CVE-2021-46320
Last modified
CVE-2021-46320 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.17% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openzeppelin | Openzeppelin | >= 3.2.0, <= 4.4.0 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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