Security Update for .NET Core SDK (February 2023)

high Nessus Plugin ID 171599

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Synopsis

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

Description

A remote code execution vulnerability exists in .NET Core SDK 6.0 < 6.0.14 and .NET Core SDK 7.0 < 7.0.3. This vulnerability exists due to how .NET reads debugging symbols, where reading a malicious symbols file may result in remote code execution. An unauthenticated, local attacker can exploit this, to bypass authentication and execute arbitrary commands.

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

Solution

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

Plugin Details

Severity: High

ID: 171599

File Name: smb_nt_ms23_feb_dotnet_core_sdk.nasl

Version: 1.4

Type: local

Agent: windows

Family: Windows

Published: 2/17/2023

Updated: 9/4/2023

Configuration: Enable paranoid mode

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6

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

CVSS Score Source: CVE-2023-21808

CVSS v3

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: Settings/ParanoidReport, installed_sw/.NET Core SDK Windows

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/14/2023

Vulnerability Publication Date: 2/14/2023

Reference Information

CVE: CVE-2023-21808

IAVA: 2023-A-0091-S

Detections

Analytics