{"id":"CVE-2016-7069","details":"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.","modified":"2026-03-14T09:20:29.561936Z","published":"2018-09-11T13:29:00.840Z","related":["SUSE-SU-2023:2760-1","SUSE-SU-2023:2760-2","SUSE-SU-2023:2777-1","openSUSE-SU-2024:12731-1"],"references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/100509"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7069"},{"type":"FIX","url":"https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-01.html"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-7069.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"1.2.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}