fkie_cve-2023-39363
Vulnerability from fkie_nvd
Published
2023-08-07 19:15
Modified
2024-11-21 08:15
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
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
security-advisories@github.comhttps://github.com/vyperlang/vyper/pull/2439Patch
security-advisories@github.comhttps://github.com/vyperlang/vyper/pull/2514Patch
security-advisories@github.comhttps://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38Exploit, Patch, Third Party Advisory
security-advisories@github.comhttps://hackmd.io/@LlamaRisk/BJzSKHNjnExploit, Third Party Advisory
security-advisories@github.comhttps://hackmd.io/@vyperlang/HJUgNMhs2Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/vyperlang/vyper/pull/2439Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/vyperlang/vyper/pull/2514Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38Exploit, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://hackmd.io/@LlamaRisk/BJzSKHNjnExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://hackmd.io/@vyperlang/HJUgNMhs2Exploit, Third Party Advisory
Impacted products
Vendor Product Version
vyperlang vyper 0.2.15
vyperlang vyper 0.2.16
vyperlang vyper 0.3.0


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:vyperlang:vyper:0.2.15:*:*:*:*:python:*:*",
                     matchCriteriaId: "D77BED2E-B82A-49C3-A555-04F77E181013",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:vyperlang:vyper:0.2.16:*:*:*:*:python:*:*",
                     matchCriteriaId: "1DF78911-B188-4F6F-8E8A-BF120C425C8F",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:a:vyperlang:vyper:0.3.0:*:*:*:*:python:*:*",
                     matchCriteriaId: "B371A623-7B66-4D86-A8E9-0CBC01AEC1F4",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   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.",
      },
   ],
   id: "CVE-2023-39363",
   lastModified: "2024-11-21T08:15:14.707",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               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",
            },
            exploitabilityScore: 2.2,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
      cvssMetricV40: [
         {
            cvssData: {
               Automatable: "NOT_DEFINED",
               Recovery: "NOT_DEFINED",
               Safety: "NOT_DEFINED",
               attackComplexity: "LOW",
               attackRequirements: "PRESENT",
               attackVector: "NETWORK",
               availabilityRequirement: "NOT_DEFINED",
               baseScore: 9.1,
               baseSeverity: "CRITICAL",
               confidentialityRequirement: "NOT_DEFINED",
               exploitMaturity: "ATTACKED",
               integrityRequirement: "NOT_DEFINED",
               modifiedAttackComplexity: "NOT_DEFINED",
               modifiedAttackRequirements: "NOT_DEFINED",
               modifiedAttackVector: "NOT_DEFINED",
               modifiedPrivilegesRequired: "NOT_DEFINED",
               modifiedSubAvailabilityImpact: "NOT_DEFINED",
               modifiedSubConfidentialityImpact: "NOT_DEFINED",
               modifiedSubIntegrityImpact: "NOT_DEFINED",
               modifiedUserInteraction: "NOT_DEFINED",
               modifiedVulnAvailabilityImpact: "NOT_DEFINED",
               modifiedVulnConfidentialityImpact: "NOT_DEFINED",
               modifiedVulnIntegrityImpact: "NOT_DEFINED",
               privilegesRequired: "NONE",
               providerUrgency: "NOT_DEFINED",
               subAvailabilityImpact: "HIGH",
               subConfidentialityImpact: "NONE",
               subIntegrityImpact: "HIGH",
               userInteraction: "NONE",
               valueDensity: "NOT_DEFINED",
               vectorString: "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
               version: "4.0",
               vulnAvailabilityImpact: "HIGH",
               vulnConfidentialityImpact: "NONE",
               vulnIntegrityImpact: "HIGH",
               vulnerabilityResponseEffort: "NOT_DEFINED",
            },
            source: "security-advisories@github.com",
            type: "Secondary",
         },
      ],
   },
   published: "2023-08-07T19:15:11.873",
   references: [
      {
         source: "security-advisories@github.com",
         tags: [
            "Patch",
         ],
         url: "https://github.com/vyperlang/vyper/pull/2439",
      },
      {
         source: "security-advisories@github.com",
         tags: [
            "Patch",
         ],
         url: "https://github.com/vyperlang/vyper/pull/2514",
      },
      {
         source: "security-advisories@github.com",
         tags: [
            "Exploit",
            "Patch",
            "Third Party Advisory",
         ],
         url: "https://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38",
      },
      {
         source: "security-advisories@github.com",
         tags: [
            "Exploit",
            "Third Party Advisory",
         ],
         url: "https://hackmd.io/@LlamaRisk/BJzSKHNjn",
      },
      {
         source: "security-advisories@github.com",
         tags: [
            "Exploit",
            "Third Party Advisory",
         ],
         url: "https://hackmd.io/@vyperlang/HJUgNMhs2",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
         ],
         url: "https://github.com/vyperlang/vyper/pull/2439",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
         ],
         url: "https://github.com/vyperlang/vyper/pull/2514",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Exploit",
            "Patch",
            "Third Party Advisory",
         ],
         url: "https://github.com/vyperlang/vyper/security/advisories/GHSA-5824-cm3x-3c38",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Exploit",
            "Third Party Advisory",
         ],
         url: "https://hackmd.io/@LlamaRisk/BJzSKHNjn",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Exploit",
            "Third Party Advisory",
         ],
         url: "https://hackmd.io/@vyperlang/HJUgNMhs2",
      },
   ],
   sourceIdentifier: "security-advisories@github.com",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-863",
            },
         ],
         source: "security-advisories@github.com",
         type: "Primary",
      },
   ],
}


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