Information Disclosure Affecting github.com/binance-chain/tss-lib/ecdsa/keygen package, versions <1.2.0


0.0
high
  • Attack Complexity

    Low

  • Scope

    Changed

  • Confidentiality

    High

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  • snyk-id

    SNYK-GOLANG-GITHUBCOMBINANCECHAINTSSLIBECDSAKEYGEN-567414

  • published

    23 Apr 2020

  • disclosed

    23 Apr 2020

  • credit

    Unknown

How to fix?

Upgrade github.com/binance-chain/tss-lib/ecdsa/keygen to version 1.2.0 or higher.

Overview

github.com/binance-chain/tss-lib/ecdsa/keygen is an ECDSA keygen module for tss-lib

Affected versions of this package are vulnerable to Information Disclosure. It is possible for a malicious actor to generate bad parameters h1,h2 that are shared with other parties during keygen. This allowed such an actor to compromise signing rounds and potentially expose the private data of other parties.

Existing save data for signing groups that have already completed keygen should be considered secure if the parties were trusted at the time of keygen. This vulnerability could only have been exploited when a malicious actor with prior knowledge of this vulnerability had participated in keygen.