Security Update for .NET Core SDK (November 2023)

critical Nessus Plugin ID 185958


The remote Windows host is affected by multiple Microsoft .NET Core SDK vulnerabilities.


The version of Microsoft .NET Core SDK installed on the remote host is 6.0.x prior to 6.0.125, 6.0.x prior to 6.0.320, 6.0.x prior to 6.0.417, 7.0.x prior to 7.0.114, 7.0.x prior to 7.0.311, 7.0.x prior to 7.0.404, or 8.0.x to 8.0.100. It is, therefore, affected by multiple vulnerabilities, as follows:

- An elevation of privilege vulnerability exists in .NET where untrusted URIs provided to System.Net.WebRequest.Create can be used to inject arbitrary commands to backend FTP servers.
- A security feature bypass vulnerability exists in ASP.NET where an unauthenticated user is able to bypass validation on Blazor server forms which could trigger unintended actions.(CVE-2023-36558)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Update .NET Core SDK, remove vulnerable packages and refer to 5032883 and 5032884.

See Also

Plugin Details

Severity: Critical

ID: 185958

File Name: smb_nt_ms23_nov_dotnet_core_sdk.nasl

Version: 1.2

Type: local

Agent: windows

Family: Windows

Published: 11/17/2023

Updated: 11/22/2023

Configuration: Enable paranoid mode

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2023-36049


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:.net_core

Required KB Items: installed_sw/.NET Core SDK Windows, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 11/14/2023

Vulnerability Publication Date: 11/14/2023

Reference Information

CVE: CVE-2023-36049, CVE-2023-36558