CVE-2021-46320
At a glance
- Source
- NVD
- EPSS
- EPSS 1.22 % · percentile 69 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mitre
- NVD status
- Modified
Description
In OpenZeppelin <=v4.4.0, 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, breaking the expectation that there is a single execution.
Weaknesses (CWE)
- CWE-665 — Improper Initialization
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-88g8-f5mf-f5rj — Improper Initialization in OpenZeppelin
- GHSA-9c22-pwxw-p6hx — OpenZeppelin Contracts initializer reentrancy may lead to double initialization
European references
- ENISA EUVD · EUVD-2022-0912
- GCVE · GCVE-0-2021-46320
Affected configurations (NVD CPE)
cpe:2.3:a:openzeppelin:openzeppelin:*:*:*:*:*:*:*:*≥ 3.2.0 ≤ 4.4.0
Affected products
| Product | Versions |
|---|---|
| affected n/a |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |