Vulnerability-Lookup

CVE-2025-30187 (GCVE-0-2025-30187)

Vulnerability from cvelistv5 – Published: 2025-09-18 09:21 – Updated: 2025-11-04 21:09

Title

Denial of service via crafted DoH exchange in PowerDNS DNSdist

Summary

In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources.

Severity ?

3.7 (Low)


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

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

References

URL

Tags

https://www.dnsdist.org/security-advisories/power…

Impacted products

	Vendor	Product	Version
	PowerDNS	DNSdist	Affected: 1.9.0 , < 1.9.11 (semver) Affected: 2.0.0 , < 2.0.1 (semver)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2025-30187

Vulnerability from fkie_nvd - Published: 2025-09-18 10:15 - Updated: 2025-11-04 22:16

Severity ?

3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Summary

References

	URL	Tags
	security@open-xchange.com	https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.html
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2025/09/18/1

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources."
    }
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  "id": "CVE-2025-30187",
  "lastModified": "2025-11-04T22:16:09.450",
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        "impactScore": 1.4,
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        "type": "Secondary"
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  "published": "2025-09-18T10:15:32.993",
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GHSA-2QMC-CH65-Q9CM

Vulnerability from github – Published: 2025-09-18 12:30 – Updated: 2025-11-05 00:31

Details

Severity ?

3.7 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-30187"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-835"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-18T10:15:32Z",
    "severity": "LOW"
  },
  "details": "In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources.",
  "id": "GHSA-2qmc-ch65-q9cm",
  "modified": "2025-11-05T00:31:28Z",
  "published": "2025-09-18T12:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30187"
    },
    {
      "type": "WEB",
      "url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/09/18/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

WID-SEC-W-2025-2112

Vulnerability from csaf_certbund - Published: 2025-09-23 22:00 - Updated: 2025-09-23 22:00

Summary

DNSdist: Schwachstelle ermöglicht Denial of Service

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, anonymer Angreifer kann eine Schwachstelle in DNSdist ausnutzen, um einen Denial of Service Angriff durchzuführen.

Betroffene Betriebssysteme

- Sonstiges

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.",
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      },
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        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in DNSdist ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges",
        "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-2025-2112 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-2112.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2025-2112 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2112"
      },
      {
        "category": "external",
        "summary": "PowerDNS Security Advisory vom 2025-09-23",
        "url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-05.html"
      }
    ],
    "source_lang": "en-US",
    "title": "DNSdist: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2025-09-23T22:00:00.000+00:00",
      "generator": {
        "date": "2025-09-24T08:51:09.686+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.4.0"
        }
      },
      "id": "WID-SEC-W-2025-2112",
      "initial_release_date": "2025-09-23T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2025-09-23T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c1.9.11",
                "product": {
                  "name": "Open Source DNSdist \u003c1.9.11",
                  "product_id": "T047145"
                }
              },
              {
                "category": "product_version",
                "name": "1.9.11",
                "product": {
                  "name": "Open Source DNSdist 1.9.11",
                  "product_id": "T047145-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:open_source:dnsdist:1.9.11"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c2.0.1",
                "product": {
                  "name": "Open Source DNSdist \u003c2.0.1",
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                }
              },
              {
                "category": "product_version",
                "name": "2.0.1",
                "product": {
                  "name": "Open Source DNSdist 2.0.1",
                  "product_id": "T047146-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:open_source:dnsdist:2.0.1"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "dnsdist"
          }
        ],
        "category": "vendor",
        "name": "open_source"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-30187",
      "product_status": {
        "known_affected": [
          "T047145",
          "T047146"
        ]
      },
      "release_date": "2025-09-23T22:00:00.000+00:00",
      "title": "CVE-2025-30187"
    }
  ]
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CVE-2025-30187 (GCVE-0-2025-30187)

FKIE_CVE-2025-30187

GHSA-2QMC-CH65-Q9CM

WID-SEC-W-2025-2112

Tags

Sightings

Nomenclature