CVE-2021-46320 Other in n/a
Reentrancy in OpenZeppelin initializer functions allows attackers to manipulate contract state during initialization, potentially leading to unauthorized code execution or data modification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-46320?
CVE-2021-46320 is a high-severity vulnerability in n/a, published on 4 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-665
Which versions are affected by CVE-2021-46320?
It affects 1 product.
Products include Openzeppelin Openzeppelin.
How do I fix CVE-2021-46320?
Upgrade to a fixed version.
Is CVE-2021-46320 being exploited?
There is no known exploitation of CVE-2021-46320 in the wild and no public exploit code.