{"id":"CVE-2017-14495","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-14495","generatedAt":"2026-10-28T21:23:47.795Z","title":"Memory leak in dnsmasq before 2.78, when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service (memory consumption) via vectors involving DNS response creation.","description":"Memory leak in dnsmasq before 2.78, when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service (memory consumption) via vectors involving DNS response creation.","published":"2017-10-03T01:29:02.000Z","lastModified":"2026-06-17T01:06:15.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-772"],"affected":["canonical/ubuntu linux","debian/debian linux","redhat/enterprise linux desktop","redhat/enterprise linux server","redhat/enterprise linux workstation","thekelleys/dnsmasq"],"epss":{"score":0.85403,"percentile":0.99717,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.81393,"percentile":0.99631},{"date":"2026-09-22","score":0.84323,"percentile":0.99686},{"date":"2026-10-21","score":0.85907,"percentile":0.9973}]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2017-10-02","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":42945,"kind":"exploit","title":"Dnsmasq < 2.78 - Lack of free() Denial of Service","url":"https://www.exploit-db.com/exploits/42945","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/dos/42945.py","file":"exploits/multiple/dos/42945.py","published":"2017-10-02","added":"2017-10-02","updated":"2017-10-02","author":"Google Security Research","type":"dos","platform":"multiple","port":null,"verified":true,"codes":["CVE-2017-14495"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://raw.githubusercontent.com/google/security-research-pocs/master/vulnerabilities/dnsmasq/CVE-2017-14495.py"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 85.4%, higher than 100% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html","tags":["Issue Tracking","Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://nvidia.custhelp.com/app/answers/detail/a_id/4561","source":"cve@mitre.org"},{"url":"http://thekelleys.org.uk/dnsmasq/CHANGELOG","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=51eadb692a5123b9838e5a68ecace3ac579a3a45","source":"cve@mitre.org"},{"url":"http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt","source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2017/dsa-3989","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/101085","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/101977","source":"cve@mitre.org"},{"url":"http://www.securitytracker.com/id/1039474","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://www.ubuntu.com/usn/USN-3430-1","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.ubuntu.com/usn/USN-3430-2","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2017:2836","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://access.redhat.com/security/vulnerabilities/3199382","tags":["Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf","source":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201710-27","source":"cve@mitre.org"},{"url":"https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/42945/","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://www.kb.cert.org/vuls/id/973527","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html","source":"cve@mitre.org"},{"url":"https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html","source":"cve@mitre.org"},{"url":"https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html","tags":["Issue Tracking","Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://nvidia.custhelp.com/app/answers/detail/a_id/4561","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://thekelleys.org.uk/dnsmasq/CHANGELOG","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=51eadb692a5123b9838e5a68ecace3ac579a3a45","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2017/dsa-3989","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/101085","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/101977","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1039474","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-3430-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-3430-2","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:2836","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/security/vulnerabilities/3199382","tags":["Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201710-27","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/42945/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.kb.cert.org/vuls/id/973527","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-14495","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."}