CVE-2022-39384 OpenZeppelin Contracts initializer reentrancy may lead to double initialization

2022-11-0400:00:00

CWE-665

GitHub_M

www.cve.org

openzeppelin contracts

smart contract

reentrancy

upgrade

initialization

security issue

5.6 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

6 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

50.1%

JSON

OpenZeppelin Contracts is a library for secure smart contract development. Before version 4.4.1 but after 3.2.0, initializer functions that are invoked separate from contract creation (the most prominent example being minimal proxies) may be reentered if they make an untrusted non-view external call. Once an initializer has finished running it can never be re-executed. However, an exception put in place to support multiple inheritance made reentrancy possible in the scenario described above, breaking the expectation that there is a single execution. Note that upgradeable proxies are commonly initialized together with contract creation, where reentrancy is not feasible, so the impact of this issue is believed to be minor. This issue has been patched, please upgrade to version 4.4.1. As a workaround, avoid untrusted external calls during initialization.

CNA Affected

[
  {
    "vendor": "OpenZeppelin",
    "product": "openzeppelin-contracts",
    "versions": [
      {
        "version": ">= 3.2.0, < 4.4.1",
        "status": "affected"
      }
    ]
  }
]