{"id":"USN-6048-1","summary":"ZenLib vulnerability","details":"It was discovered that ZenLib doesn't check the return value of a specific\noperation before using it. An attacker could use a specially crafted input\nto crash programs using the library.\n","modified":"2026-06-29T13:50:51.060099824Z","published":"2023-04-28T10:01:57Z","related":["UBUNTU-CVE-2020-36646"],"upstream":["CVE-2020-36646","UBUNTU-CVE-2020-36646"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6048-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-36646"}],"affected":[{"package":{"name":"libzen","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libzen?arch=source&distro=trusty%2Fesm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.29-1ubuntu0.1~esm1"}]}],"versions":["0.4.29-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"0.4.29-1ubuntu0.1~esm1","binary_name":"libzen0"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"id":"CVE-2020-36646","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6048-1.json"}},{"package":{"name":"libzen","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libzen?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.32-1ubuntu0.16.04.1+esm1"}]}],"versions":["0.4.29-1ubuntu2","0.4.32-1","0.4.32-1ubuntu0.16.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libzen0v5","binary_version":"0.4.32-1ubuntu0.16.04.1+esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-36646","severity":[{"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:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6048-1.json"}},{"package":{"name":"libzen","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libzen?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.37-1ubuntu0.18.04.1"}]}],"versions":["0.4.36-1","0.4.37-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libzen0v5","binary_version":"0.4.37-1ubuntu0.18.04.1"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"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:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-36646"}],"ecosystem":"Ubuntu:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6048-1.json"}},{"package":{"name":"libzen","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libzen?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.37-1ubuntu0.20.04.1"}]}],"versions":["0.4.37-1","0.4.37-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libzen0v5","binary_version":"0.4.37-1ubuntu0.20.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6048-1.json","cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"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:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-36646"}]}}}],"schema_version":"1.7.5"}