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Critical · 10.0 CVE-2021-39167 EUVD-2021-1700GHSA-fg47-3c2x-m2wr

TimelockController vulnerability in OpenZeppelin Contracts

Published Aug 26, 2021 · Updated Aug 4, 2024 · Assigned by GitHub_M

Description

OpenZepplin is a library for smart contract development. In affected versions a vulnerability in TimelockController allowed an actor with the executor role to escalate privileges. Further details about the vulnerability will be disclosed at a later date. As a workaround revoke the executor role from accounts not strictly under the team's control. We recommend revoking all executors that are not also proposers. When applying this mitigation, ensure there is at least one proposer and executor remaining.

Affected products

VendorProductAffectedFixed
OpenZeppelin openzeppelin-contracts >=4.0.0, < 4.3.1, >=3.3.0, < 3.4.2, >= 3.3.0-solc-0.7, < 3.4.2-solc-0.7 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @openzeppelin/contracts >= 4.0.0, < 4.3.1 4.3.1 GHSA-fg47-3c2x-m2wr
npm @openzeppelin/contracts >= 3.3.0, < 3.4.2 3.4.2 GHSA-fg47-3c2x-m2wr

References