{"id":"UBUNTU-CVE-2020-25709","details":"A flaw was found in OpenLDAP. This flaw allows an attacker who can send a malicious packet to be processed by OpenLDAP’s slapd server, to trigger an assertion failure. The highest threat from this vulnerability is to system availability.","modified":"2026-04-22T12:35:57.593628Z","published":"2020-11-13T00:00:00Z","related":["USN-4634-1","USN-4634-2"],"upstream":["CVE-2020-25709"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-25709"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4634-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4634-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-25709"}],"affected":[{"package":{"name":"openldap","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/openldap@2.4.31-1+nmu2ubuntu8.5+esm4?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.31-1+nmu2ubuntu8.5+esm4"}]}],"versions":["2.4.31-1+nmu2ubuntu3","2.4.31-1+nmu2ubuntu4","2.4.31-1+nmu2ubuntu5","2.4.31-1+nmu2ubuntu8","2.4.31-1+nmu2ubuntu8.1","2.4.31-1+nmu2ubuntu8.2","2.4.31-1+nmu2ubuntu8.3","2.4.31-1+nmu2ubuntu8.4","2.4.31-1+nmu2ubuntu8.5","2.4.31-1+nmu2ubuntu8.5+esm1","2.4.31-1+nmu2ubuntu8.5+esm2","2.4.31-1+nmu2ubuntu8.5+esm3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"ldap-utils","binary_version":"2.4.31-1+nmu2ubuntu8.5+esm4"},{"binary_name":"libldap-2.4-2","binary_version":"2.4.31-1+nmu2ubuntu8.5+esm4"},{"binary_name":"slapd","binary_version":"2.4.31-1+nmu2ubuntu8.5+esm4"},{"binary_name":"slapd-smbk5pwd","binary_version":"2.4.31-1+nmu2ubuntu8.5+esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25709.json"}},{"package":{"name":"openldap","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/openldap@2.4.42+dfsg-2ubuntu3.11?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.42+dfsg-2ubuntu3.11"}]}],"versions":["2.4.41+dfsg-1ubuntu2","2.4.41+dfsg-1ubuntu3","2.4.42+dfsg-2ubuntu1","2.4.42+dfsg-2ubuntu3","2.4.42+dfsg-2ubuntu3.1","2.4.42+dfsg-2ubuntu3.2","2.4.42+dfsg-2ubuntu3.3","2.4.42+dfsg-2ubuntu3.4","2.4.42+dfsg-2ubuntu3.5","2.4.42+dfsg-2ubuntu3.6","2.4.42+dfsg-2ubuntu3.7","2.4.42+dfsg-2ubuntu3.8","2.4.42+dfsg-2ubuntu3.9","2.4.42+dfsg-2ubuntu3.10"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"ldap-utils","binary_version":"2.4.42+dfsg-2ubuntu3.11"},{"binary_name":"libldap-2.4-2","binary_version":"2.4.42+dfsg-2ubuntu3.11"},{"binary_name":"slapd","binary_version":"2.4.42+dfsg-2ubuntu3.11"},{"binary_name":"slapd-smbk5pwd","binary_version":"2.4.42+dfsg-2ubuntu3.11"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25709.json"}},{"package":{"name":"openldap","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/openldap@2.4.45+dfsg-1ubuntu1.8?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.45+dfsg-1ubuntu1.8"}]}],"versions":["2.4.45+dfsg-1ubuntu1","2.4.45+dfsg-1ubuntu1.1","2.4.45+dfsg-1ubuntu1.2","2.4.45+dfsg-1ubuntu1.3","2.4.45+dfsg-1ubuntu1.4","2.4.45+dfsg-1ubuntu1.5","2.4.45+dfsg-1ubuntu1.6","2.4.45+dfsg-1ubuntu1.7"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"ldap-utils","binary_version":"2.4.45+dfsg-1ubuntu1.8"},{"binary_name":"libldap-2.4-2","binary_version":"2.4.45+dfsg-1ubuntu1.8"},{"binary_name":"libldap-common","binary_version":"2.4.45+dfsg-1ubuntu1.8"},{"binary_version":"2.4.45+dfsg-1ubuntu1.8","binary_name":"slapd"},{"binary_name":"slapd-smbk5pwd","binary_version":"2.4.45+dfsg-1ubuntu1.8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25709.json"}},{"package":{"name":"openldap","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/openldap@2.4.49+dfsg-2ubuntu1.5?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.49+dfsg-2ubuntu1.5"}]}],"versions":["2.4.48+dfsg-1ubuntu1","2.4.48+dfsg-1ubuntu2","2.4.48+dfsg-1ubuntu3","2.4.48+dfsg-1ubuntu4","2.4.49+dfsg-1ubuntu1","2.4.49+dfsg-2ubuntu1","2.4.49+dfsg-2ubuntu1.2","2.4.49+dfsg-2ubuntu1.3","2.4.49+dfsg-2ubuntu1.4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"2.4.49+dfsg-2ubuntu1.5","binary_name":"ldap-utils"},{"binary_name":"libldap-2.4-2","binary_version":"2.4.49+dfsg-2ubuntu1.5"},{"binary_name":"libldap-common","binary_version":"2.4.49+dfsg-2ubuntu1.5"},{"binary_version":"2.4.49+dfsg-2ubuntu1.5","binary_name":"slapd"},{"binary_name":"slapd-contrib","binary_version":"2.4.49+dfsg-2ubuntu1.5"},{"binary_name":"slapd-smbk5pwd","binary_version":"2.4.49+dfsg-2ubuntu1.5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25709.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:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}