Security Updates for Microsoft .NET core (February 2023)

high Nessus Plugin ID 171545


The Microsoft .NET core installations on the remote host are affected by a remote code execution vulnerability.


A remote code execution vulnerability exists in .NET core 6.0 < 6.0.14 and .NET Core 7.0 < 7.0.3. This vulnerability exists due to how .NET reads debugging symbols, where reading a malicious symbols file may result in remote code execution. An unauthenticated, local attacker can exploit this, to bypass authentication and execute arbitrary commands.

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 Runtime to version 6.0.14 or 7.0.3.

See Also

Plugin Details

Severity: High

ID: 171545

File Name: smb_nt_ms23_feb_dotnet_core.nasl

Version: 1.4

Type: local

Agent: windows

Published: 2/16/2023

Updated: 9/4/2023

Supported Sensors: Frictionless Assessment Agent

Risk Information


Risk Factor: High

Score: 7.4


Risk Factor: High

Base Score: 7.2

Temporal Score: 6

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

CVSS Score Source: CVE-2023-21808


Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:.net_core

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/14/2023

Vulnerability Publication Date: 2/14/2023

Reference Information

CVE: CVE-2023-21808

IAVA: 2023-A-0091-S