PT-2021-24346 · Openzeppelin · Openzeppelin Contracts

Chaitinblockchain · Published 2021-12-14 · Updated 2022-12-06 · CVE-2022-39384

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: OpenZeppelin Contracts versions 3.2.0 through 4.4.0

Description: The issue concerns initializer functions that are invoked separate from contract creation, such as minimal proxies, which may be reentered if they make an untrusted non-view external call. Normally, once an initializer has finished running, it can never be re-executed. However, an exception for multiple inheritance made reentrancy possible, breaking the expectation of a single execution. The impact is believed to be minor since upgradeable proxies are commonly initialized with contract creation, where reentrancy is not feasible.

Recommendations: For versions 3.2.0 through 4.4.0, upgrade to version 4.4.1 to resolve the issue. As a temporary workaround, avoid untrusted external calls during initialization.

Exploit

Fix

Improper Initialization

Weakness Enumeration

CWE-665

Related Identifiers

CVE-2022-39384

GHSA-88G8-F5MF-F5RJ

GHSA-9C22-PWXW-P6HX

Affected Products

Openzeppelin Contracts

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39384.json · Exploit
• https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3006 · Patch
• https://osv.dev/vulnerability/CVE-2022-39384 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-39384 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-46320 · Security Note
• https://osv.dev/vulnerability/GHSA-88g8-f5mf-f5rj · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9c22-pwxw-p6hx · Vendor Advisory
• https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-9c22-pwxw-p6hx · Note
• https://github.com/OpenZeppelin/openzeppelin-contracts · Note
• https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.4.1 · Note
• https://t.me/cvenotify/37097 · Telegram Post