Privilege Escalation Affecting @openzeppelin/contracts-upgradeable package, versions >=4.0.0-beta.0 <4.3.1 <3.4.2
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Test your applications- Snyk ID SNYK-JS-OPENZEPPELINCONTRACTSUPGRADEABLE-1570169
- published 27 Aug 2021
- disclosed 27 Aug 2021
- credit Unknown
How to fix?
Upgrade @openzeppelin/contracts-upgradeable to version 4.3.1, 3.4.2 or higher.
Overview
@openzeppelin/contracts-upgradeable is a Secure Smart Contract library for Solidity.
Affected versions of this package are vulnerable to Privilege Escalation. A vulnerability in TimelockController allowed an actor with the executor role to escalate privileges.
As a workaround, revoke the executor role from accounts not strictly under the team's control. It is recommended to revoke all executors that are not also proposers. When applying this mitigation, ensure there is at least one proposer and executor remaining.