Vulnerability-Lookup

FKIE_CVE-2020-15689

Vulnerability from fkie_nvd - Published: 2020-07-13 14:15 - Updated: 2026-06-17 02:57

Severity

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

Summary

Appweb before 7.2.2 and 8.x before 8.1.0, when built with CGI support, mishandles an HTTP request with a Range header that lacks an exact range. This may result in a NULL pointer dereference and cause a denial of service.

References

	URL	Tags
	cve@mitre.org	https://github.com/embedthis/appweb-gpl/issues/2	Broken Link
	af854a3a-2127-422b-91ae-364da2661108	https://github.com/embedthis/appweb-gpl/issues/2	Broken Link

Impacted products

	Vendor	Product	Version
	embedthis	appweb	*
	embedthis	appweb	*

JSON

To clipboard

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      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
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        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:embedthis:appweb:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "39B18DBC-5F03-47B6-ABEA-F4E410A985E9",
              "versionEndExcluding": "7.2.2",
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            },
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              "matchCriteriaId": "A7620570-5A08-448C-80A5-224279469E3E",
              "versionEndExcluding": "8.1.0",
              "versionStartIncluding": "8.0.0",
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            }
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Appweb before 7.2.2 and 8.x before 8.1.0, when built with CGI support, mishandles an HTTP request with a Range header that lacks an exact range. This may result in a NULL pointer dereference and cause a denial of service."
    },
    {
      "lang": "es",
      "value": "Appweb versiones anteriores a 7.2.2 y versiones 8.x anteriores a 8.1.0, cuando se construye con soporte CGI, maneja inapropiadamente una petici\u00f3n HTTP con un encabezado Range que carece de un rango exacto. Esto puede resultar en una desreferencia del puntero NULL y causar una denegaci\u00f3n de servicio"
    }
  ],
  "id": "CVE-2020-15689",
  "lastModified": "2026-06-17T02:57:03.463",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "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"
      }
    ]
  },
  "published": "2020-07-13T14:15:11.070",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link"
      ],
      "url": "https://github.com/embedthis/appweb-gpl/issues/2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link"
      ],
      "url": "https://github.com/embedthis/appweb-gpl/issues/2"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2020-15689 (GCVE-0-2020-15689)

Vulnerability from cvelistv5 – Published: 2020-07-13 13:48 – Updated: 2024-08-04 13:22

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/embedthis/appweb-gpl/issues/2	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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          }
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        "title": "CVE Program Container"
      }
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    "cna": {
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        }
      ],
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      "problemTypes": [
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              "lang": "en",
              "type": "text"
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        "dateUpdated": "2020-07-19T23:44:08.000Z",
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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.