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Remote Code Execution (RCE) Affecting microsoft.netcore.app package, versions [,2.1.20) [3.0.0,3.1.6)

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 84.07% (99th percentile)
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NVD
7.8 high
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Red Hat
8.8 high

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  • Snyk ID SNYK-DOTNET-MICROSOFTNETCOREAPP-584431
  • published 15 Jul 2020
  • disclosed 14 Jul 2020
  • credit Oleksandr Mirosh from Micro Focus Fortify
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Introduced: 14 Jul 2020

CVE-2020-1147 Open this link in a new tab
CWE-94 Open this link in a new tab

How to fix?

Upgrade Microsoft.NETCore.App to version 2.1.20, 3.1.6 or higher.

Overview

Microsoft.NETCore.App is a set of .NET API's that are included in the default .NET Core application model.

Affected versions of this package are vulnerable to Remote Code Execution (RCE). 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. To exploit this vulnerability, an attacker could upload a specially crafted document to a server utilizing an affected product to process content.