CVE-2021-41264
UUPSUpgradeable vulnerability in OpenZeppelin Contracts
- State
- Published
- Severity
- 9.8 Critical
- Published
- Nov 12, 2021
- Updated
- Aug 4, 2024
- Reserved
- Sep 15, 2021
Description
OpenZeppelin Contracts is a library for smart contract development. In affected versions upgradeable contracts using `UUPSUpgradeable` may be vulnerable to an attack affecting uninitialized implementation contracts. A fix is included in version 4.3.2 of `@openzeppelin/contracts` and `@openzeppelin/contracts-upgradeable`. For users unable to upgrade; initialize implementation contracts using `UUPSUpgradeable` by invoking the initializer function (usually called `initialize`). An example is provided [in the forum](https://forum.openzeppelin.com/t/security-advisory-initialize-uups-implementation-contracts/15301).
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | GitHub_M |
Weaknesses
- CWE-665 Improper Initialization
Affected Products
| Product | Versions |
|---|---|
openzeppelin-contractsOpenZeppelin |
|
References
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