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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1547 Apache ZooKeeper Quorum Peer mutual authentication 22 May 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Zookeeper Publisher: Apache Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Provide Misleading Information -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-8012 Original Bulletin: https://issues.apache.org/jira/browse/ZOOKEEPER-1045 - --------------------------BEGIN INCLUDED TEXT-------------------- CVE-2018-8012: Apache ZooKeeper Quorum Peer mutual authentication Severity: Critical Vendor: The Apache Software Foundation Versions Affected: ZooKeeper prior to 3.4.10 ZooKeeper 3.5.0-alpha through 3.5.3-beta The unsupported ZooKeeper 1.x through 3.3.x versions may be also affected Description: No authentication/authorization is enforced when a server attempts to join a quorum. As a result an arbitrary end point could join the cluster and begin propagating counterfeit changes to the leader. Mitigation: Upgrade to 3.4.10 or later (3.5.4-beta or later if on the 3.5 branch) and enable Quorum Peer mutual authentication. Alternately ensure the ensemble election/quorum communication is protected by a firewall as this will mitigate the issue. See the documentation for more details on correct cluster administration. Credit: This issue was identified by Foldi Tamas and Eugene Koontz References: https://issues.apache.org/jira/browse/ZOOKEEPER-1045 https://cwiki.apache.org/confluence/display/ZOOKEEPER/Server-Server+mutual+= authentication http://zookeeper.apache.org/doc/current/zookeeperAdmin.html - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWwOpBox+lLeg9Ub1AQgiCxAAi/RdRLkwD1y/NXHlJ5Wg5vRoKQLCxeDi FVDAcQK+LL6mBEnQ/QMPXeChLChYrYEjWPTwCwXdO0zbaE9dUC/6bZWrMuugCHrq KgM7a+VD/RyMzUA5FtBEQi/pBDsAQvyVMW6BeS63PXuHqyOvuApOUlkAHpWlLyb3 2Fi1cXilB2miHiMlF4s555pp56Csvy3uoT2bLGeT06vwxAXJh3DE0btMafkVZc4V C8pPLchn4QjaC+8fqBMQL93zNq1oa3CjL+tqxQxHRq5wF2x6Bq6lmJtjHnsxfPYN vctOaxgSwRZTF77TMXXhk9apoS4yksEyG0MK5dGS8bVxCXhmNFzSH9/PgqNWk+iZ tM5rzSe5qVlNJbdBEN2sQLd/eFm7oH8bC2GpMu6GKP17QCs6b152gBhr2iIHkPvQ WeRzzBJovt7EemxpDkHwkqkNW6fJbpeVuN0fF53k6nvlNC70knTWz03S2q5kjV/b 72FReH87DH7mhYj/2c67Gxy67eCO+1+EpxksJU5AVmhxiA+U3AySUP1KH3n6C3p4 R0tKFYZLDykSKiwZ9t1ZrcYbygTb1JbCbckcxaD/RYkWLbQGy8IPQnYLXL9dFqCT rdq3FKkiDVcNBc9c0QnfifZx0va84Tc+piW8H5dVuTEpnor47Hb0HEQyt9dmd2d0 dcO4gdo93lI= =ho94 -----END PGP SIGNATURE-----