FKIE_CVE-2023-4540

Vulnerability from fkie_nvd - Published: 2023-09-05 08:15 - Updated: 2026-06-17 06:38
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop. This issue affects lua-http: all versions before commit ddab283.
References
cvd@cert.plhttps://cert.pl/en/posts/2023/09/CVE-2023-4540/
cvd@cert.plhttps://cert.pl/posts/2023/09/CVE-2023-4540/Patch, Third Party Advisory
cvd@cert.plhttps://github.com/daurnimator/lua-http/commit/ddab2835c583d45dec62680ca8d3cbde55e0bae6Patch
af854a3a-2127-422b-91ae-364da2661108https://cert.pl/posts/2023/09/CVE-2023-4540/Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/daurnimator/lua-http/commit/ddab2835c583d45dec62680ca8d3cbde55e0bae6Patch
af854a3a-2127-422b-91ae-364da2661108https://https://cert.pl/en/posts/2023/09/CVE-2023-4540/
Impacted products
Vendor Product Version
daurnimator lua-http 0.4
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://github.com/daurnimator/lua-http",
          "defaultStatus": "unaffected",
          "product": "lua-http",
          "vendor": "Daurnimator",
          "versions": [
            {
              "lessThan": "commit ddab283",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            }
          ]
        }
      ],
      "source": "cvd@cert.pl"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:daurnimator:lua-http:0.4:*:*:*:*:lua:*:*",
              "matchCriteriaId": "D337EBD6-A704-44C0-8533-1EA9B5366780",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. \nSuch a request causes the program to enter an infinite loop. \n\nThis issue affects lua-http: all versions before commit ddab283."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Manejo Inadecuado de Condiciones Excepcionales en la librer\u00eda lua-http de Daurnimator permite la asignaci\u00f3n excesiva y la ejecuci\u00f3n de un ataque de Denegaci\u00f3n de Servicio (DoS)  mediante el env\u00edo de una petici\u00f3n correctamente manipulada al servidor. Este problema afecta a lua-http: todas las versiones anteriores al commit ddab283. "
    }
  ],
  "id": "CVE-2023-4540",
  "lastModified": "2026-06-17T06:38:02.853",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-4540",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-30T15:48:52.303748Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-09-05T08:15:40.017",
  "references": [
    {
      "source": "cvd@cert.pl",
      "url": "https://cert.pl/en/posts/2023/09/CVE-2023-4540/"
    },
    {
      "source": "cvd@cert.pl",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://cert.pl/posts/2023/09/CVE-2023-4540/"
    },
    {
      "source": "cvd@cert.pl",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/daurnimator/lua-http/commit/ddab2835c583d45dec62680ca8d3cbde55e0bae6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://cert.pl/posts/2023/09/CVE-2023-4540/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/daurnimator/lua-http/commit/ddab2835c583d45dec62680ca8d3cbde55e0bae6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://https://cert.pl/en/posts/2023/09/CVE-2023-4540/"
    }
  ],
  "sourceIdentifier": "cvd@cert.pl",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ],
      "source": "cvd@cert.pl",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.