Arbitrary File Overwrite Affecting fstream Open this link in a new tab package, versions <1.0.12

  • Attack Complexity


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  • snyk-id


  • published

    15 May 2019

  • disclosed

    15 May 2019

  • credit

    Max Justicz

How to fix?

Upgrade fstream to version 1.0.12 or higher.


fstream is a package that supports advanced FS Streaming for Node.

Affected versions of this package are vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system and a file that matches the hardlink will overwrite the system's file with the contents of the extracted file.