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Authentication Bypass Affecting github.com/cosmos/ethermint/rpc/namespaces/eth package, versions <0.4.1

0.0
medium

Snyk CVSS

    Attack Complexity High
    User Interaction Required
    Confidentiality High

    Threat Intelligence

    EPSS 0.08% (35th percentile)
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NVD
7.5 high

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  • Snyk ID SNYK-GOLANG-GITHUBCOMCOSMOSETHERMINTRPCNAMESPACESETH-1070796
  • published 9 Feb 2021
  • disclosed 9 Feb 2021
  • credit Unknown
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Introduced: 9 Feb 2021

CVE-2021-25834 Open this link in a new tab
CWE-287 Open this link in a new tab

How to fix?

Upgrade github.com/cosmos/ethermint/rpc/namespaces/eth to version 0.4.1 or higher.

Overview

github.com/cosmos/ethermint/rpc/namespaces/eth 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.