{"id":"UBUNTU-CVE-2020-8622","details":"In BIND 9.0.0 -\u003e 9.11.21, 9.12.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, also affects 9.9.3-S1 -\u003e 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.","modified":"2026-04-22T14:29:09.847716Z","published":"2020-08-20T00:00:00Z","related":["USN-4468-1","USN-4468-2"],"upstream":["CVE-2020-8622"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-8622"},{"type":"REPORT","url":"https://kb.isc.org/docs/cve-2020-8622"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4468-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4468-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-8622"}],"affected":[{"package":{"name":"bind9","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/bind9@1:9.9.5.dfsg-3ubuntu0.19+esm3?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.9.5.dfsg-3ubuntu0.19+esm3"}]}],"versions":["1:9.9.3.dfsg.P2-4ubuntu1","1:9.9.3.dfsg.P2-4ubuntu2","1:9.9.3.dfsg.P2-4ubuntu3","1:9.9.5.dfsg-2","1:9.9.5.dfsg-3","1:9.9.5.dfsg-3ubuntu0.1","1:9.9.5.dfsg-3ubuntu0.2","1:9.9.5.dfsg-3ubuntu0.3","1:9.9.5.dfsg-3ubuntu0.4","1:9.9.5.dfsg-3ubuntu0.5","1:9.9.5.dfsg-3ubuntu0.6","1:9.9.5.dfsg-3ubuntu0.7","1:9.9.5.dfsg-3ubuntu0.8","1:9.9.5.dfsg-3ubuntu0.9","1:9.9.5.dfsg-3ubuntu0.10","1:9.9.5.dfsg-3ubuntu0.11","1:9.9.5.dfsg-3ubuntu0.12","1:9.9.5.dfsg-3ubuntu0.13","1:9.9.5.dfsg-3ubuntu0.14","1:9.9.5.dfsg-3ubuntu0.15","1:9.9.5.dfsg-3ubuntu0.16","1:9.9.5.dfsg-3ubuntu0.17","1:9.9.5.dfsg-3ubuntu0.18","1:9.9.5.dfsg-3ubuntu0.19","1:9.9.5.dfsg-3ubuntu0.19+esm1","1:9.9.5.dfsg-3ubuntu0.19+esm2"],"ecosystem_specific":{"availability":"Available 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