Rosetta-flash jsonp vulnerability

Affecting hapi package, versions < 6.1.0

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Overview

This description taken from the pull request provided by Patrick Kettner.

tl:dr - someone created a alphanum only swf converter, which means that they can in theory use it as a callback at a JSONP endpoint, and as a result, send data across domains.

Prepending callbacks with an empty inline comment breaks the flash parser, and prevents the issue. This is a fairly common solution currently being implemented by Google, Facebook, and GitHub.

Source: Node Security Project

Details

Background from the vulnerabilty finder

Remediation

Upgrade to the latest version of hapi.js

References

Snyk patch available for versions:

CVSS Score

7.4
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    None
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Credit
Michele Spagnuolo
CVE
CVE-2014-4671
CWE
CWE-942
Snyk ID
npm:hapi:20140708-1
Disclosed
08 Jul, 2014
Published
08 Jul, 2014