CVE-2023-23940 — Insufficient Verification of Data Authenticity in Contracts

CWE-345 — Insufficient Verification of Data AuthenticityCWE-347 — Improper Verification of Cryptographic Signature4 documents3 sources
Severity
5.3MEDIUMNVD
EPSS
0.1%
top 82.31%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Openzeppelin ContractsOpenzeppelin Cairo-contracts
Timeline
PublishedFeb 3

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…

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:NExploitability: 1.6 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5openzeppelin/cairo-contracts>= 0.2.0, < 0.6.1
▶NVDopenzeppelin/contracts0.2.0 — 0.6.1

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
OSV
CVE-2023-23940: OpenZeppelin Contracts for Cairo is a library for secure smart contract development written in Cairo for StarkNet, a decentralized ZK Rollup↗2023-02-03
▶
GHSA
OpenZeppelin Contracts contains Improper Verification of Cryptographic Signature↗2023-02-02
▶
OSV
OpenZeppelin Contracts contains Improper Verification of Cryptographic Signature↗2023-02-02
▶