Security Update for Microsoft .NET Core (January 2025)

high Nessus Plugin ID 214130

Synopsis

The remote Windows host is affected by a .NET Core vulnerability

Description

The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the vendor advisory.

- .NET Remote Code Execution Vulnerability (CVE-2025-21171)

- .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)

- .NET Elevation of Privilege Vulnerability (CVE-2025-21173)

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

Solution

Update .NET Core, remove vulnerable packages and refer to vendor advisory.

See Also

https://dotnet.microsoft.com/en-us/download/dotnet/9.0

http://www.nessus.org/u?0b77d4b6

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21171

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21172

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21173

https://support.microsoft.com/help/5050526

Plugin Details

Severity: High

ID: 214130

File Name: smb_nt_ms25_jan_dotnet_core.nasl

Version: 1.1

Type: local

Agent: windows

Family: Windows

Published: 1/14/2025

Updated: 1/14/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2025-21172

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/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 Windows

Exploit Ease: No known exploits are available

Patch Publication Date: 1/14/2025

Vulnerability Publication Date: 1/14/2025

Reference Information

CVE: CVE-2025-21171, CVE-2025-21172, CVE-2025-21173