Always-Incorrect Control Flow Implementation Affecting @openzeppelin/contracts-upgradeable package, versions >=4.9.4 <4.9.5


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.05% (22nd percentile)

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  • Snyk ID SNYK-JS-OPENZEPPELINCONTRACTSUPGRADEABLE-6114712
  • published 10 Dec 2023
  • disclosed 9 Dec 2023
  • credit Unknown

How to fix?

Upgrade @openzeppelin/contracts-upgradeable to version 4.9.5 or higher.

Overview

@openzeppelin/contracts-upgradeable is a Secure Smart Contract library for Solidity.

Affected versions of this package are vulnerable to Always-Incorrect Control Flow Implementation due to an issue with the Multicall.sol implementation. An attacker can cause unintended duplicate operations, such as asset transfers, by exploiting the fact that all subcalls are executed twice.

References

CVSS Scores

version 3.1
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Snyk

Recommended
5.9 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    High
  • Availability (A)
    None
Expand this section

NVD

7.5 high