Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openzeppelin | Contracts | >= 3.2.0, < 4.4.1 |
| Openzeppelin | Contracts Upgradeable | >= 3.2.0, < 4.4.1 |
Related Weaknesses (CWE)
References
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3006PatchThird Party Advisory
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-Third Party Advisory
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3006PatchThird Party Advisory
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-Third Party Advisory
FAQ
What is CVE-2022-39384?
CVE-2022-39384 is a vulnerability with a CVSS score of 5.6 (MEDIUM). 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 promin...
How severe is CVE-2022-39384?
CVE-2022-39384 has been rated MEDIUM with a CVSS base score of 5.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-39384?
Check the references section above for vendor advisories and patch information. Affected products include: Openzeppelin Contracts, Openzeppelin Contracts Upgradeable.