{"id":"UBUNTU-CVE-2020-19860","details":"When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload.","modified":"2026-04-22T12:32:25.512908Z","published":"2022-01-21T14:15:00Z","related":["USN-5257-1","USN-5257-2"],"upstream":["CVE-2020-19860"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-19860"},{"type":"REPORT","url":"https://github.com/NLnetLabs/ldns/issues/50"},{"type":"REPORT","url":"https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3"},{"type":"REPORT","url":"https://github.com/NLnetLabs/ldns/commit/4e9861576a600a5ecfa16ec2de853c90dd9ce276"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5257-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5257-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-19860"}],"affected":[{"package":{"name":"ldns","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/ldns@1.6.17-8ubuntu0.1+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.17-8ubuntu0.1+esm1"}]}],"versions":["1.6.17-5","1.6.17-7","1.6.17-8","1.6.17-8ubuntu0.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"1.6.17-8ubuntu0.1+esm1","binary_name":"ldnsutils"},{"binary_name":"libldns1","binary_version":"1.6.17-8ubuntu0.1+esm1"},{"binary_name":"python-ldns","binary_version":"1.6.17-8ubuntu0.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-19860.json"}},{"package":{"name":"ldns","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ldns@1.7.0-3ubuntu4.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.0-3ubuntu4.1"}]}],"versions":["1.7.0-1ubuntu1","1.7.0-3ubuntu1","1.7.0-3ubuntu2","1.7.0-3ubuntu4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"ldnsutils","binary_version":"1.7.0-3ubuntu4.1"},{"binary_name":"libldns2","binary_version":"1.7.0-3ubuntu4.1"},{"binary_name":"python-ldns","binary_version":"1.7.0-3ubuntu4.1"},{"binary_name":"python3-ldns","binary_version":"1.7.0-3ubuntu4.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-19860.json"}},{"package":{"name":"ldns","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/ldns@1.7.0-4.1ubuntu1+esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.0-4.1ubuntu1+esm1"}]}],"versions":["1.7.0-3ubuntu8","1.7.0-4","1.7.0-4ubuntu1","1.7.0-4.1ubuntu1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"ldnsutils","binary_version":"1.7.0-4.1ubuntu1+esm1"},{"binary_name":"libldns2","binary_version":"1.7.0-4.1ubuntu1+esm1"},{"binary_name":"python-ldns","binary_version":"1.7.0-4.1ubuntu1+esm1"},{"binary_name":"python3-ldns","binary_version":"1.7.0-4.1ubuntu1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-19860.json"}},{"package":{"name":"ldns","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/ldns@1.7.1-2ubuntu4+esm1?arch=source&distro=esm-apps/jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.1-2ubuntu4+esm1"}]}],"versions":["1.7.1-2build1","1.7.1-2ubuntu1","1.7.1-2ubuntu3","1.7.1-2ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_name":"ldnsutils","binary_version":"1.7.1-2ubuntu4+esm1"},{"binary_name":"libldns3","binary_version":"1.7.1-2ubuntu4+esm1"},{"binary_name":"python3-ldns","binary_version":"1.7.1-2ubuntu4+esm1"}],"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-2020-19860.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}