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CVE-2023-23940— OpenZeppelin Contracts for Cairo is vulnerable to signature validation bypass

Quick assessment

Affected
OpenZeppelin cairo-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 for Cairo 存在数据伪造问题漏洞，该漏洞源于 is_valid_eth_signature 在调用 verify_eth_signature 后缺少对 finalize_keccak 的调用。

CVSS 6.4 · Medium EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2023-23940

Vulnerability Information
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Vulnerability Title
OpenZeppelin Contracts for Cairo is vulnerable to signature validation bypass
Source: CVE Program / CVE List V5
Vulnerability Description
OpenZeppelin Contracts for Cairo is a library for secure smart contract development written in Cairo for StarkNet, a decentralized ZK Rollup. `is_valid_eth_signature` is missing a call to `finalize_keccak` after calling `verify_eth_signature`. As a result, any contract using `is_valid_eth_signature` from the account library (such as the `EthAccount` preset) is vulnerable to a malicious sequencer. Specifically, the malicious sequencer would be able to bypass signature validation to impersonate an instance of these accounts. The issue has been patched in 0.6.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenZeppelin 数据伪造问题漏洞
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 for Cairo 存在数据伪造问题漏洞，该漏洞源于 is_valid_eth_signature 在调用 verify_eth_signature 后缺少对 finalize_keccak 的调用。
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 cairo-contracts >= 0.2.0, < 0.6.1 -

II. Public POCs for CVE-2023-23940

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III. Intelligence Information for CVE-2023-23940

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Patches & Fixes for CVE-2023-23940 (1)

Vendor Advisories for CVE-2023-23940 (1)

IV. Related Vulnerabilities

Same product: cairo-contracts
Same vendor: OpenZeppelin
Same weakness: CWE-347

V. Comments for CVE-2023-23940

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