Arbitrary Code Execution Affecting yamldotnet package, versions [,5.0.0)


0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High
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NVD
7.8 high

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  • Snyk ID SNYK-DOTNET-YAMLDOTNET-60255
  • published 19 Jul 2018
  • disclosed 13 Jul 2018
  • credit Kurt Boberg

How to fix?

Upgrade yamldotnet to version 5.0.0 or higher.

Overview

yamldotnetprovides low level parsing and emitting of YAML as well as a high level object model similar to XmlDocument.

Affected versions of this package are vulnerable to Arbitrary Code Execution.

The Deserializer.Deserialize() function deserializes user-controlled types and blindly instantiates them. An attacker may send a specually crafted yaml file, which will then execute code in the context of the running process.

References