{"api_version":"1","generated_at":"2026-04-22T21:52:17+00:00","cve":"CVE-2016-7069","urls":{"html":"https://cve.report/CVE-2016-7069","api":"https://cve.report/api/cve/CVE-2016-7069.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2016-7069","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-7069"},"summary":{"title":"CVE-2016-7069","description":"An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash.","state":"PUBLIC","assigner":"secalert@redhat.com","published_at":"2018-09-11 13:29:00","updated_at":"2019-10-09 23:19:00"},"problem_types":["CWE-20"],"metrics":[],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069","name":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069","refsource":"CONFIRM","tags":["Issue Tracking","Third Party Advisory"],"title":"1483870 – (CVE-2016-7069) CVE-2016-7069 dnsdist: Crafted backend responses can cause a denial of service","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/bid/100509","name":"100509","refsource":"BID","tags":["Third Party Advisory","VDB Entry"],"title":"dnsdist CVE-2016-7069 Denial of Service Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html","name":"https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html","refsource":"CONFIRM","tags":["Patch","Vendor Advisory"],"title":"PowerDNS Security Advisory 2017-01 for dnsdist: Crafted backend responses can cause a denial of service — dnsdist  documentation","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-7069","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-7069","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2016","cve_id":"7069","vulnerable":"1","versionEndIncluding":"1.2.0","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"powerdns","cpe5":"dnsdist","cpe6":"*","cpe7":"*","cpe8":"x86","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2016-7069","qid":"754154","title":"SUSE Enterprise Linux Security Update for dnsdist (SUSE-SU-2023:2777-1)"},{"cve":"CVE-2016-7069","qid":"755904","title":"SUSE Enterprise Linux Security Update for dnsdist (SUSE-SU-2023:2760-2)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"secalert@redhat.com","ID":"CVE-2016-7069","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"dnsdist","version":{"version_data":[{"version_value":"1.2.0"}]}}]},"vendor_name":"Open-Xchange"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash."}]},"impact":{"cvss":[[{"vectorString":"5.9/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"}]]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-20"}]}]},"references":{"reference_data":[{"name":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069","refsource":"CONFIRM","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069"},{"name":"100509","refsource":"BID","url":"http://www.securityfocus.com/bid/100509"},{"name":"https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html","refsource":"CONFIRM","url":"https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html"}]}},"nvd":{"publishedDate":"2018-09-11 13:29:00","lastModifiedDate":"2019-10-09 23:19:00","problem_types":["CWE-20"],"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:dnsdist:*:*:x86:*:*:*:*:*","versionEndIncluding":"1.2.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2016","CveId":"7069","Ordinal":"93375","Title":"CVE-2016-7069","CVE":"CVE-2016-7069","Year":"2016"},"notes":[{"CveYear":"2016","CveId":"7069","Ordinal":"1","NoteData":"An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash.","Type":"Description","Title":null},{"CveYear":"2016","CveId":"7069","Ordinal":"2","NoteData":"2018-09-11","Type":"Other","Title":"Published"},{"CveYear":"2016","CveId":"7069","Ordinal":"3","NoteData":"2018-09-12","Type":"Other","Title":"Modified"}]}}}