Vulnerability-Lookup

WID-SEC-W-2026-2078

Vulnerability from csaf_certbund - Published: 2026-06-24 22:00 - Updated: 2026-08-06 22:00

Summary

PowerDNS Authoritative Server: Schwachstelle ermöglicht Denial of Service

Severity

Niedrig

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: Der Domain Name Service (DNS) ermöglicht die Umsetzung der Domainnamen in IP-Adressen. Zur Verhinderung von übermäßigen Anfragen werden die Zuordnungen häufig lokal in einem Cache gespeichert.

Angriff: Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in PowerDNS Authoritative Server ausnutzen, um einen Denial of Service Angriff durchzuführen.

Betroffene Betriebssysteme: - Linux - UNIX

CVE-2026-42005

Affected products

Known affected 6 products

Product	Identifier	Version
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
Open Source PowerDNS Authoritative Server <4.9.16 Open Source / PowerDNS		Authoritative Server <4.9.16
Open Source PowerDNS Authoritative Server <5.0.6 Open Source / PowerDNS		Authoritative Server <5.0.6
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Open Source PowerDNS Authoritative Server <5.1.2 Open Source / PowerDNS		Authoritative Server <5.1.2
Fedora Linux Fedora	`cpe:/o:fedoraproject:fedora:-`	—

References

12 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://doc.powerdns.com/authoritative/security-a…	external
https://bodhi.fedoraproject.org/updates/FEDORA-EP…	external
https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
https://bodhi.fedoraproject.org/updates/FEDORA-EP…	external
https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
https://security-tracker.debian.org/tracker/DSA-6369-1	external
https://security-tracker.debian.org/tracker/DSA-6367-1	external
https://bodhi.fedoraproject.org/updates/FEDORA-EP…	external
https://lists.opensuse.org/archives/list/security…	external
https://lists.opensuse.org/archives/list/security…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "niedrig"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Der Domain Name Service (DNS) erm\u00f6glicht die Umsetzung der Domainnamen in IP-Adressen. Zur Verhinderung von \u00fcberm\u00e4\u00dfigen Anfragen werden die Zuordnungen h\u00e4ufig lokal in einem Cache gespeichert.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in PowerDNS Authoritative Server ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-2078 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2078.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2078 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2078"
      },
      {
        "category": "external",
        "summary": "PowerDNS Security Advisory 2026-07 vom 2026-06-24",
        "url": "https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-07.html"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-EPEL-2026-519F76D880 vom 2026-06-25",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-519f76d880"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-F6AC0DB764 vom 2026-06-25",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-f6ac0db764"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-EPEL-2026-63A95F4CB3 vom 2026-06-25",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-63a95f4cb3"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-5CE1370ACA vom 2026-06-25",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-5ce1370aca"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-6369 vom 2026-06-26",
        "url": "https://security-tracker.debian.org/tracker/DSA-6369-1"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-6367 vom 2026-06-26",
        "url": "https://security-tracker.debian.org/tracker/DSA-6367-1"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-EPEL-2026-A9341FA7F6 vom 2026-07-13",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-a9341fa7f6"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:11411-1 vom 2026-08-01",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/P5USXRDM6524H6OHQ4RAJV75H3ICYQQD/"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:21533-1 vom 2026-08-06",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/FWENWC7O75SXDUZW6LQVSIMHSDHM5NOP/"
      }
    ],
    "source_lang": "en-US",
    "title": "PowerDNS Authoritative Server: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2026-08-06T22:00:00.000+00:00",
      "generator": {
        "date": "2026-08-07T08:57:58.105+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-2078",
      "initial_release_date": "2026-06-24T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-06-24T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-06-25T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von European Union Vulnerability Database und Fedora aufgenommen"
        },
        {
          "date": "2026-07-12T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Fedora aufgenommen"
        },
        {
          "date": "2026-08-02T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von openSUSE aufgenommen"
        },
        {
          "date": "2026-08-06T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von openSUSE aufgenommen"
        }
      ],
      "status": "final",
      "version": "5"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Fedora Linux",
            "product": {
              "name": "Fedora Linux",
              "product_id": "74185",
              "product_identification_helper": {
                "cpe": "cpe:/o:fedoraproject:fedora:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Fedora"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "Authoritative Server \u003c5.1.2",
                "product": {
                  "name": "Open Source PowerDNS Authoritative Server \u003c5.1.2",
                  "product_id": "T055814"
                }
              },
              {
                "category": "product_version",
                "name": "Authoritative Server 5.1.2",
                "product": {
                  "name": "Open Source PowerDNS Authoritative Server 5.1.2",
                  "product_id": "T055814-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:powerdns:recursor:authoritative_server__5.1.2"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "Authoritative Server \u003c5.0.6",
                "product": {
                  "name": "Open Source PowerDNS Authoritative Server \u003c5.0.6",
                  "product_id": "T055815"
                }
              },
              {
                "category": "product_version",
                "name": "Authoritative Server 5.0.6",
                "product": {
                  "name": "Open Source PowerDNS Authoritative Server 5.0.6",
                  "product_id": "T055815-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:powerdns:recursor:authoritative_server__5.0.6"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "Authoritative Server \u003c4.9.16",
                "product": {
                  "name": "Open Source PowerDNS Authoritative Server \u003c4.9.16",
                  "product_id": "T055816"
                }
              },
              {
                "category": "product_version",
                "name": "Authoritative Server 4.9.16",
                "product": {
                  "name": "Open Source PowerDNS Authoritative Server 4.9.16",
                  "product_id": "T055816-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:powerdns:recursor:authoritative_server__4.9.16"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "PowerDNS"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE openSUSE",
            "product": {
              "name": "SUSE openSUSE",
              "product_id": "T055946",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:opensuse:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-42005",
      "product_status": {
        "known_affected": [
          "2951",
          "T055816",
          "T055815",
          "T055946",
          "T055814",
          "74185"
        ]
      },
      "release_date": "2026-06-24T22:00:00.000+00:00",
      "title": "CVE-2026-42005"
    }
  ]
}

