Authentication Bypass Affecting Open this link in a new tab package, versions <0.4.1

  • Attack Complexity


  • User Interaction


  • Confidentiality


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  • snyk-id


  • published

    9 Feb 2021

  • disclosed

    9 Feb 2021

  • credit


How to fix?

Upgrade to version 0.4.1 or higher.

Overview is an a scalable, high-throughput Proof-of-Stake blockchain that is fully compatible and interoperable with Ethereum.

Affected versions of this package are vulnerable to Authentication Bypass. Signaturecheck uses the nonce field of the transaction itself, so transactions larger than the current cached nonce can still pass it. Thus, if the victim sends a very large nonce transaction, the attacker can replay the transaction through the application.