{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-11232","assignerOrgId":"404fd4d2-a609-4245-b543-2c944a302a22","state":"PUBLISHED","assignerShortName":"isc","dateReserved":"2025-10-01T15:15:46.992Z","datePublished":"2025-10-29T18:02:39.421Z","dateUpdated":"2025-11-04T21:09:09.184Z"},"containers":{"cna":{"providerMetadata":{"orgId":"404fd4d2-a609-4245-b543-2c944a302a22","shortName":"isc","dateUpdated":"2025-10-29T18:02:39.421Z"},"title":"Invalid characters cause assert","datePublic":"2025-10-29T00:00:00.000Z","affected":[{"vendor":"ISC","product":"Kea","versions":[{"version":"3.0.1","lessThanOrEqual":"3.0.1","status":"affected","versionType":"custom"},{"version":"3.1.1","lessThanOrEqual":"3.1.2","status":"affected","versionType":"custom"},{"version":"2.6.0","lessThanOrEqual":"2.6.4","status":"unaffected","versionType":"custom"},{"version":"2.7.0","lessThanOrEqual":"2.7.9","status":"unaffected","versionType":"custom"},{"version":"3.0.0","lessThanOrEqual":"3.0.0","status":"unaffected","versionType":"custom"},{"version":"3.1.0","lessThanOrEqual":"3.1.0","status":"unaffected","versionType":"custom"}],"defaultStatus":"unaffected"}],"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":[{"lang":"en","type":"CWE","cweId":"CWE-823","description":"CWE-823 Use of Out-of-range Pointer Offset"}]}],"descriptions":[{"lang":"en","value":"To trigger the issue, three configuration parameters must have specific settings: \"hostname-char-set\" must be left at the default setting, which is \"[^A-Za-z0-9.-]\"; \"hostname-char-replacement\" must be empty (the default); and \"ddns-qualifying-suffix\" must *NOT* be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly.\nThis issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2."}],"impacts":[{"descriptions":[{"lang":"en","value":"A denial of service from the repeated attacks against the Kea server"}]}],"workarounds":[{"lang":"en","value":"Setting \"hostname-char-replacement\" to anything other than an empty value (suggestion: \"x\") is an effective workaround to this issue, regardless of other settings."}],"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 Kea: 3.0.2 or 3.1.3."}],"credits":[{"lang":"en","value":"ISC would like to thank Siniša Uskoković and Ralf Steuer from Vienna University of Economics and Business for bringing this vulnerability to our attention."}],"references":[{"url":"https://kb.isc.org/docs/cve-2025-11232","name":"CVE-2025-11232","tags":["vendor-advisory"]}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-10-29T18:22:07.119804Z","id":"CVE-2025-11232","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-29T18:22:23.455Z"}},{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2025/10/29/5"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-04T21:09:09.184Z"}}]}}