CVE-2023-40014— OpenZeppelin Contracts's ERC2771Context with custom forwarder may lead to zero-valued _msgSender
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I. Basic Information for CVE-2023-40014
Vulnerability Information
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Vulnerability Title
OpenZeppelin Contracts's ERC2771Context with custom forwarder may lead to zero-valued _msgSender
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenZeppelin Contracts is a library for secure smart contract development. Starting in version 4.0.0 and prior to version 4.9.3, contracts using `ERC2771Context` along with a custom trusted forwarder may see `_msgSender` return `address(0)` in calls that originate from the forwarder with calldata shorter than 20 bytes. This combination of circumstances does not appear to be common, in particular it is not the case for `MinimalForwarder` from OpenZeppelin Contracts, or any deployed forwarder the team is aware of, given that the signer address is appended to all calls that originate from these forwarders. The problem has been patched in v4.9.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对输出编码和转义不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenZeppelin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenZeppelin是一个应用软件。一个安全区块链应用的标准。 OpenZeppelin Contracts 4.0.0版本至4.9.3之前版本存在安全漏洞，该漏洞源于签名者地址被附加到源自转发器的所有调用中。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| OpenZeppelin | openzeppelin-contracts | >= 4.0.0, < 4.9.3 | - |
II. Public POCs for CVE-2023-40014
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4484x_refsource_MISC
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4481x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2023-40014
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V. Comments for CVE-2023-40014
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