CVE-2024-12705 (GCVE-0-2024-12705)

Vulnerability from cvelistv5 – Published: 2025-01-29 21:40 – Updated: 2025-02-07 17:02
VLAI
Title
DNS-over-HTTPS implementation suffers from multiple issues under heavy query load
Summary
Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic. This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
isc
References
Impacted products
Vendor Product Version
ISC BIND 9 Affected: 9.18.0 , ≤ 9.18.32 (custom)
Affected: 9.20.0 , ≤ 9.20.4 (custom)
Affected: 9.21.0 , ≤ 9.21.3 (custom)
Affected: 9.18.11-S1 , ≤ 9.18.32-S1 (custom)
Create a notification for this product.
Date Public
2025-01-29 00:00
Credits
ISC would like to thank Jean-François Billaud for bringing this vulnerability to our attention.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-12705",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-01-30T15:25:35.856020Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-01-30T15:27:00.887Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-02-07T17:02:44.473Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://security.netapp.com/advisory/ntap-20250207-0003/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "BIND 9",
          "vendor": "ISC",
          "versions": [
            {
              "lessThanOrEqual": "9.18.32",
              "status": "affected",
              "version": "9.18.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "9.20.4",
              "status": "affected",
              "version": "9.20.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "9.21.3",
              "status": "affected",
              "version": "9.21.0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "9.18.32-S1",
              "status": "affected",
              "version": "9.18.11-S1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "ISC would like to thank Jean-Fran\u00e7ois Billaud for bringing this vulnerability to our attention."
        }
      ],
      "datePublic": "2025-01-29T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver\u0027s CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic.\nThis issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "We are not aware of any active exploits."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "By flooding a target resolver with HTTP/2 traffic and exploiting this flaw, an attacker could overwhelm the server, causing high CPU and/or memory usage and preventing other clients from establishing DoH connections. This would significantly impair the resolver\u0027s performance and effectively deny legitimate clients access to the DNS resolution service."
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-29T21:40:27.839Z",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
        "shortName": "isc"
      },
      "references": [
        {
          "name": "CVE-2024-12705",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://kb.isc.org/docs/cve-2024-12705"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to the patched release most closely related to your current version of BIND 9: 9.18.33, 9.20.5, 9.21.4, or 9.18.33-S1."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "DNS-over-HTTPS implementation suffers from multiple issues under heavy query load",
      "workarounds": [
        {
          "lang": "en",
          "value": "The issue affects only the DNS-over-HTTPS protocol and does not apply to instances where DoH is not enabled."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2024-12705",
    "datePublished": "2025-01-29T21:40:27.839Z",
    "dateReserved": "2024-12-17T14:25:50.907Z",
    "dateUpdated": "2025-02-07T17:02:44.473Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-12705",
      "date": "2026-07-29",
      "epss": "0.17935",
      "percentile": "0.96871"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T02:51:23.000Z",
      "cve": "CVE-2024-12705",
      "id": "msrc_CVE-2024-12705",
      "initial_release_date": "2025-01-02T00:00:00.000Z",
      "product_status:fixed": "2",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "DNS-over-HTTPS implementation suffers from multiple issues under heavy query load",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2024-12705.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-12705\",\"sourceIdentifier\":\"security-officer@isc.org\",\"published\":\"2025-01-29T22:15:28.800\",\"lastModified\":\"2026-06-17T07:00:18.683\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver\u0027s CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic.\\nThis issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1.\"},{\"lang\":\"es\",\"value\":\"Los clientes que utilizan DNS sobre HTTPS (DoH) pueden agotar la CPU o la memoria de un solucionador de DNS inund\u00e1ndolo con tr\u00e1fico HTTP/2 v\u00e1lido o no v\u00e1lido manipulado. Este problema afecta a las versiones de BIND 9 9.18.0 a 9.18.32, 9.20.0 a 9.20.4, 9.21.0 a 9.21.3 y 9.18.11-S1 a 9.18.32-S1.