CVE-2023-23940 – openzeppelin-cairo-contracts

Package

Manager: pip
Name: openzeppelin-cairo-contracts
Vulnerable Version: >=0.2.0 <0.6.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 7e-05 pctl0.00442

Details

OpenZeppelin Contracts contains Improper Verification of Cryptographic Signature ### Cause `is_valid_eth_signature` is missing a call to `finalize_keccak` after calling `verify_eth_signature`. ### Impact 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. ### Risk In order to exploit this vulnerability, it is required to control a sequencer or prover since they're the ones executing the hints, being able to inject incorrect keccak results. Today StarkWare is the only party running both a prover or a sequencer, greatly reducing the risk of exploit. ### Patches The issue has been patched in 0.6.1. ### For more information If you have any questions or comments about this advisory: * Open an issue in [the Contracts for Cairo repository](https://github.com/OpenZeppelin/cairo-contracts/issues/new/choose) * Email us at [security@openzeppelin.com](mailto:security@openzeppelin.com)

Metadata

Created: 2023-02-02T16:59:46Z
Modified: 2024-10-07T21:19:33Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-626q-v9j4-mcp4/GHSA-626q-v9j4-mcp4.json
CWE IDs: ["CWE-345", "CWE-347"]
Alternative ID: GHSA-626q-v9j4-mcp4
Finding: F204
Auto approve: 1