{"id":"UBUNTU-CVE-2017-14491","details":"Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DNS response.","modified":"2026-01-30T00:41:54.314789Z","published":"2017-10-02T00:00:00Z","related":["USN-3430-1","USN-3430-2"],"upstream":["CVE-2017-14491"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-14491"},{"type":"REPORT","url":"https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3430-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3430-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-14491"}],"affected":[{"package":{"name":"dnsmasq","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/dnsmasq@2.68-1ubuntu0.2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.68-1ubuntu0.2"}]}],"versions":["2.66-4ubuntu1","2.67-1","2.68-1","2.68-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"dnsmasq","binary_version":"2.68-1ubuntu0.2"},{"binary_name":"dnsmasq-base","binary_version":"2.68-1ubuntu0.2"},{"binary_name":"dnsmasq-utils","binary_version":"2.68-1ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-14491.json"}},{"package":{"name":"dnsmasq","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/dnsmasq@2.75-1ubuntu0.16.04.3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.75-1ubuntu0.16.04.3"}]}],"versions":["2.75-1","2.75-1ubuntu0.16.04.1","2.75-1ubuntu0.16.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"dnsmasq","binary_version":"2.75-1ubuntu0.16.04.3"},{"binary_name":"dnsmasq-base","binary_version":"2.75-1ubuntu0.16.04.3"},{"binary_name":"dnsmasq-utils","binary_version":"2.75-1ubuntu0.16.04.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-14491.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]}