{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-39363", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2023-07-28T13:26:46.480Z", "datePublished": "2023-08-07T18:40:25.615Z", "dateUpdated": "2024-08-02T18:10:20.307Z"}, "containers": {"cna": {"title": "Vyper incorrectly allocated named re-entrancy locks", "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38"}, {"name": "https://github.com/vyperlang/vyper/pull/2439", "tags": ["x_refsource_MISC"], "url": "https://github.com/vyperlang/vyper/pull/2439"}, {"name": "https://github.com/vyperlang/vyper/pull/2514", "tags": ["x_refsource_MISC"], "url": "https://github.com/vyperlang/vyper/pull/2514"}, {"name": "https://hackmd.io/@LlamaRisk/BJzSKHNjn", "tags": ["x_refsource_MISC"], "url": "https://hackmd.io/@LlamaRisk/BJzSKHNjn"}, {"name": "https://hackmd.io/@vyperlang/HJUgNMhs2", "tags": ["x_refsource_MISC"], "url": "https://hackmd.io/@vyperlang/HJUgNMhs2"}], "affected": [{"vendor": "vyperlang", "product": "vyper", "versions": [{"version": "= 0.2.15", "status": "affected"}, {"version": "= 0.2.16", "status": "affected"}, {"version": "= 0.3.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-09-18T20:17:21.290Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-5824-cm3x-3c38", "discovery": "UNKNOWN"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T18:10:20.307Z"}, "title": "CVE Program Container", "references": [{"name": "https://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38", "tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38"}, {"name": "https://github.com/vyperlang/vyper/pull/2439", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/vyperlang/vyper/pull/2439"}, {"name": "https://github.com/vyperlang/vyper/pull/2514", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/vyperlang/vyper/pull/2514"}, {"name": "https://hackmd.io/@LlamaRisk/BJzSKHNjn", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackmd.io/@LlamaRisk/BJzSKHNjn"}, {"name": "https://hackmd.io/@vyperlang/HJUgNMhs2", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackmd.io/@vyperlang/HJUgNMhs2"}]}]}}

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