fkie_cve-2020-15945
Vulnerability from fkie_nvd
Published
2020-07-24 21:15
Modified
2025-02-19 15:15
Summary
Lua 5.4.0 (fixed in 5.4.1) has a segmentation fault in changedline in ldebug.c (e.g., when called by luaG_traceexec) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function.
Impacted products
Vendor Product Version
lua lua *



{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:lua:lua:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D14749DE-D05F-41F1-895A-C01E60CCE8B0",
              "versionEndExcluding": "5.4.0",
              "versionStartIncluding": "5.3.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Lua 5.4.0 (fixed in 5.4.1) has a segmentation fault in changedline in ldebug.c (e.g., when called by luaG_traceexec) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function."
    },
    {
      "lang": "es",
      "value": "Lua versiones hasta 5.4.0, presenta un fallo de segmentaci\u00f3n en la funci\u00f3n changedline en el archivo ldebug.c (por ejemplo, cuando es llamado por luaG_traceexec) porque espera incorrectamente que un valor oldpc siempre es actualizado siempre al regresar el flujo de control a una funci\u00f3n"
    }
  ],
  "id": "CVE-2020-15945",
  "lastModified": "2025-02-19T15:15:10.830",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2020-07-24T21:15:34.553",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lua-users.org/lists/lua-l/2020-07/msg00123.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.lua.org/bugs.html#5.4.0-8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "http://lua-users.org/lists/lua-l/2020-07/msg00123.html"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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