Validation Bypass Affecting paypal-ipn package, versions <3.0.0


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.15% (52nd percentile)

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  • Snyk ID npm:paypal-ipn:20141203
  • published 3 Dec 2014
  • disclosed 3 Dec 2014
  • credit Martin Angelov

How to fix?

Upgrade to version 3.0.0 or greater.

Overview

paypal-ipn uses the test_ipn parameter (which is set by the PayPal IPN simulator) to determine if it should use the production PayPal site or the sandbox.

"With a bit of time, an attacker could craft a request using the simulator that would fool any application which does not explicitly check for test_ipn in production." [1]

Source: Node Security Project

CVSS Scores

version 3.1
Expand this section

Snyk

6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    None