{"id":"UBUNTU-CVE-2020-6097","details":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.","modified":"2026-01-30T01:15:52.106530Z","published":"2020-09-10T15:15:00Z","related":["USN-6334-1"],"upstream":["CVE-2020-6097"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-6097"},{"type":"REPORT","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2020-1029"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6334-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-6097"}],"affected":[{"package":{"name":"atftp","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/atftp@0.7.git20120829-3.1~0.16.04.1+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.16.04.1+esm1"}]}],"versions":["0.7.git20120829-2.1","0.7.git20120829-3.1~0.16.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.7.git20120829-3.1~0.16.04.1+esm1","binary_name":"atftp"},{"binary_version":"0.7.git20120829-3.1~0.16.04.1+esm1","binary_name":"atftpd"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-6097.json"}},{"package":{"name":"atftp","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/atftp@0.7.git20120829-3.1~0.18.04.1+esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.18.04.1+esm1"}]}],"versions":["0.7.git20120829-3","0.7.git20120829-3.1~0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.7.git20120829-3.1~0.18.04.1+esm1","binary_name":"atftp"},{"binary_version":"0.7.git20120829-3.1~0.18.04.1+esm1","binary_name":"atftpd"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-6097.json"}},{"package":{"name":"atftp","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/atftp@0.7.git20120829-3.1ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1ubuntu0.1"}]}],"versions":["0.7.git20120829-3.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.7.git20120829-3.1ubuntu0.1","binary_name":"atftp"},{"binary_version":"0.7.git20120829-3.1ubuntu0.1","binary_name":"atftpd"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-6097.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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}