5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.8 High
AI Score
Confidence
High
0.004 Low
EPSS
Percentile
73.9%
This host is missing a critical security
update according to Microsoft Security Updates KB4055000.
# SPDX-FileCopyrightText: 2018 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-or-later
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.812703");
script_version("2023-11-03T16:10:08+0000");
script_cve_id("CVE-2018-0764", "CVE-2018-0786");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:P/A:N");
script_tag(name:"last_modification", value:"2023-11-03 16:10:08 +0000 (Fri, 03 Nov 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
script_tag(name:"creation_date", value:"2018-01-10 10:03:51 +0530 (Wed, 10 Jan 2018)");
script_name("Microsoft .NET Framework DoS And Security Feature Bypass Vulnerability (KB4055000)");
script_tag(name:"summary", value:"This host is missing a critical security
update according to Microsoft Security Updates KB4055000.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"Multiple flaws are due to:
- .NET Framework (and .NET Core) components do not completely validate
certificates.
- .NET, and .NET core, improperly process XML documents.");
script_tag(name:"impact", value:"Successful exploitation will allow remote
attackers to cause a denial of service against a .NET application and also
to bypass certain security restrictions.");
script_tag(name:"affected", value:"- Microsoft .NET Framework 4.6
- Microsoft .NET Framework 4.6.1
- Microsoft .NET Framework 4.6.2
- Microsoft .NET Framework 4.7");
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/4055000");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2018 Greenbone AG");
script_family("Windows : Microsoft Bulletins");
script_dependencies("smb_reg_service_pack.nasl");
script_mandatory_keys("SMB/WindowsVersion");
script_require_ports(139, 445);
exit(0);
}
include("smb_nt.inc");
include("secpod_reg.inc");
include("version_func.inc");
include("secpod_smb_func.inc");
if(hotfix_check_sp(win2012:1) <= 0){
exit(0);
}
key = "SOFTWARE\Microsoft\ASP.NET\";
if(!registry_key_exists(key:key)){
exit(0);
}
key2 = "SOFTWARE\Microsoft\.NETFramework\AssemblyFolders\";
foreach item (registry_enum_keys(key:key2))
{
path = registry_get_sz(key:key2 + item, item:"All Assemblies In");
if(path)
{
dllVer = fetch_file_version(sysPath:path, file_name:"system.identitymodel.dll");
if(dllVer)
{
if(version_in_range(version:dllVer, test_version:"4.6", test_version2:"4.7.2611"))
{
report = 'File checked: ' + path + "\system.identitymodel.dll" + '\n' +
'File version: ' + dllVer + '\n' +
'Vulnerable range: 4.6 - 4.7.2611\n' ;
security_message(data:report);
exit(0);
}
}
}
}
exit(0);
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.8 High
AI Score
Confidence
High
0.004 Low
EPSS
Percentile
73.9%