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Always-Incorrect Control Flow Implementation Affecting vyper package, versions [0,0.3.4)

0.0
high

Snyk CVSS

    Attack Complexity Low
    Integrity High

    Threat Intelligence

    EPSS 0.06% (26th percentile)
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NVD
7.5 high

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  • Snyk ID SNYK-PYTHON-VYPER-2859769
  • published 7 Jun 2022
  • disclosed 6 Jun 2022
  • credit Unknown
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Introduced: 6 Jun 2022

CVE-2022-29255 Open this link in a new tab
CWE-670 Open this link in a new tab

How to fix?

Upgrade vyper to version 0.3.4 or higher.

Overview

vyper is a Pythonic Smart Contract Language for the EVM.

Affected versions of this package are vulnerable to Always-Incorrect Control Flow Implementation when calling an external contract with no return value. As a result, the contract address will be evaluated twice.

References