Security Updates for Microsoft .NET Framework (July 2020)

high Nessus Plugin ID 138464
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The Microsoft .NET Framework installation on the remote host is missing a security update.

Description

The Microsoft .NET Framework installation on the remote host is missing a security update. It is, therefore, affected by the following vulnerability :

- A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the process responsible for deserialization of the XML content. (CVE-2020-1147)

Solution

Microsoft has released security updates for Microsoft .NET Framework.

See Also

http://www.nessus.org/u?e394aff7

https://support.microsoft.com/en-us/help/4566469/kb4566469

http://www.nessus.org/u?b2aadf5b

http://www.nessus.org/u?78bdeafd

https://support.microsoft.com/en-us/help/4566468/kb4566468

https://support.microsoft.com/en-us/help/4566519/kb4566519

https://support.microsoft.com/en-us/help/4566466/kb4566466

https://support.microsoft.com/en-us/help/4566517/kb4566517

http://www.nessus.org/u?d0366a03

http://www.nessus.org/u?777905a0

http://www.nessus.org/u?e6e77e0f

https://support.microsoft.com/en-us/help/4566518/kb4566518

http://www.nessus.org/u?625a0a16

http://www.nessus.org/u?822e3925

https://support.microsoft.com/en-us/help/4566520/kb4566520

http://www.nessus.org/u?8bc61313

https://support.microsoft.com/en-us/help/4566467/kb4566467

http://www.nessus.org/u?5a5f0660

http://www.nessus.org/u?e394aff7

https://support.microsoft.com/en-us/help/4566469/kb4566469

http://www.nessus.org/u?b2aadf5b

http://www.nessus.org/u?78bdeafd

https://support.microsoft.com/en-us/help/4566468/kb4566468

https://support.microsoft.com/en-us/help/4566519/kb4566519

https://support.microsoft.com/en-us/help/4566466/kb4566466

https://support.microsoft.com/en-us/help/4566517/kb4566517

http://www.nessus.org/u?d0366a03

http://www.nessus.org/u?777905a0

Plugin Details

Severity: High

ID: 138464

File Name: smb_nt_ms20_jul_dotnet.nasl

Version: 1.10

Type: local

Agent: windows

Published: 7/14/2020

Updated: 1/21/2022

Dependencies: smb_check_dotnet_rollup.nasl, smb_hotfixes.nasl, ms_bulletin_checks_possible.nasl, microsoft_net_framework_installed.nasl

Risk Information

CVSS Score Source: CVE-2020-1147

VPR

Risk Factor: Critical

Score: 9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/a:microsoft:.net_framework

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/14/2020

Vulnerability Publication Date: 7/14/2020

Exploitable With

Metasploit (SharePoint DataSet / DataTable Deserialization)

Reference Information

CVE: CVE-2020-1147

IAVA: 2020-A-0305-S

MSKB: 4565489, 4565508, 4565511, 4565513, 4565627, 4565628, 4565630, 4565631, 4565633, 4566466, 4566467, 4566468, 4566469, 4566516, 4566517, 4566518, 4566519, 4566520

MSFT: MS20-4565489, MS20-4565508, MS20-4565511, MS20-4565513, MS20-4565627, MS20-4565628, MS20-4565630, MS20-4565631, MS20-4565633, MS20-4566466, MS20-4566467, MS20-4566468, MS20-4566469, MS20-4566516, MS20-4566517, MS20-4566518, MS20-4566519, MS20-4566520