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


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.14% (50th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMBINANCECHAINTSSLIBECDSARESHARING-567415
  • published23 Apr 2020
  • disclosed23 Apr 2020
  • creditUnknown

Introduced: 23 Apr 2020

CVE-2020-12118  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

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

Overview

github.com/binance-chain/tss-lib/ecdsa/resharing is an ECDSA key resharing 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.

CVSS Scores

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