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CVE-2023-42441

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Date: September 18, 2023

Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). Starting in version 0.2.9 and prior to version 0.3.10, locks of the type `@nonreentrant("")` or `@nonreentrant('')` do not produce reentrancy checks at runtime. This issue is fixed in version 0.3.10. As a workaround, ensure the lock name is a non-empty string.

Language: Python

Severity Score

Related Resources (7)

https://nvd.nist.gov/vuln/detail/CVE-2023-42441
https://github.com/vyperlang/vyper/pull/3605
https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2023-305.yaml
https://github.com/vyperlang/vyper/commit/0b740280c1e3c5528a20d47b29831948ddcc6d83
https://github.com/vyperlang/vyper/security/advisories/GHSA-3hg2-r75x-g69m
https://github.com/vyperlang/vyper
https://www.mend.io/vulnerability-database/CVE-2023-42441

Severity Score

Weakness Type (CWE)

Deadlock

CWE-833

Improper Locking

CWE-667

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): LOW
Availability (A): NONE

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