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CVE-2023-49798— Duplicated execution of subcalls in OpenZeppelin Contracts

Quick assessment

Affected
OpenZeppelin openzeppelin-contracts
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenZeppelin是一个应用软件。一个安全区块链应用的标准。 OpenZeppelin Contracts存在安全漏洞，该漏洞源于使用户无意中遭受重复操作，例如资产转移。

CVSS 5.9 · Medium EPSS 0.54% · P44

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-49798

Vulnerability Information
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Vulnerability Title
Duplicated execution of subcalls in OpenZeppelin Contracts
Source: CVE Program / CVE List V5
Vulnerability Description
OpenZeppelin Contracts is a library for smart contract development. A merge issue when porting the 5.0.1 patch to the 4.9 branch caused a line duplication. In the version of `Multicall.sol` released in `@openzeppelin/contracts@4.9.4` and `@openzeppelin/contracts-upgradeable@4.9.4`, all subcalls are executed twice. Concretely, this exposes a user to unintentionally duplicate operations like asset transfers. The duplicated delegatecall was removed in version 4.9.5. The 4.9.4 version is marked as deprecated. Users are advised to upgrade. There are no known workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
控制流实现总是不正确
Source: CVE Program / CVE List V5
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存在安全漏洞，该漏洞源于使用户无意中遭受重复操作，例如资产转移。
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 = 4.9.4 -

II. Public POCs for CVE-2023-49798

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III. Intelligence Information for CVE-2023-49798

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Vendor Advisories for CVE-2023-49798 (1)

IV. Related Vulnerabilities

Same product: openzeppelin-contracts
Same vendor: OpenZeppelin
Same weakness: CWE-670

V. Comments for CVE-2023-49798

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