Security Update for .NET Core SDK (July 2020)

high Nessus Plugin ID 138466


The remote Windows host is affected by a .NET Core SDK remote code execution (RCE) vulnerability.


The Microsoft .NET Core SDK installation on the remote host is version 2.1.x < 2.1.516 / 2.1.613 / 2.1.808, or 3.1.x < 3.1.106 / 3.1.302. It is, therefore, affected by a remote code execution vulnerability. It is, therefore, affected by a remote code execution (RCE) vulnerability due to failing to check the source markup of XML file input. An unauthenticated, remote attacker can exploit this, by issuing specially crafted requests to applications that process certain types of XML, to execute arbitrary code in the context of the current user.


Refer to vendor documentation.

See Also

Plugin Details

Severity: High

ID: 138466

File Name: smb_nt_ms20_jul_dotnet_core_sdk.nasl

Version: 1.13

Type: local

Agent: windows

Family: Windows

Published: 7/14/2020

Updated: 4/25/2023

Configuration: Enable paranoid mode

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: High

Score: 8.4


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

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

CVSS Score Source: CVE-2020-1147


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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/14/2020

Vulnerability Publication Date: 7/14/2020

CISA Known Exploited Vulnerability Due Dates: 5/3/2022

Exploitable With

Core Impact

Metasploit (SharePoint DataSet / DataTable Deserialization)

Reference Information

CVE: CVE-2020-1147