by Kastro
Paper/Archive/CVE-2021-39168

CVE-2021-39168

OpenZeppelin openzeppelin-contracts-upgradeable — TimelockController vulnerability in OpenZeppelin Contracts

EPSS 2%CVSS 10.0
critical.is priorityof 100
45
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 75.7.757 × 2015.1No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
openzeppelin-contracts-upgradeable>=4.0.0, < 4.3.1–CNA
openzeppelin-contracts-upgradeable>=3.3.0, < 3.4.2–CNA
openzeppelin-contracts-upgradeable>= 3.3.0-solc-0.7, < 3.4.2-solc-0.7–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgithub.com/OpenZeppelin/openzeppelin-contracts-upgradeable/security/advisories/GHSA-vrw4-w73r-6mm8refgithub.com/OpenZeppelin/openzeppelin-contracts/commit/cec4f2ef57495d8b1742d62846da212515d99dd5refgithub.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md#431