{"api_version":"1","generated_at":"2026-04-30T06:01:29+00:00","cve":"CVE-2017-15120","urls":{"html":"https://cve.report/CVE-2017-15120","api":"https://cve.report/api/cve/CVE-2017-15120.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2017-15120","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-15120"},"summary":{"title":"CVE-2017-15120","description":"An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.","state":"PUBLIC","assigner":"secalert@redhat.com","published_at":"2018-07-27 15:29:00","updated_at":"2019-10-09 23:24:00"},"problem_types":["CWE-476"],"metrics":[],"references":[{"url":"http://seclists.org/oss-sec/2017/q4/382","name":"[oss-security] 20171211 PowerDNS Security Advisory 2017-08","refsource":"MLIST","tags":["Mailing List","Patch","Third Party Advisory"],"title":"oss-sec: PowerDNS Security Advisory 2017-08","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.debian.org/security/2017/dsa-4063","name":"DSA-4063","refsource":"DEBIAN","tags":["Third Party Advisory"],"title":"Debian -- Security Information -- DSA-4063-1 pdns-recursor","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html","name":"https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html","refsource":"CONFIRM","tags":["Patch","Vendor Advisory"],"title":"PowerDNS Security Advisory 2017-08: Crafted CNAME answer can cause a denial of service — PowerDNS Recursor  documentation","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120","name":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120","refsource":"CONFIRM","tags":["Issue Tracking","Third Party Advisory"],"title":"1524930 – (CVE-2017-15120) CVE-2017-15120 pdns-recursor: Crafted CNAME answer can cause a denial of service","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/bid/106335","name":"106335","refsource":"BID","tags":["Third Party Advisory","VDB Entry"],"title":"Malformed Request","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-15120","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-15120","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2017","cve_id":"15120","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"8.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"15120","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"9.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"15120","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"8.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"15120","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"9.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"15120","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"powerdns","cpe5":"recursor","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"15120","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"powerdns","cpe5":"recursor","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"secalert@redhat.com","ID":"CVE-2017-15120","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"pdns-recursor","version":{"version_data":[{"version_value":"4.0.8"}]}}]},"vendor_name":"PowerDNS"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service."}]},"impact":{"cvss":[[{"vectorString":"7.5/CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"}]]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-476"}]}]},"references":{"reference_data":[{"name":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120","refsource":"CONFIRM","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120"},{"name":"https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html","refsource":"CONFIRM","url":"https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html"},{"name":"DSA-4063","refsource":"DEBIAN","url":"https://www.debian.org/security/2017/dsa-4063"},{"name":"[oss-security] 20171211 PowerDNS Security Advisory 2017-08","refsource":"MLIST","url":"http://seclists.org/oss-sec/2017/q4/382"},{"name":"106335","refsource":"BID","url":"http://www.securityfocus.com/bid/106335"}]}},"nvd":{"publishedDate":"2018-07-27 15:29:00","lastModifiedDate":"2019-10-09 23:24:00","problem_types":["CWE-476"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*","versionEndExcluding":"4.0.8","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2017","CveId":"15120","Ordinal":"112622","Title":"CVE-2017-15120","CVE":"CVE-2017-15120","Year":"2017"},"notes":[{"CveYear":"2017","CveId":"15120","Ordinal":"1","NoteData":"An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.","Type":"Description","Title":null},{"CveYear":"2017","CveId":"15120","Ordinal":"2","NoteData":"2018-07-27","Type":"Other","Title":"Published"},{"CveYear":"2017","CveId":"15120","Ordinal":"3","NoteData":"2018-12-28","Type":"Other","Title":"Modified"}]}}}