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Improper Verification of Cryptographic Signature Affecting starkbank_ecdsa package, versions >=1.0.0 <1.0.1

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High

    Threat Intelligence

    EPSS 0.23% (61st percentile)
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NVD
9.8 critical

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  • Snyk ID SNYK-HEX-STARKBANKECDSA-2940514
  • published 3 Jul 2022
  • disclosed 24 May 2022
  • credit Paul Bottinelli
Report a new vulnerability Found a mistake?

Introduced: 24 May 2022

CVE-2021-43568 Open this link in a new tab
CWE-347 Open this link in a new tab

How to fix?

Upgrade starkbank_ecdsa to version 1.0.1 or higher.

Overview

Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature due to improper implementation of the verify function which fails to check that the signature is non-zero, potentially allowing attackers to forge signatures on arbitrary messages.