{"id":"CVE-2024-12705","state":"PUBLISHED","title":"DNS-over-HTTPS implementation suffers from multiple issues under heavy query load","description":"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.\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.","publishedAt":"2025-01-29T21:40:27.839Z","updatedAt":"2025-02-07T17:02:44.473Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"isc"},"assigner":"isc","products":["ISC BIND 9"],"affected":[{"vendor":"ISC","product":"BIND 9","defaultStatus":"unaffected","versions":[{"version":"9.18.0","status":"affected","lessThanOrEqual":"9.18.32","versionType":"custom"},{"version":"9.20.0","status":"affected","lessThanOrEqual":"9.20.4","versionType":"custom"},{"version":"9.21.0","status":"affected","lessThanOrEqual":"9.21.3","versionType":"custom"},{"version":"9.18.11-S1","status":"affected","lessThanOrEqual":"9.18.32-S1","versionType":"custom"}]}],"references":["https://kb.isc.org/docs/cve-2024-12705","https://security.netapp.com/advisory/ntap-20250207-0003/"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:06:50.777Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/12xxx/CVE-2024-12705.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-12705","state":"PUBLISHED","datePublished":"2025-01-29T21:40:27.839Z","dateUpdated":"2025-02-07T17:02:44.473Z","assignerShortName":"isc","assignerOrgId":"404fd4d2-a609-4245-b543-2c944a302a22","dateReserved":"2024-12-17T14:25:50.907Z"},"containers":{"cna":{"title":"DNS-over-HTTPS implementation suffers from multiple issues under heavy query load","descriptions":[{"lang":"en","value":"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.\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."}],"affected":[{"vendor":"ISC","product":"BIND 9","defaultStatus":"unaffected","versions":[{"version":"9.18.0","status":"affected","lessThanOrEqual":"9.18.32","versionType":"custom"},{"version":"9.20.0","status":"affected","lessThanOrEqual":"9.20.4","versionType":"custom"},{"version":"9.21.0","status":"affected","lessThanOrEqual":"9.21.3","versionType":"custom"},{"version":"9.18.11-S1","status":"affected","lessThanOrEqual":"9.18.32-S1","versionType":"custom"}]}],"references":[{"url":"https://kb.isc.org/docs/cve-2024-12705","name":"CVE-2024-12705","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","type":"CWE","description":"CWE-770 Allocation of Resources Without Limits or Throttling"}]}],"providerMetadata":{"shortName":"isc","orgId":"404fd4d2-a609-4245-b543-2c944a302a22","dateUpdated":"2025-01-29T21:40:27.839Z"},"datePublic":"2025-01-29T00:00:00.000Z","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's performance and effectively deny legitimate clients access to the DNS resolution service."}]}],"workarounds":[{"lang":"en","value":"The issue affects only the DNS-over-HTTPS protocol and does not apply to instances where DoH is not enabled."}],"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."}],"credits":[{"lang":"en","value":"ISC would like to thank Jean-François Billaud for bringing this vulnerability to our attention."}],"source":{"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-01-30T15:25:35.856020Z","id":"CVE-2024-12705","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-01-30T15:27:00.887Z"}},{"title":"CVE Program Container","references":[{"url":"https://security.netapp.com/advisory/ntap-20250207-0003/"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-02-07T17:02:44.473Z"}}]}}}