ubuntu-cve-2021-40491
Vulnerability from osv_ubuntu
Published
2021-09-03 02:15
Modified
2025-10-15 16:50
Summary
Details

The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "inetutils",
        "purl": "pkg:deb/ubuntu/inetutils@2:1.9.2-1ubuntu0.1~esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.2-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.9.1.306-0a482-1",
        "2:1.9.1.363-bbc1-1",
        "2:1.9.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "inetutils",
        "purl": "pkg:deb/ubuntu/inetutils@2:1.9.4-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.4-1ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.9.4-1",
        "2:1.9.4-1build1",
        "2:1.9.4-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "inetutils",
        "purl": "pkg:deb/ubuntu/inetutils@2:1.9.4-3ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.4-3ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.9.4-2build1",
        "2:1.9.4-3",
        "2:1.9.4-3ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          },
          {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.4-11ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "inetutils",
        "purl": "pkg:deb/ubuntu/inetutils@2:1.9.4-11ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.4-11ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.9.4-10build1",
        "2:1.9.4-11",
        "2:1.9.4-11ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.",
  "id": "UBUNTU-CVE-2021-40491",
  "modified": "2025-10-15T16:50:52Z",
  "published": "2021-09-03T02:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-40491"
    },
    {
      "type": "REPORT",
      "url": "https://lists.gnu.org/archive/html/bug-inetutils/2021-06/msg00002.html"
    },
    {
      "type": "REPORT",
      "url": "https://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=58cb043b190fd04effdaea7c9403416b436e50dd"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993476"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5177-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-40491"
    }
  ],
  "related": [
    "USN-5177-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-40491"
  ]
}



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