{"id":"UBUNTU-CVE-2018-8012","details":"No authentication/authorization is enforced when a server attempts to join a quorum in Apache ZooKeeper before 3.4.10, and 3.5.0-alpha through 3.5.3-beta. As a result an arbitrary end point could join the cluster and begin propagating counterfeit changes to the leader.","modified":"2026-04-22T12:04:28.561384Z","published":"2018-05-21T19:29:00Z","related":["USN-4789-1"],"upstream":["CVE-2018-8012"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-8012"},{"type":"REPORT","url":"https://issues.apache.org/jira/browse/ZOOKEEPER-1045"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2018/05/21/6"},{"type":"REPORT","url":"https://cwiki.apache.org/confluence/display/ZOOKEEPER/Server-Server+mutual+authentication"},{"type":"REPORT","url":"https://issues.apache.org/jira/secure/attachment/12840904/ZOOKEEPER-1045-br-3-4.patch"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/c75147028c1c79bdebd4f8fa5db2b77da85de2b05ecc0d54d708b393@%3Cdev.zookeeper.apache.org%3E"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4789-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-8012"}],"affected":[{"package":{"name":"zookeeper","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/zookeeper@3.4.5+dfsg-1ubuntu0.1~esm3?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.5+dfsg-1","3.4.5+dfsg-1ubuntu0.1~esm1","3.4.5+dfsg-1ubuntu0.1~esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.5+dfsg-1ubuntu0.1~esm3","binary_name":"libzookeeper-java"},{"binary_version":"3.4.5+dfsg-1ubuntu0.1~esm3","binary_name":"libzookeeper-mt2"},{"binary_version":"3.4.5+dfsg-1ubuntu0.1~esm3","binary_name":"libzookeeper-st2"},{"binary_version":"3.4.5+dfsg-1ubuntu0.1~esm3","binary_name":"libzookeeper2"},{"binary_version":"3.4.5+dfsg-1ubuntu0.1~esm3","binary_name":"python-zookeeper"},{"binary_version":"3.4.5+dfsg-1ubuntu0.1~esm3","binary_name":"zookeeper"},{"binary_version":"3.4.5+dfsg-1ubuntu0.1~esm3","binary_name":"zookeeper-bin"},{"binary_version":"3.4.5+dfsg-1ubuntu0.1~esm3","binary_name":"zookeeperd"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-8012.json"}},{"package":{"name":"zookeeper","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/zookeeper@3.4.8-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.8-1ubuntu0.1~esm1"}]}],"versions":["3.4.6-8","3.4.7-1","3.4.8-1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.8-1ubuntu0.1~esm1","binary_name":"libzookeeper-java"},{"binary_version":"3.4.8-1ubuntu0.1~esm1","binary_name":"libzookeeper-mt2"},{"binary_version":"3.4.8-1ubuntu0.1~esm1","binary_name":"libzookeeper-st2"},{"binary_version":"3.4.8-1ubuntu0.1~esm1","binary_name":"libzookeeper2"},{"binary_version":"3.4.8-1ubuntu0.1~esm1","binary_name":"python-zookeeper"},{"binary_version":"3.4.8-1ubuntu0.1~esm1","binary_name":"zookeeper"},{"binary_version":"3.4.8-1ubuntu0.1~esm1","binary_name":"zookeeper-bin"},{"binary_version":"3.4.8-1ubuntu0.1~esm1","binary_name":"zookeeperd"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-8012.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:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}