and prior
- Microsoft Windows Vista Service Pack 1/2 and prior
- Microsoft Windows Server 2008 Service Pack 1/2 and prior");
script_tag(name:"insight", value:"- The issue is due to the Windows CryptoAPI incorrectly parsing a null
terminator as the end of any values identified by an Object Identifier (OID)
when processing ASN.1 information from X.509 certificates.
- An integer overflow error in the Windows CryptoAPI when parsing ASN.1 object
identifiers from X.509 certificates, which could allow an attacker to
generate a malicious certificate that would be parsed incorrectly by the
Windows CryptoAPI.");
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 a critical security update according to
Microsoft Bulletin MS09-056.");
script_tag(name:"qod_type", value:"executable_version");
script_tag(name:"solution_type", value:"VendorFix");
script_xref(name:"URL", value:"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-056");
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, win2k:5, win2003:3, winVista:3, win7:1, win2008:3) <= 0){
exit(0);
}
# MS09-056 Hotfix check
if(hotfix_missing(name:"974571") == 0){
exit(0);
}
sysPath = smb_get_system32root();
if(sysPath)
{
dllVer = fetch_file_version(sysPath:sysPath, file_name:"msasn1.dll");
if(!dllVer){
exit(0);
}
}
if(hotfix_check_sp(win2k:5) > 0)
{
if(version_is_less(version:dllVer, test_version:"5.0.2195.7334")){
report = report_fixed_ver(installed_version:dllVer, fixed_version:"5.0.2195.7334", install_path:sysPath);
security_message(port: 0, data: report);
}
}
# Windows XP
else if(hotfix_check_sp(xp:4) > 0)
{
SP = get_kb_item("SMB/WinXP/ServicePack");
if("Service Pack 2" >< SP)
{
if(version_is_less(version:dllVer, test_version:"5.1.2600.3624")){
report = report_fixed_ver(installed_version:dllVer, fixed_version:"5.1.2600.3624", install_path:sysPath);
security_message(port: 0, data: report);
}
exit(0);
}
else if("Service Pack 3" >< SP)
{
if(version_is_less(version:dllVer, test_version:"5.1.2600.5875")){
report = report_fixed_ver(installed_version:dllVer, fixed_version:"5.1.2600.5875", install_path:sysPath);
security_message(port: 0, data: report);
}
exit(0);
}
security_message( port: 0, data: "The target host was found to be vulnerable" );
}
else if(hotfix_check_sp(win2003:3) > 0)
{
SP = get_kb_item("SMB/Win2003/ServicePack");
if("Service Pack 2" >< SP)
{
if(version_is_less(version:dllVer, test_version:"5.2.3790.4584")){
report = report_fixed_ver(installed_version:dllVer, fixed_version:"5.2.3790.4584", install_path:sysPath);
security_message(port: 0, data: report);
}
exit(0);
}
security_message( port: 0, data: "The target host was found to be vulnerable" );
}
sysPath = smb_get_system32root();
if(sysPath)
{
dllVer = fetch_file_version(sysPath:sysPath, file_name:"msasn1.dll");
if(!dllVer){
exit(0);
}
}
if(hotfix_check_sp(winVista:3) > 0)
{
SP = get_kb_item("SMB/WinVista/ServicePack");
if("Service Pack 1" >< SP)
{
if(version_is_less(version:dllVer, test_version:"6.0.6001.18326")){
report = report_fixed_ver(installed_version:dllVer, fixed_version:"6.0.6001.18326", install_path:sysPath);
security_message(port: 0, data: report);
}
exit(0);
}
if("Service Pack 2" >< SP)
{
if(version_is_less(version:dllVer, test_version:"6.0.6002.18106")){
report = report_fixed_ver(installed_version:dllVer, fixed_version:"6.0.6002.18106", install_path:sysPath);
security_message(port: 0, data: report);
}
exit(0);
}
security_message( port: 0, data: "The target host was found to be vulnerable" );
}
else if(hotfix_check_sp(win2008:3) > 0)
{
SP = get_kb_item("SMB/Win2008/ServicePack");
if("Service Pack 1" >< SP)
{
if(version_is_less(version:dllVer, test_version:"6.0.6001.18326")){
report = report_fixed_ver(installed_version:dllVer, fixed_version:"6.0.6001.18326", install_path:sysPath);
security_message(port: 0, data: report);
}
exit(0);
}
if("Service Pack 2" >< SP)
{
if(version_is_less(version:dllVer, test_version:"6.0.6002.18106")){
report = report_fixed_ver(installed_version:dllVer, fixed_version:"6.0.6002.18106", install_path:sysPath);
security_message(port: 0, data: report);
}
exit(0);
}
security_message( port: 0, data: "The target host was found to be vulnerable" );
}
else if(hotfix_check_sp(win7:1) > 0)
{
if(version_is_less(version:dllVer, test_version:"6.1.7600.16415")){
report = report_fixed_ver(installed_version:dllVer, fixed_version:"6.1.7600.16415", install_path:sysPath);
security_message(port: 0, data: report);
}
}