ubuntu-cve-2026-33612
Vulnerability from osv_ubuntu
Published
2026-06-25 13:16
Modified
2026-06-29 21:19
Summary
Details

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.0.0~alpha2-2ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.0.0~alpha2-2ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.7.3-1",
        "4.0.0~alpha1-1",
        "4.0.0~alpha1-2",
        "4.0.0~alpha2-2",
        "4.0.0~alpha2-2ubuntu0.1",
        "4.0.0~alpha2-2ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.1.1-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.1.1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.6-1",
        "4.0.6-1build1",
        "4.0.7-1",
        "4.1.1-1",
        "4.1.1-1build1",
        "4.1.1-2",
        "4.1.1-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.2.1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2.0-6",
        "4.2.1-1",
        "4.2.1-1build1",
        "4.2.1-1build2",
        "4.2.1-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.6.0-1ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.6.0-1ubuntu1+esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.2-3",
        "4.6.0-1ubuntu1",
        "4.6.0-1ubuntu1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.9.3-1build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.9.3-1build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.9.0-2",
        "4.9.1-4",
        "4.9.2-1",
        "4.9.2-1build1",
        "4.9.2-2",
        "4.9.3-1",
        "4.9.3-1build2",
        "4.9.3-1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "5.2.4-2build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@5.2.4-2build2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.0-5",
        "5.2.2-1",
        "5.2.2-2",
        "5.2.4-2",
        "5.2.4-2build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "5.3.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@5.3.5-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.4-2build2",
        "5.3.1-1",
        "5.3.3-1",
        "5.3.4-1",
        "5.3.4-1build1",
        "5.3.4-2",
        "5.3.5-1"
      ]
    }
  ],
  "aliases": [],
  "details": "A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning.",
  "id": "UBUNTU-CVE-2026-33612",
  "modified": "2026-06-29T21:19:59Z",
  "published": "2026-06-25T13:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-33612"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-33612"
    },
    {
      "type": "REPORT",
      "url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2026-08.html#cve-2026-3361-zonetocache-can-poison-the-cache"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-33612"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.