{
  "cveId": "CVE-2021-40491",
  "url": "https://patchblox.com/security/cve/CVE-2021-40491",
  "summary": "CVE-2021-40491 is fixed in 11 products on 1 platform, first by inetutils-ftp 2:1.9.4-3ubuntu0.1\u002Besm1, released September 2, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "inetutils-ftp: The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure t...",
  "description": "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.",
  "published": "2021-09-02T19:15:00Z",
  "severity": "Medium",
  "epss": 0.00991,
  "epssPercentile": 0.6275,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "inetutils-ftp",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-ftp 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-ftp-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-ftp",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-ftp 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-ftp-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-ftpd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-ftpd 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-ftpd-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-ftpd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-ftpd 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-ftpd-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-inetd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-inetd 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-inetd-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-inetd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-inetd 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-inetd-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-ping",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-ping 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-ping-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-ping",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-ping 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-ping-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-syslogd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-syslogd 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-syslogd-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-syslogd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-syslogd 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-syslogd-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-talk",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-talk 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-talk-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-talk",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-talk 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-talk-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-talkd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-talkd 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-talkd-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-talkd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-talkd 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-talkd-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-telnet",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-telnet 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-telnet-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-telnet",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-telnet 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-telnet-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-telnetd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-telnetd 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-telnetd-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-telnetd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-telnetd 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-telnetd-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-tools",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-tools 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-tools-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-tools",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-tools 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-tools-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-traceroute",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.9.4-3ubuntu0.1\u002Besm1",
      "fix": "inetutils-traceroute 2:1.9.4-3ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-inetutils-traceroute-2-1.9.4-3ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "inetutils-traceroute",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.9.4-11ubuntu0.1\u002Besm1",
      "fix": "inetutils-traceroute 2:1.9.4-11ubuntu0.1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-inetutils-traceroute-2-1.9.4-11ubuntu0.1-esm1",
      "released": "2021-09-02T19:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}