Severity: high

Directory Traversal

serve-here

Overview

Affected versions of serve-here resolve relative file paths, resulting in a directory traversal vulnerability. A malicious actor can use this vulnerability to access files outside of the intended directory root, which may result in the disclosure of private files on the vulnerable system.

Proof of Concept:

curl "http://${SERVER_IP}:${SERVER_PORT}/..%2f..%2fetc/passwd"

Remediation

The serve-here package has been deprecated by the author and replaced by @vivaxy/here

To install the replacement package:

npm i @vivaxy/here

Advisory timeline

  1. published

    Advisory published
    Jan 12th, 2018
  2. reported

    Jan 11th, 2018