ubuntu-cve-2016-2120
Vulnerability from osv_ubuntu
Published
2018-11-01 13:29
Modified
2025-09-08 16:43
Summary
Details

An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-backend-geoip",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-backend-ldap",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-backend-lua",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-backend-mydns",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-backend-mysql",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-backend-pgsql",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-backend-pipe",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-backend-remote",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-backend-sqlite3",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-backend-tinydns",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-server",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "pdns-tools",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "pdns",
        "purl": "pkg:deb/ubuntu/pdns@4.0.0~alpha2-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.4.5-1build2",
        "3.4.6-2",
        "3.4.6-3",
        "3.4.7-1",
        "3.4.7-2",
        "4.0.0~alpha1-1",
        "4.0.0~alpha2-2",
        "4.0.0~alpha2-3",
        "4.0.0~alpha2-3build1",
        "4.0.0~alpha2-3ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.",
  "id": "UBUNTU-CVE-2016-2120",
  "modified": "2025-09-08T16:43:37Z",
  "published": "2018-11-01T13:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-2120"
    },
    {
      "type": "REPORT",
      "url": "https://doc.powerdns.com/md/security/powerdns-advisory-2016-05/"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2016-2120"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2016-2120"
  ]
}



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