{"id":"CVE-2025-8677","state":"PUBLISHED","title":"Resource exhaustion via malformed DNSKEY handling","description":"Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.\nThis issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.","publishedAt":"2025-10-22T15:43:10.369Z","updatedAt":"2025-11-04T21:15:09.556Z","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":"9.18.39","versionType":"custom"},{"version":"9.20.0","status":"affected","lessThanOrEqual":"9.20.13","versionType":"custom"},{"version":"9.21.0","status":"affected","lessThanOrEqual":"9.21.12","versionType":"custom"},{"version":"9.18.11-S1","status":"affected","lessThanOrEqual":"9.18.39-S1","versionType":"custom"},{"version":"9.20.9-S1","status":"affected","lessThanOrEqual":"9.20.13-S1","versionType":"custom"}]}],"references":["https://kb.isc.org/docs/cve-2025-8677","http://www.openwall.com/lists/oss-security/2025/10/22/1"],"weaknesses":["CWE-405"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/8xxx/CVE-2025-8677.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-8677","state":"PUBLISHED","datePublished":"2025-10-22T15:43:10.369Z","dateUpdated":"2025-11-04T21:15:09.556Z","assignerShortName":"isc","assignerOrgId":"404fd4d2-a609-4245-b543-2c944a302a22","dateReserved":"2025-08-06T17:32:34.755Z"},"containers":{"cna":{"title":"Resource exhaustion via malformed DNSKEY handling","descriptions":[{"lang":"en","value":"Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.\nThis issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1."}],"affected":[{"vendor":"ISC","product":"BIND 9","defaultStatus":"unaffected","versions":[{"version":"9.18.0","status":"affected","lessThanOrEqual":"9.18.39","versionType":"custom"},{"version":"9.20.0","status":"affected","lessThanOrEqual":"9.20.13","versionType":"custom"},{"version":"9.21.0","status":"affected","lessThanOrEqual":"9.21.12","versionType":"custom"},{"version":"9.18.11-S1","status":"affected","lessThanOrEqual":"9.18.39-S1","versionType":"custom"},{"version":"9.20.9-S1","status":"affected","lessThanOrEqual":"9.20.13-S1","versionType":"custom"}]}],"references":[{"url":"https://kb.isc.org/docs/cve-2025-8677","name":"CVE-2025-8677","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-405","lang":"en","type":"CWE","description":"CWE-405 Asymmetric Resource Consumption (Amplification)"}]}],"providerMetadata":{"shortName":"isc","orgId":"404fd4d2-a609-4245-b543-2c944a302a22","dateUpdated":"2025-10-22T15:43:10.369Z"},"datePublic":"2025-10-22T00:00:00.000Z","impacts":[{"descriptions":[{"lang":"en","value":"An attacker could overwhelm the server, significantly impacting performance and leading to denial of service for legitimate clients."}]}],"workarounds":[{"lang":"en","value":"No workarounds known."}],"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: 9.18.41, 9.20.15, 9.21.14, 9.18.41-S1, or 9.20.15-S1."}],"credits":[{"lang":"en","value":"ISC would like to thank Zuyao Xu and Xiang Li from the All-in-One Security and Privacy Laboratory at Nankai University for bringing this vulnerability to our attention."}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-10-22T17:29:14.290863Z","id":"CVE-2025-8677","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":"2025-10-22T17:29:39.128Z"}},{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2025/10/22/1"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-04T21:15:09.556Z"}}]}}}