vuln-ubuntu/data/osv/usn/USN-6037-1.json

{
  "schema_version": "1.7.0",
  "id": "USN-6037-1",
  "summary": "Apache Commons Net vulnerability",
  "details": "ZeddYu Lu discovered that the FTP client from Apache Commons Net trusted\nthe host from PASV responses by default. A remote attacker with a\nmalicious FTP server could redirect the client to another server, which\ncould possibly result in leaked information about services running on the\nprivate network of the client.\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2021-37533"
  ],
  "related": [],
  "published": "2023-04-28T10:19:40Z",
  "modified": "2026-06-25T10:46:12Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libcommons-net-java",
        "purl": "pkg:deb/ubuntu/libcommons-net-java@3.4-2ubuntu2+esm1?arch=source&distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.4-2ubuntu2+esm1"
            }
          ]
        }
      ],
      "versions": [
        "3.3-2",
        "3.4-1",
        "3.4-2",
        "3.4-2ubuntu2"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libcommons-net-java",
            "binary_version": "3.4-2ubuntu2+esm1"
          }
        ],
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:Pro:16.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-37533",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libcommons-net-java",
        "purl": "pkg:deb/ubuntu/libcommons-net-java@3.6-1+deb11u1build0.18.04.1?arch=source&distro=bionic"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6-1+deb11u1build0.18.04.1"
            }
          ]
        }
      ],
      "versions": [
        "3.6-1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libcommons-net-java",
            "binary_version": "3.6-1+deb11u1build0.18.04.1"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:18.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-37533",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libcommons-net-java",
        "purl": "pkg:deb/ubuntu/libcommons-net-java@3.6-1+deb11u1build0.20.04.1?arch=source&distro=focal"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6-1+deb11u1build0.20.04.1"
            }
          ]
        }
      ],
      "versions": [
        "3.6-1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libcommons-net-java",
            "binary_version": "3.6-1+deb11u1build0.20.04.1"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:20.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-37533",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libcommons-net-java",
        "purl": "pkg:deb/ubuntu/libcommons-net-java@3.6-1+deb11u1build0.22.04.1?arch=source&distro=jammy"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6-1+deb11u1build0.22.04.1"
            }
          ]
        }
      ],
      "versions": [
        "3.6-1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libcommons-net-java",
            "binary_version": "3.6-1+deb11u1build0.22.04.1"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:22.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-37533",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6037-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-37533"
    }
  ]
}