{"id":"UBUNTU-CVE-2020-8620","details":"In BIND 9.15.6 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit.","modified":"2026-01-30T02:29:34.222638Z","published":"2020-08-20T00:00:00Z","related":["USN-4468-1"],"upstream":["CVE-2020-8620"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-8620"},{"type":"REPORT","url":"https://kb.isc.org/docs/cve-2020-8620"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4468-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-8620"}],"affected":[{"package":{"name":"bind9","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/bind9@1:9.16.1-0ubuntu2.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.16.1-0ubuntu2.3"}]}],"versions":["1:9.11.5.P4+dfsg-5.1ubuntu2","1:9.11.5.P4+dfsg-5.1ubuntu3","1:9.11.5.P4+dfsg-5.1ubuntu4","1:9.11.5.P4+dfsg-5.1ubuntu5","1:9.11.14+dfsg-1ubuntu1","1:9.11.14+dfsg-3ubuntu1","1:9.16.0-1ubuntu3","1:9.16.0-1ubuntu4","1:9.16.0-1ubuntu5","1:9.16.1-0ubuntu1","1:9.16.1-0ubuntu2","1:9.16.1-0ubuntu2.1","1:9.16.1-0ubuntu2.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"bind9","binary_version":"1:9.16.1-0ubuntu2.3"},{"binary_name":"bind9-dnsutils","binary_version":"1:9.16.1-0ubuntu2.3"},{"binary_name":"bind9-host","binary_version":"1:9.16.1-0ubuntu2.3"},{"binary_version":"1:9.16.1-0ubuntu2.3","binary_name":"bind9-libs"},{"binary_name":"bind9-utils","binary_version":"1:9.16.1-0ubuntu2.3"},{"binary_name":"bind9utils","binary_version":"1:9.16.1-0ubuntu2.3"},{"binary_name":"dnsutils","binary_version":"1:9.16.1-0ubuntu2.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-8620.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:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}