ubuntu-cve-2019-11366
Vulnerability from osv_ubuntu
Published
2019-04-20 13:29
Modified
2025-10-10 14:59
Summary
Details

An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current->next.

Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "atftp",
            "binary_version": "0.7.git20120829-3.1~0.16.04.1"
          },
          {
            "binary_name": "atftpd",
            "binary_version": "0.7.git20120829-3.1~0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "atftp",
        "purl": "pkg:deb/ubuntu/atftp@0.7.git20120829-3.1~0.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.git20120829-3.1~0.16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.git20120829-2.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "atftp",
            "binary_version": "0.7.git20120829-3.1~0.18.04.1"
          },
          {
            "binary_name": "atftpd",
            "binary_version": "0.7.git20120829-3.1~0.18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "atftp",
        "purl": "pkg:deb/ubuntu/atftp@0.7.git20120829-3.1~0.18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.git20120829-3.1~0.18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.git20120829-3"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current-\u003enext.",
  "id": "UBUNTU-CVE-2019-11366",
  "modified": "2025-10-10T14:59:07Z",
  "published": "2019-04-20T13:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-11366"
    },
    {
      "type": "REPORT",
      "url": "https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities"
    },
    {
      "type": "REPORT",
      "url": "https://sourceforge.net/p/atftp/code/ci/382f76a90b44f81fec00e2f609a94def4a5d3580/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4540-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4643-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-11366"
    }
  ],
  "related": [
    "USN-4540-1",
    "USN-4643-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-11366"
  ]
}



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