Vulnerability-Lookup

FKIE_CVE-2020-36661

Vulnerability from fkie_nvd - Published: 2023-02-12 21:15 - Updated: 2026-06-17 03:15

Severity

3.5 (Low) - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

A vulnerability was found in Kong lua-multipart 0.5.8-1. It has been declared as problematic. This vulnerability affects the function is_header of the file src/multipart.lua. The manipulation leads to inefficient regular expression complexity. Upgrading to version 0.5.9-1 is able to address this issue. The patch is identified as d632e5df43a2928fd537784a99a79dec288bf01b. It is recommended to upgrade the affected component. VDB-220642 is the identifier assigned to this vulnerability.

References

URL	Tags
cna@vuldb.com	https://github.com/Kong/lua-multipart/commit/d632e5df43a2928fd537784a99a79dec288bf01b	Patch
cna@vuldb.com	https://github.com/Kong/lua-multipart/pull/34	Issue Tracking, Patch
cna@vuldb.com	https://github.com/Kong/lua-multipart/releases/tag/0.5.9-1	Patch, Release Notes
cna@vuldb.com	https://vuldb.com/?ctiid.220642	Permissions Required, Third Party Advisory
cna@vuldb.com	https://vuldb.com/?id.220642	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/Kong/lua-multipart/commit/d632e5df43a2928fd537784a99a79dec288bf01b	Patch
af854a3a-2127-422b-91ae-364da2661108	https://github.com/Kong/lua-multipart/pull/34	Issue Tracking, Patch
af854a3a-2127-422b-91ae-364da2661108	https://github.com/Kong/lua-multipart/releases/tag/0.5.9-1	Patch, Release Notes
af854a3a-2127-422b-91ae-364da2661108	https://vuldb.com/?ctiid.220642	Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://vuldb.com/?id.220642	Third Party Advisory

Impacted products

	Vendor	Product	Version
	konghq	multipart	0.5.8-1

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "lua-multipart",
          "vendor": "Kong",
          "versions": [
            {
              "status": "affected",
              "version": "0.5.8-1"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:konghq:multipart:0.5.8-1:*:*:*:*:lua:*:*",
              "matchCriteriaId": "706451AA-EA0B-482A-9F9C-B1BA98D80EFD",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was found in Kong lua-multipart 0.5.8-1. It has been declared as problematic. This vulnerability affects the function is_header of the file src/multipart.lua. The manipulation leads to inefficient regular expression complexity. Upgrading to version 0.5.9-1 is able to address this issue. The patch is identified as d632e5df43a2928fd537784a99a79dec288bf01b. It is recommended to upgrade the affected component. VDB-220642 is the identifier assigned to this vulnerability."
    }
  ],
  "id": "CVE-2020-36661",
  "lastModified": "2026-06-17T03:15:55.757",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "ADJACENT_NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.7,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:A/AC:L/Au:S/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 5.1,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 3.5,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 1.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      },
      {
        "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2020-36661",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-03-24T15:06:24.399662Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-02-12T21:15:10.650",
  "references": [
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/Kong/lua-multipart/commit/d632e5df43a2928fd537784a99a79dec288bf01b"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/Kong/lua-multipart/pull/34"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Patch",
        "Release Notes"
      ],
      "url": "https://github.com/Kong/lua-multipart/releases/tag/0.5.9-1"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Permissions Required",
        "Third Party Advisory"
      ],
      "url": "https://vuldb.com/?ctiid.220642"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://vuldb.com/?id.220642"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/Kong/lua-multipart/commit/d632e5df43a2928fd537784a99a79dec288bf01b"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/Kong/lua-multipart/pull/34"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Release Notes"
      ],
      "url": "https://github.com/Kong/lua-multipart/releases/tag/0.5.9-1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Permissions Required",
        "Third Party Advisory"
      ],
      "url": "https://vuldb.com/?ctiid.220642"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://vuldb.com/?id.220642"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

CVE-2020-36661 (GCVE-0-2020-36661)

