CVE - CVE-2023-39363

CVE-ID
CVE-2023-39363	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). In versions 0.2.15, 0.2.16 and 0.3.0, named re-entrancy locks are allocated incorrectly. Each function using a named re-entrancy lock gets a unique lock regardless of the key, allowing cross-function re-entrancy in contracts compiled with the susceptible versions. A specific set of conditions is required to result in misbehavior of affected contracts, specifically: a `.vy` contract compiled with `vyper` versions `0.2.15`, `0.2.16`, or `0.3.0`; a primary function that utilizes the `@nonreentrant` decorator with a specific `key` and does not strictly follow the check-effects-interaction pattern (i.e. contains an external call to an untrusted party before storage updates); and a secondary function that utilizes the same `key` and would be affected by the improper state caused by the primary function. Version 0.3.1 contains a fix for this issue.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/vyperlang/vyper/pull/2439 URL:https://github.com/vyperlang/vyper/pull/2439 MISC:https://github.com/vyperlang/vyper/pull/2514 URL:https://github.com/vyperlang/vyper/pull/2514 MISC:https://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38 URL:https://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38 MISC:https://hackmd.io/@LlamaRisk/BJzSKHNjn URL:https://hackmd.io/@LlamaRisk/BJzSKHNjn MISC:https://hackmd.io/@vyperlang/HJUgNMhs2 URL:https://hackmd.io/@vyperlang/HJUgNMhs2
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20230728	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20230728)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
This is an record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities.
Search CVE Using Keywords: You can also search by reference using the CVE Reference Maps.
For More Information: CVE Request Web Form (select "Other" from dropdown)