{"id":"UBUNTU-CVE-2019-20020","details":"A stack-based buffer over-read was discovered in ReadNextStructField in mat5.c in matio 1.5.17.","modified":"2026-04-22T12:16:29.380816Z","published":"2019-12-27T02:15:00Z","upstream":["CVE-2019-20020"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-20020"},{"type":"REPORT","url":"https://github.com/tbeu/matio/issues/128"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-20020"}],"affected":[{"package":{"name":"libmatio","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libmatio@1.5.2-1ubuntu1+esm1?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.1-1","1.5.2-1","1.5.2-1ubuntu1","1.5.2-1ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmatio2","binary_version":"1.5.2-1ubuntu1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20020.json"}},{"package":{"name":"libmatio","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libmatio@1.5.3-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.2-3build2","1.5.3-1","1.5.3-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmatio2","binary_version":"1.5.3-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20020.json"}},{"package":{"name":"libmatio","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libmatio@1.5.11-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.10-1","1.5.11-1","1.5.11-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmatio4","binary_version":"1.5.11-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20020.json"}},{"package":{"name":"libmatio","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libmatio@1.5.17-3ubuntu0.1~esm2?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.13-3","1.5.17-3","1.5.17-3ubuntu0.1~esm1","1.5.17-3ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"libmatio9","binary_version":"1.5.17-3ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20020.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:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}