Security Update for .NET Core (May 2021) (macOS)

high Nessus Plugin ID 149472

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Synopsis

The remote macOS host is affected by a .NET Core privilege elevation vulnerability.

Description

The Microsoft .NET Core installation on the remote host is version 3.1.x prior to 3.1.15 or 5.x prior to 5.0.6. It is, therefore, affected by a privilege elevation vulnerability. An authenticated, local attacker can exploit this to elevate their privileges.

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, remove vulnerable packages and refer to vendor advisory.

Plugin Details

Severity: High

ID: 149472

File Name: macos_ms21_may_dotnet_core.nasl

Version: 1.6

Type: local

Agent: macosx

Family: MacOS X Local Security Checks

Published: 5/13/2021

Updated: 6/11/2021

Supported Sensors: Nessus Agent

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS Score Source: CVE-2021-31204

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:.net_core

Required KB Items: installed_sw/.NET Core MacOS

Exploit Ease: No known exploits are available

Patch Publication Date: 5/11/2021

Vulnerability Publication Date: 5/11/2021

Reference Information

CVE: CVE-2021-31204

IAVA: 2021-A-0218-S