ubuntu-cve-2022-39028
Vulnerability from osv_ubuntu
Published
2022-08-30 05:15
Modified
2025-09-30 04:48
Summary
Details

telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "inetutils",
        "purl": "pkg:deb/ubuntu/inetutils@2:1.9.2-1ubuntu0.1~esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.2-1ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.9.1.306-0a482-1",
        "2:1.9.1.363-bbc1-1",
        "2:1.9.2-1",
        "2:1.9.2-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          },
          {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "inetutils",
        "purl": "pkg:deb/ubuntu/inetutils@2:1.9.4-1ubuntu0.1~esm3?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.4-1ubuntu0.1~esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.9.4-1",
        "2:1.9.4-1build1",
        "2:1.9.4-1ubuntu0.1~esm1",
        "2:1.9.4-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          },
          {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "inetutils",
        "purl": "pkg:deb/ubuntu/inetutils@2:1.9.4-3ubuntu0.1+esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.4-3ubuntu0.1+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.9.4-2build1",
        "2:1.9.4-3",
        "2:1.9.4-3ubuntu0.1",
        "2:1.9.4-3ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          },
          {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.4-11ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "inetutils",
        "purl": "pkg:deb/ubuntu/inetutils@2:1.9.4-11ubuntu0.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.4-11ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.9.4-10build1",
        "2:1.9.4-11",
        "2:1.9.4-11ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-ping",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-talk",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-tools",
            "binary_version": "2:2.2-2ubuntu0.1"
          },
          {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:2.2-2ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "inetutils",
        "purl": "pkg:deb/ubuntu/inetutils@2:2.2-2ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.2-2ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:2.0-1",
        "2:2.2-2"
      ]
    }
  ],
  "aliases": [],
  "details": "telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a \"telnet/tcp server failing (looping), service terminated\" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.",
  "id": "UBUNTU-CVE-2022-39028",
  "modified": "2025-09-30T04:48:33Z",
  "published": "2022-08-30T05:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-39028"
    },
    {
      "type": "REPORT",
      "url": "https://lists.gnu.org/archive/html/bug-inetutils/2022-08/msg00002.html"
    },
    {
      "type": "REPORT",
      "url": "https://pierrekim.github.io/blog/2022-08-24-2-byte-dos-freebsd-netbsd-telnetd-netkit-telnetd-inetutils-telnetd-kerberos-telnetd.html"
    },
    {
      "type": "REPORT",
      "url": "https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=113da8021710d871c7dd72d2a4d5615d42d64289"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6304-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-39028"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7781-1"
    }
  ],
  "related": [
    "USN-6304-1",
    "USN-7781-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2022-39028"
  ]
}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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