Security Updates for Microsoft .NET Framework (December 2018)

Critical Nessus Plugin ID 119612

Synopsis

The Microsoft .NET Framework installation on the remote host is affected by multiple vulnerabilities.

Description

The Microsoft .NET Framework installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :

- A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly. An attacker who successfully exploited this vulnerability could take control of an affected system.
An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
(CVE-2018-8540)

- A denial of service vulnerability exists when .NET Framework improperly handles special web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against an .NET Framework web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Framework application. The update addresses the vulnerability by correcting how the .NET Framework web application handles web requests. (CVE-2018-8517)

Solution

Microsoft has released security updates for Microsoft .NET Framework.

See Also

http://www.nessus.org/u?6380ea56

http://www.nessus.org/u?cc71683a

http://www.nessus.org/u?bb77a3a9

http://www.nessus.org/u?387e7480

http://www.nessus.org/u?f183eaa6

http://www.nessus.org/u?1b234efa

http://www.nessus.org/u?a5ab75ee

http://www.nessus.org/u?7b3e08e7

http://www.nessus.org/u?417b4781

http://www.nessus.org/u?8b54dbf3

http://www.nessus.org/u?7a2a924f

http://www.nessus.org/u?24e3688b

http://www.nessus.org/u?379ac7eb

http://www.nessus.org/u?b7367a8b

http://www.nessus.org/u?e5e76310

http://www.nessus.org/u?97b022e8

http://www.nessus.org/u?54221753

http://www.nessus.org/u?0dcb6757

http://www.nessus.org/u?a1f448e1

http://www.nessus.org/u?fb7cea66

http://www.nessus.org/u?71423e93

http://www.nessus.org/u?fc5d46b3

http://www.nessus.org/u?638e3db2

http://www.nessus.org/u?6669e114

Plugin Details

Severity: Critical

ID: 119612

File Name: smb_nt_ms18_dec_dotnet.nasl

Version: 1.4

Type: local

Agent: windows

Published: 2018/12/13

Updated: 2019/02/26

Dependencies: 13855, 51351, 57033, 99364

Risk Information

Risk Factor: Critical

CVSS Score Source: CVE-2018-8540

CVSS v2.0

Base Score: 10

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

CVSS v3.0

Base Score: 9.8

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

Vulnerability Information

CPE: cpe:/a:microsoft:.net_framework

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Patch Publication Date: 2018/12/11

Vulnerability Publication Date: 2018/12/11

Reference Information

CVE: CVE-2018-8517, CVE-2018-8540

MSKB: 4470637, 4470493, 4470492, 4470491, 4470630, 4470639, 4470498, 4471323, 4471321, 4471327, 4471324, 4471329, 4470640, 4470641, 4470500, 4470502, 4470622, 4470623, 4470602, 4470629, 4470600, 4470601, 4470499, 4470638

MSFT: MS18-4470637, MS18-4470493, MS18-4470492, MS18-4470491, MS18-4470630, MS18-4470639, MS18-4470498, MS18-4471323, MS18-4471321, MS18-4471327, MS18-4471324, MS18-4471329, MS18-4470640, MS18-4470641, MS18-4470500, MS18-4470502, MS18-4470622, MS18-4470623, MS18-4470602, MS18-4470629, MS18-4470600, MS18-4470601, MS18-4470499, MS18-4470638