Vulnerability from cvelistv5 – Published: 2023-02-12 20:31 – Updated: 2025-03-24 18:40

Title

Kong lua-multipart multipart.lua is_header redos

Summary

Severity

3.5 (Low)


                        
                          CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

3.5 (Low)


                        
                          CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-24 15:06 UTC

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

VulDB mitre root

References

5 references

URL	Tags
https://vuldb.com/?id.220642	vdb-entrytechnical-description
https://vuldb.com/?ctiid.220642	signaturepermissions-required
https://github.com/Kong/lua-multipart/pull/34	issue-tracking
https://github.com/Kong/lua-multipart/commit/d632…	patch
https://github.com/Kong/lua-multipart/releases/ta…	patch

Impacted products

1 product

Vendor	Product	Version
Kong	lua-multipart	Affected: 0.5.8-1

Credits

VulDB GitHub Commit Analyzer

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T17:30:08.594Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "technical-description",
              "x_transferred"
            ],
            "url": "https://vuldb.com/?id.220642"
          },
          {
            "tags": [
              "signature",
              "permissions-required",
              "x_transferred"
            ],
            "url": "https://vuldb.com/?ctiid.220642"
          },
          {
            "tags": [
              "issue-tracking",
              "x_transferred"
            ],
            "url": "https://github.com/Kong/lua-multipart/pull/34"
          },
          {
            "tags": [
              "patch",
              "x_transferred"
            ],
            "url": "https://github.com/Kong/lua-multipart/commit/d632e5df43a2928fd537784a99a79dec288bf01b"
          },
          {
            "tags": [
              "patch",
              "x_transferred"
            ],
            "url": "https://github.com/Kong/lua-multipart/releases/tag/0.5.9-1"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-36661",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-24T15:06:24.399662Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-24T18:40:00.463Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "lua-multipart",
          "vendor": "Kong",
          "versions": [
            {
              "status": "affected",
              "version": "0.5.8-1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "tool",
          "value": "VulDB GitHub Commit Analyzer"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was found in Kong lua-multipart 0.5.8-1. It has been declared as problematic. This vulnerability affects the function is_header of the file src/multipart.lua. The manipulation leads to inefficient regular expression complexity. Upgrading to version 0.5.9-1 is able to address this issue. The patch is identified as d632e5df43a2928fd537784a99a79dec288bf01b. It is recommended to upgrade the affected component. VDB-220642 is the identifier assigned to this vulnerability."
        },
        {
          "lang": "de",
          "value": "In Kong lua-multipart 0.5.8-1 wurde eine Schwachstelle ausgemacht. Sie wurde als problematisch eingestuft. Betroffen ist die Funktion is_header der Datei src/multipart.lua. Durch Manipulation mit unbekannten Daten kann eine inefficient regular expression complexity-Schwachstelle ausgenutzt werden. Ein Aktualisieren auf die Version 0.5.9-1 vermag dieses Problem zu l\u00f6sen. Der Patch wird als d632e5df43a2928fd537784a99a79dec288bf01b bezeichnet. Als bestm\u00f6gliche Massnahme wird das Einspielen eines Upgrades empfohlen."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 3.5,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 3.5,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 2.7,
            "vectorString": "AV:A/AC:L/Au:S/C:N/I:N/A:P",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "CWE-1333 Inefficient Regular Expression Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-10-20T13:22:27.759Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.220642"
        },
        {
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.220642"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/Kong/lua-multipart/pull/34"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/Kong/lua-multipart/commit/d632e5df43a2928fd537784a99a79dec288bf01b"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/Kong/lua-multipart/releases/tag/0.5.9-1"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2023-02-11T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2023-02-11T00:00:00.000Z",
          "value": "CVE reserved"
        },
        {
          "lang": "en",
          "time": "2023-02-11T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2023-03-10T09:29:05.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Kong lua-multipart multipart.lua is_header redos"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2020-36661",
    "datePublished": "2023-02-12T20:31:03.522Z",
    "dateReserved": "2023-02-11T17:31:22.590Z",
    "dateUpdated": "2025-03-24T18:40:00.463Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.