9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
45.1%
This host is missing an important security
update according to Microsoft KB5031989
# SPDX-FileCopyrightText: 2023 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("1.3.6.1.4.1.25623.1.0.832622");
script_version("2023-11-23T05:06:17+0000");
script_cve_id("CVE-2023-36049", "CVE-2023-36560", "CVE-2023-36558", "CVE-2023-36038");
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_tag(name:"last_modification", value:"2023-11-23 05:06:17 +0000 (Thu, 23 Nov 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2023-11-21 19:25:00 +0000 (Tue, 21 Nov 2023)");
script_tag(name:"creation_date", value:"2023-11-15 11:09:01 +0530 (Wed, 15 Nov 2023)");
script_name("Microsoft .NET Framework Multiple Vulnerabilities (KB5031989)");
script_tag(name:"summary", value:"This host is missing an important security
update according to Microsoft KB5031989");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"Multiple flaws exist due to,
- ASP.NET Security Feature Bypass Vulnerability.
- ASP.NET Core Denial of Service Vulnerability.
- .NET Framework, and Visual Studio Elevation of Privilege Vulnerability.");
script_tag(name:"impact", value:"Successful exploitation will allow attackers to
elevate privileges and bypass security restrictions on the target system.");
script_tag(name:"affected", value:"Microsoft .NET Framework 4.8 on Microsoft Windows 10 Version 1607 and Microsoft Windows Server 2016.");
script_tag(name:"solution", value:"The vendor has released updates. Please see the references for more information.");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"executable_version");
script_xref(name:"URL", value:"https://support.microsoft.com/en-us/help/5031989");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 Greenbone AG");
script_family("Windows : Microsoft Bulletins");
script_dependencies("smb_reg_service_pack.nasl");
script_require_ports(139, 445);
script_mandatory_keys("SMB/WindowsVersion");
exit(0);
}
include("smb_nt.inc");
include("secpod_reg.inc");
include("version_func.inc");
include("secpod_smb_func.inc");
if(hotfix_check_sp(win10:1, win10x64:1, win2016:1) <= 0){
exit(0);
}
sysPath = smb_get_system32root();
if(!sysPath ) {
exit(0);
}
edgeVer = fetch_file_version(sysPath:sysPath, file_name:"edgehtml.dll");
if(!edgeVer || edgeVer !~ "^11\.0\.14393") {
exit(0);
}
if(!registry_key_exists(key:"SOFTWARE\Microsoft\.NETFramework")){
if(!registry_key_exists(key:"SOFTWARE\Microsoft\ASP.NET")){
if(!registry_key_exists(key:"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\")){
exit(0);
}
}
}
key_list = make_list("SOFTWARE\Microsoft\.NETFramework\", "SOFTWARE\Microsoft\ASP.NET\", "SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\");
foreach key(key_list)
{
if(".NETFramework" >< key)
{
foreach item (registry_enum_keys(key:key))
{
NetPath = registry_get_sz(key:key, item:"InstallRoot");
if(NetPath && "\Microsoft.NET\Framework" >< NetPath)
{
foreach item (registry_enum_keys(key:key))
{
dotPath = NetPath + item;
dllVer = fetch_file_version(sysPath:dotPath, file_name:"System.web.dll");
if(dllVer)
{
if(version_in_range(version:dllVer, test_version:"4.8", test_version2:"4.8.4681.0"))
{
VULN = TRUE ;
vulnerable_range = "4.8 - 4.8.4681.0" ;
break;
}
}
}
if(vulnerable_range){
break;
}
}
}
}
if((!vulnerable_range) && "ASP.NET" >< key)
{
foreach item (registry_enum_keys(key:key))
{
dotPath = registry_get_sz(key:key, item:"Path");
if(dotPath && "\Microsoft.NET\Framework" >< dotPath)
{
dllVer = fetch_file_version(sysPath:dotPath, file_name:"System.Web.dll");
if(dllVer)
{
if(version_in_range(version:dllVer, test_version:"4.8", test_version2:"4.8.4681"))
{
VULN = TRUE ;
vulnerable_range = "4.8 - 4.8.4681" ;
break;
}
}
}
}
}
## For versions greater than 4.5 (https://docs.microsoft.com/en-us/dotnet/framework/migration-guide/how-to-determine-which-versions-are-installed#net_b)
if((!vulnerable_range) && "NET Framework Setup" >< key)
{
dotPath = registry_get_sz(key:key, item:"InstallPath");
if(dotPath && "\Microsoft.NET\Framework" >< dotPath)
{
dllVer = fetch_file_version(sysPath:dotPath, file_name:"System.Web.dll");
if(dllVer)
{
if(version_in_range(version:dllVer, test_version:"4.8", test_version2:"4.8.4681.0"))
{
VULN = TRUE ;
vulnerable_range = "4.8 - 4.8.4681" ;
break;
}
}
}
}
if(VULN)
{
report = report_fixed_ver(file_checked:dotPath + "\System.Web.dll",
file_version:dllVer, vulnerable_range:vulnerable_range);
security_message(port:0, data:report);
exit(0);
}
}
exit(99);
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
45.1%