OpenZeppelin Contracts up to 4.4.0 Contract Creation initialization

Summaryinfo

A vulnerability classified as problematic was found in OpenZeppelin Contracts up to 4.4.0. This vulnerability affects unknown code of the component Contract Creation Handler. Such manipulation leads to initialization. This vulnerability is documented as CVE-2022-39384. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in OpenZeppelin Contracts up to 4.4.0. Affected by this issue is an unknown function of the component Contract Creation Handler. The manipulation with an unknown input leads to a initialization vulnerability. Using CWE to declare the problem leads to CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released 11/05/2022 as GHSA-9c22-pwxw-p6hx. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2022-39384 since 09/02/2022. There are neither technical details nor an exploit publicly available.

Upgrading to version 4.4.1 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• OpenZeppelin

Name

• Contracts

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4.0

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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