// For flags

CVE-2021-39167

TimelockController vulnerability in OpenZeppelin Contracts

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

OpenZepplin es una biblioteca para el desarrollo de contratos inteligentes. En las versiones afectadas, una vulnerabilidad en TimelockController permitía a un actor con el rol de ejecutor escalar privilegios. Más adelante se divulgarán más detalles sobre la vulnerabilidad. Como solución alternativa, revoque el rol de ejecutor de las cuentas que no estén estrictamente bajo el control del equipo. Recomendamos revocar todos los ejecutores que no sean también proponentes. Cuando aplique esta mitigación, asegúrese de que queda al menos un proponente y un ejecutor.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-08-16 CVE Reserved
  • 2021-08-26 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-12-17 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-269: Improper Privilege Management
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Openzeppelin
Search vendor "Openzeppelin"
 Contracts
Search vendor "Openzeppelin" for product "Contracts"
 >= 3.3.0 < 3.4.2
Search vendor "Openzeppelin" for product "Contracts" and version " >= 3.3.0 < 3.4.2"
node.js
Affected
Openzeppelin
Search vendor "Openzeppelin"
 Contracts
Search vendor "Openzeppelin" for product "Contracts"
 >= 4.0.0 < 4.3.1
Search vendor "Openzeppelin" for product "Contracts" and version " >= 4.0.0 < 4.3.1"
node.js
Affected