Improper Verification of Cryptographic Signature Affecting github.com/biscuit-auth/biscuit-go Open this link in a new tab package, versions <2.0.0


0.0
critical
  • Attack Complexity

    Low

  • Confidentiality

    High

  • Integrity

    High

  • Availability

    High

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  • snyk-id

    SNYK-GOLANG-GITHUBCOMBISCUITAUTHBISCUITGO-2869622

  • published

    14 Jun 2022

  • disclosed

    14 Jun 2022

  • credit

    Goichiro Hanaoka, Kazuo Ohta, Yusuke Sakai, Bagus Santoso, Kaoru Takemure, and Yunlei Zhao

How to fix?

Upgrade github.com/biscuit-auth/biscuit-go to version 2.0.0 or higher.

Overview

Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature which can allow an attacker to create a token with any access level. This is due to a way to forge valid Γ-signatures, an algorithm that is used in the Biscuit specification version 1.