{"id":"UBUNTU-CVE-2020-22217","details":"Buffer overflow vulnerability in c-ares before 1_16_1 thru 1_17_0 via function ares_parse_soa_reply in ares_parse_soa_reply.c.","modified":"2026-04-22T14:12:32.110229Z","published":"2023-08-22T19:16:00Z","related":["USN-6376-1"],"upstream":["CVE-2020-22217"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-22217"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6376-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-22217"}],"affected":[{"package":{"name":"c-ares","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/c-ares@1.10.0-3ubuntu0.2+esm3?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.0-2","1.10.0-3","1.10.0-3ubuntu0.1","1.10.0-3ubuntu0.2","1.10.0-3ubuntu0.2+esm1","1.10.0-3ubuntu0.2+esm2","1.10.0-3ubuntu0.2+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"libc-ares2","binary_version":"1.10.0-3ubuntu0.2+esm3"}],"priority_reason":"Only an out-of-bounds read, so denial of service only"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-22217.json"}},{"package":{"name":"c-ares","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/c-ares@1.14.0-1ubuntu0.2+esm2?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13.0-2","1.13.0-3","1.14.0-1","1.14.0-1ubuntu0.1","1.14.0-1ubuntu0.2","1.14.0-1ubuntu0.2+esm1","1.14.0-1ubuntu0.2+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"libc-ares2","binary_version":"1.14.0-1ubuntu0.2+esm2"}],"priority_reason":"Only an out-of-bounds read, so denial of service only"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-22217.json"}},{"package":{"name":"c-ares","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/c-ares@1.15.0-1ubuntu0.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.0-1ubuntu0.4"}]}],"versions":["1.15.0-1build1","1.15.0-1ubuntu0.1","1.15.0-1ubuntu0.2","1.15.0-1ubuntu0.3"],"ecosystem_specific":{"binaries":[{"binary_name":"libc-ares2","binary_version":"1.15.0-1ubuntu0.4"}],"priority_reason":"Only an out-of-bounds read, so denial of service only","availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-22217.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}