{"id":"UBUNTU-CVE-2020-35518","details":"When binding against a DN during authentication, the reply from 389-ds-base will be different whether the DN exists or not. This can be used by an unauthenticated attacker to check the existence of an entry in the LDAP database.","modified":"2026-04-22T12:40:22.897721Z","published":"2021-03-26T17:15:00Z","related":["USN-5231-1"],"upstream":["CVE-2020-35518"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-35518"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1905565"},{"type":"REPORT","url":"https://github.com/389ds/389-ds-base/issues/4480"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5231-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-35518"}],"affected":[{"package":{"name":"389-ds-base","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/389-ds-base@1.4.3.6-2ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.3.6-2ubuntu0.1~esm1"}]}],"versions":["1.4.1.6-4","1.4.1.6-4build1","1.4.2.4-1","1.4.2.4-1build1","1.4.3.2-1","1.4.3.2-1build1","1.4.3.6-2"],"ecosystem_specific":{"binaries":[{"binary_name":"389-ds","binary_version":"1.4.3.6-2ubuntu0.1~esm1"},{"binary_name":"389-ds-base","binary_version":"1.4.3.6-2ubuntu0.1~esm1"},{"binary_name":"389-ds-base-libs","binary_version":"1.4.3.6-2ubuntu0.1~esm1"},{"binary_name":"cockpit-389-ds","binary_version":"1.4.3.6-2ubuntu0.1~esm1"},{"binary_name":"python3-lib389","binary_version":"1.4.3.6-2ubuntu0.1~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-2020-35518.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}