Vulnerability-Lookup

FKIE_CVE-2018-4012

Vulnerability from fkie_nvd - Published: 2019-01-03 22:29 - Updated: 2026-06-17 01:58

Severity

9.0 (Critical) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
8.1 (High) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

An exploitable buffer overflow vulnerability exists in the HTTP header-parsing function of the Webroot BrightCloud SDK. The function bc_http_read_header incorrectly handles overlong headers, leading to arbitrary code execution. An unauthenticated attacker could impersonate a remote BrightCloud server to trigger this vulnerability.

References

	URL	Tags
	talos-cna@cisco.com	https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0683	Exploit, Third Party Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0683	Exploit, Third Party Advisory

Impacted products

	Vendor	Product	Version
	webroot	brightcloud	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Webroot",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Webroot BrightCloud SDK"
            }
          ]
        }
      ],
      "source": "talos-cna@cisco.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:webroot:brightcloud:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EBE61540-357C-4428-9F93-D8FCB698087C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An exploitable buffer overflow vulnerability exists in the HTTP header-parsing function of the Webroot BrightCloud SDK. The function bc_http_read_header incorrectly handles overlong headers, leading to arbitrary code execution. An unauthenticated attacker could impersonate a remote BrightCloud server to trigger this vulnerability."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de desbordamiento de b\u00fafer existe en la funci\u00f3n de parseo de cabeceras HTTP en el Webroot de BrightCloud SDK La funci\u00f3n bc_http_read_header gestiona de manera incorrecta las cabeceras demasiado largas, provocando la ejecuci\u00f3n de c\u00f3digo arbitrario. Un atacante no autenticado podr\u00eda suplantar un servidor remoto de BrightCloud para provocar esta vulnerabilidad."
    }
  ],
  "id": "CVE-2018-4012",
  "lastModified": "2026-06-17T01:58:12.970",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 9.3,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 6.0,
        "source": "talos-cna@cisco.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-01-03T22:29:00.417",
  "references": [
    {
      "source": "talos-cna@cisco.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0683"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0683"
    }
  ],
  "sourceIdentifier": "talos-cna@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2018-4012 (GCVE-0-2018-4012)

Vulnerability from cvelistv5 – Published: 2019-01-03 23:00 – Updated: 2024-08-05 04:57

Summary

Severity

9 (Critical)


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

CWE

buffer overflow

Assigner

talos CNA under the mitre root

CNA scorecard C 61/100 over 38 records in the last 180 days details

References

1 reference

URL	Tags
https://www.talosintelligence.com/vulnerability_r…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	Webroot	Affected: Webroot BrightCloud SDK

Date Public

2019-01-03 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T04:57:24.532Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0683"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Webroot",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Webroot BrightCloud SDK"
            }
          ]
        }
      ],
      "datePublic": "2019-01-03T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "An exploitable buffer overflow vulnerability exists in the HTTP header-parsing function of the Webroot BrightCloud SDK. The function bc_http_read_header incorrectly handles overlong headers, leading to arbitrary code execution. An unauthenticated attacker could impersonate a remote BrightCloud server to trigger this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "buffer overflow",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-04-19T18:08:06.000Z",
        "orgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b",
        "shortName": "talos"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0683"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "talos-cna@cisco.com",
          "ID": "CVE-2018-4012",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Webroot",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Webroot BrightCloud SDK"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
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        "data_version": "4.0",
        "description": {
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            }
          ]
        },
        "impact": {
          "cvss": {
            "baseScore": 9,
            "baseSeverity": "Critical",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
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        "problemtype": {
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        },
        "references": {
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              "refsource": "MISC",
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            }
          ]
        }
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b",
    "assignerShortName": "talos",
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    "datePublished": "2019-01-03T23:00:00.000Z",
    "dateReserved": "2018-01-02T00:00:00.000Z",
    "dateUpdated": "2024-08-05T04:57:24.532Z",
    "state": "PUBLISHED"
  },
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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.

Vulnerability timeline

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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.
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