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CVE-2021-39167

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CVE-2021-39167

Published: Aug 26, 2021

Modified: Aug 4, 2024

PUBLISHED

CVSS v3.1

10.0

CRITICAL

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.

VendorProductVersions

OpenZeppelin

openzeppelin-contracts

affected
>=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

Weaknesses (CWE)

CWE-269

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

References

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