Security Update for Microsoft .NET 7 Core (October 2023)

high Nessus Plugin ID 183024

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Synopsis

The remote Windows host is affected by a .NET Core vulnerability

Description

The version of Microsoft .NET 7 Core installed on the remote host is prior to 7.0.12. It is, therefore, affected by multiple vulnerabilities as referenced in the 2023_Oct_10 advisory.

- A vulnerability exists in the ASP.NET Core Kestrel web server where a malicious client may flood the server with specially crafted HTTP/2 requests, causing denial of service. (CVE-2023-44487)

- A null pointer vulnerability exists in MsQuic.dll which may lead to Denial of Service. This issue only affects Windows systems. (CVE-2023-38171)

- A memory leak vulnerability exists in MsQuic.dll which may lead to Denial of Service. This issue only affects Windows systems. (CVE-2023-36435)

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

Solution

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

Plugin Details

Severity: High

ID: 183024

File Name: smb_nt_ms23_oct_dotnet_core_7.nasl

Version: 1.6

Type: local

Agent: windows

Family: Windows

Published: 10/13/2023

Updated: 2/23/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.4

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

CVSS Score Source: CVE-2023-44487

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/10/2023

Vulnerability Publication Date: 10/10/2023

CISA Known Exploited Vulnerability Due Dates: 10/31/2023

Reference Information

CVE: CVE-2023-36435, CVE-2023-38171, CVE-2023-44487

IAVA: 2023-A-0543-S

IAVB: 2023-B-0083-S

Detections

Analytics