Authentication Bypass Affecting system.text.encodings.web Open this link in a new tab package, versions [,4.0.1) [4.3,4.3.1)


0.0
medium
  • Attack Complexity

    Low

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  • snyk-id

    SNYK-DOTNET-SYSTEMTEXTENCODINGSWEB-60096

  • published

    12 May 2017

  • disclosed

    12 May 2017

  • credit

    Mikhail Shcherbakov

How to fix?

Upgrade System.Text.Encodings.Web to version 4.0.1, 4.3.1 or higher.

Overview

System.Text.Encodings.Web provides types for encoding and escaping strings for use in JavaScript, HyperText Markup Language (HTML), and uniform resource locators (URL).

Affected versions of this package are vulnerable to Authentication Bypass attacks. The ASP.NET Core fails to properly sanitize the Web Request Handler component, allowing an attacker to spoof web requests and bypass authentication.