Security Updates for Microsoft ASP.NET Core (December 2021)

high Nessus Plugin ID 156227

Synopsis

The Microsoft ASP.NET Core installations on the remote host are missing a security update.

Description

The Microsoft ASP.NET Core installations on the remote host are missing a security update. It is, therefore, affected by an elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.

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

Solution

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

See Also

https://github.com/dotnet/announcements/issues/206

https://github.com/dotnet/aspnetcore/issues/39028

Plugin Details

Severity: High

ID: 156227

File Name: smb_nt_ms21_dec_aspdotnet_core.nasl

Version: 1.5

Type: local

Agent: windows

Family: Windows

Published: 12/21/2021

Updated: 4/11/2022

Configuration: Enable thorough checks

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2021-43877

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:asp.net_core

Required KB Items: installed_sw/ASP .NET Core Windows

Exploit Ease: No known exploits are available

Patch Publication Date: 12/14/2021

Vulnerability Publication Date: 12/14/2021

Reference Information

CVE: CVE-2021-43877

IAVA: 2021-A-0581-S