\"}],\"affected\":[{\"source\":\"security-officer@isc.org\",\"affectedData\":[{\"vendor\":\"ISC\",\"product\":\"BIND 9\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"9.18.0\",\"lessThanOrEqual\":\"9.18.32\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"9.20.0\",\"lessThanOrEqual\":\"9.20.4\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"9.21.0\",\"lessThanOrEqual\":\"9.21.3\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"9.18.11-S1\",\"lessThanOrEqual\":\"9.18.32-S1\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-officer@isc.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-01-30T15:25:35.856020Z\",\"id\":\"CVE-2024-12705\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-officer@isc.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"references\":[{\"url\":\"https://kb.isc.org/docs/cve-2024-12705\",\"source\":\"security-officer@isc.org\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20250207-0003/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-07-01T03:07:57+00:00",
      "cve": "CVE-2024-12705",
      "id": "CVE-2024-12705",
      "initial_release_date": "2024-01-29T00:00:00+00:00",
      "product_status:fixed": "77",
      "product_status:known_not_affected": "737",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "bind: bind9: DNS-over-HTTPS implementation suffers from multiple issues under heavy query load",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-12705.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-03T04:29:26Z",
      "cve": "CVE-2024-12705",
      "id": "CVE-2024-12705",
      "initial_release_date": "2025-01-30T04:11:03Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "281",
      "product_status:recommended": "46",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-12705",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-12705.json",
      "version": "34"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-12705\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-01-30T15:25:35.856020Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-01-30T15:25:02.726Z\"}}], \"cna\": {\"title\": \"DNS-over-HTTPS implementation suffers from multiple issues under heavy query load\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"value\": \"ISC would like to thank Jean-Fran\\u00e7ois Billaud for bringing this vulnerability to our attention.\"}], \"impacts\": [{\"descriptions\": [{\"lang\": \"en\", \"value\": \"By flooding a target resolver with HTTP/2 traffic and exploiting this flaw, an attacker could overwhelm the server, causing high CPU and/or memory usage and preventing other clients from establishing DoH connections. This would significantly impair the resolver\u0027s performance and effectively deny legitimate clients access to the DNS resolution service.\"}]}], \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"ISC\", \"product\": \"BIND 9\", \"versions\": [{\"status\": \"affected\", \"version\": \"9.18.0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"9.18.32\"}, {\"status\": \"affected\", \"version\": \"9.20.0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"9.20.4\"}, {\"status\": \"affected\", \"version\": \"9.21.0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"9.21.3\"}, {\"status\": \"affected\", \"version\": \"9.18.11-S1\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"9.18.32-S1\"}], \"defaultStatus\": \"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"We are not aware of any active exploits.\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to the patched release most closely related to your current version of BIND 9: 9.18.33, 9.20.5, 9.21.4, or 9.18.33-S1.\"}], \"datePublic\": \"2025-01-29T00:00:00.000Z\", \"references\": [{\"url\": \"https://kb.isc.org/docs/cve-2024-12705\", \"name\": \"CVE-2024-12705\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"The issue affects only the DNS-over-HTTPS protocol and does not apply to instances where DoH is not enabled.\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver\u0027s CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic.\\nThis issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770 Allocation of Resources Without Limits or Throttling\"}]}], \"providerMetadata\": {\"orgId\": \"404fd4d2-a609-4245-b543-2c944a302a22\", \"shortName\": \"isc\", \"dateUpdated\": \"2025-01-29T21:40:27.839Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-12705\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-01-30T15:27:00.887Z\", \"dateReserved\": \"2024-12-17T14:25:50.907Z\", \"assignerOrgId\": \"404fd4d2-a609-4245-b543-2c944a302a22\", \"datePublished\": \"2025-01-29T21:40:27.839Z\", \"assignerShortName\": \"isc\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

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.