{"id":"CVE-2018-5740","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-5740","generatedAt":"2026-10-28T19:50:54.399Z","title":"\"deny-answer-aliases\" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers.","description":"\"deny-answer-aliases\" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c. Affects BIND 9.7.0->9.8.8, 9.9.0->9.9.13, 9.10.0->9.10.8, 9.11.0->9.11.4, 9.12.0->9.12.2, 9.13.0->9.13.2.","published":"2019-01-16T20:29:01.000Z","lastModified":"2026-06-17T02:00:42.000Z","status":"Modified","sourceIdentifier":"security-officer@isc.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-617"],"affected":["isc/bind","redhat/enterprise linux desktop","redhat/enterprise linux server","redhat/enterprise linux server aus","redhat/enterprise linux server eus","redhat/enterprise linux workstation","debian/debian linux","netapp/data ontap edge","canonical/ubuntu linux","hp/hp-ux","opensuse/leap"],"epss":{"score":0.5962,"percentile":0.99121,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 59.6%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.html","tags":["Mailing List","Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00027.html","tags":["Mailing List","Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"http://www.securityfocus.com/bid/105055","tags":["Third Party Advisory","VDB Entry"],"source":"security-officer@isc.org"},{"url":"http://www.securitytracker.com/id/1041436","tags":["Third Party Advisory","VDB Entry"],"source":"security-officer@isc.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:2570","tags":["Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:2571","tags":["Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"https://kb.isc.org/docs/aa-01639","tags":["Vendor Advisory"],"source":"security-officer@isc.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/08/msg00033.html","tags":["Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html","tags":["Mailing List","Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"https://security.gentoo.org/glsa/201903-13","tags":["Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"https://security.netapp.com/advisory/ntap-20180926-0003/","tags":["Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03927en_us","tags":["Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"https://usn.ubuntu.com/3769-1/","tags":["Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"https://usn.ubuntu.com/3769-2/","tags":["Third Party Advisory"],"source":"security-officer@isc.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00026.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00027.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/105055","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1041436","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:2570","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:2571","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://kb.isc.org/docs/aa-01639","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/08/msg00033.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201903-13","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20180926-0003/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03927en_us","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3769-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3769-2/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-5740","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}