« Volver al listado

CVE-2023-27535

Estado: ModificadaMedia (5.9)—

An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (10)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-27535",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-27535",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-06-03T18:24:11.710118Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.2
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "support@hackerone.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "https://github.com/curl/curl",
          "versions": [
            {
              "status": "affected",
              "version": "Fixed in 8.0.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2023-03-30T20:15:07.483",
  "references": [
    {
      "url": "https://hackerone.com/reports/1892780",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "support@hackerone.com"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "support@hackerone.com"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "support@hackerone.com"
    },
    {
      "url": "https://security.gentoo.org/glsa/202310-12",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "support@hackerone.com"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20230420-0010/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "support@hackerone.com"
    },
    {
      "url": "https://hackerone.com/reports/1892780",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/202310-12",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20230420-0010/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "support@hackerone.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-305"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information."
    }
  ],
  "lastModified": "2026-06-17T05:45:25.500",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9C599258-A578-454A-BB51-AC2B5C4BE0A8",
              "versionEndIncluding": "7.88.1",
              "versionStartIncluding": "7.13.0"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3A756737-1CC4-42C2-A4DF-E1C893B4E2D5"
            },
            {
              "criteria": "cpe:2.3:a:netapp:ontap_9:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AD886814-B4A0-4764-9F08-2060601D8E89"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6770B6C3-732E-4E22-BF1C-2D2FD610061C"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "9F9C8C20-42EB-4AB5-BD97-212DEB070C43"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7FFF7106-ED78-49BA-9EC5-B889E3685D53"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "E63D8B0F-006E-4801-BF9D-1C001BBFB4F9"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "56409CEC-5A1E-4450-AA42-641E459CC2AF"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "B06F4839-D16A-4A61-9BB5-55B13F41E47F"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D0B4AD8A-F172-4558-AEC6-FF424BA2D912"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "8497A4C9-8474-4A62-8331-3FE862ED4098"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5722E753-75DE-4944-A11B-556CB299B57D",
              "versionEndExcluding": "8.2.12",
              "versionStartIncluding": "8.2.0"
            },
            {
              "criteria": "cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DC0F9351-81A4-4FEA-B6B5-6E960A933D32",
              "versionEndExcluding": "9.0.6",
              "versionStartIncluding": "9.0.0"
            },
            {
              "criteria": "cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EED24E67-2957-4C1B-8FEA-E2D2FE7B97FC"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "support@hackerone.com"
}