CVE-2026-42005 (GCVE-0-2026-42005)

Vulnerability from cvelistv5 – Published: 2026-06-25 11:57 – Updated: 2026-06-25 13:04

Title

Insufficient input validation of internal web server

Summary

An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-25 13:03 UTC

CWE

Allocation of Resources Without Limits or Throttling
CWE-400 - Uncontrolled Resource Consumption

Assigner

References

1 reference

URL	Tags
https://docs.powerdns.com/authoritative/security-…

Impacted products

1 product

Vendor	Product	Version
PowerDNS	Authoritative	Affected: 4.9.0 , < 4.9.16 (semver) Affected: 5.0.0 , < 5.0.6 (semver) Affected: 5.1.0 , < 5.1.2 (semver)

Date Public

2026-06-10 22:00

Credits

ilya rozentsvaig

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42005",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-25T13:03:44.259390Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-400",
                "description": "CWE-400 Uncontrolled Resource Consumption",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-25T13:04:12.854Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.powerdns.com/",
          "defaultStatus": "unaffected",
          "modules": [
            "YaHTTP"
          ],
          "packageName": "pdns",
          "product": "Authoritative",
          "programFiles": [
            "ext/yahttp/yahttp/reqresp.cpp"
          ],
          "repo": "https://github.com/PowerDNS/pdns",
          "vendor": "PowerDNS",
          "versions": [
            {
              "lessThan": "4.9.16",
              "status": "affected",
              "version": "4.9.0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.0.6",
              "status": "affected",
              "version": "5.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.1.2",
              "status": "affected",
              "version": "5.1.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "ilya rozentsvaig"
        }
      ],
      "datePublic": "2026-06-10T22:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "An attacker can send a web request that causes unlimited memory \nallocation in the internal web server, leading to a denial of service. \nThe internal web server is disabled by default."
            }
          ],
          "value": "An attacker can send a web request that causes unlimited memory \nallocation in the internal web server, leading to a denial of service. \nThe internal web server is disabled by default."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T11:57:16.346Z",
        "orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
        "shortName": "OX"
      },
      "references": [
        {
          "url": "https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-07.html"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Insufficient input validation of internal web server",
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
    "assignerShortName": "OX",
    "cveId": "CVE-2026-42005",
    "datePublished": "2026-06-25T11:57:16.346Z",
    "dateReserved": "2026-04-23T11:15:21.199Z",
    "dateUpdated": "2026-06-25T13:04:12.854Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

WID-SEC-W-2026-2078

CVE-2026-42005 (GCVE-0-2026-42005)

Tags

Sightings

Nomenclature