CVE-2021-39167
CVE-2021-39167 · TimelockController vulnerability in OpenZeppelin Contracts
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 10.0 · Critical · EPSS 1.6% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
openzeppelin-contracts
- Versions
- >=4.0.0, < 4.3.1: Affected
- >=3.3.0, < 3.4.2: Affected
- >= 3.3.0-solc-0.7, < 3.4.2-solc-0.7: Affected
No fix published
@openzeppelin/contracts npm
- Affected ranges
- SEMVER: ≥ 4.0.0, < 4.3.1
Update to 4.3.1
@openzeppelin/contracts npm
- Affected ranges
- SEMVER: ≥ 3.3.0, < 3.4.2
Update to 3.4.2
Original sources
- https://github.com/OpenZeppelin/openzeppelin-contracts/commit/cec4f2ef57495d8b1742d62846da212515d99dd5
- https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md#431
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-fg47-3c2x-m2wr
- https://nvd.nist.gov/vuln/detail/CVE-2021-39167