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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2554 zookeeper -- Denial Of Service 12 October 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: zookeeper Publisher: FreeBSD Operating System: FreeBSD Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-5637 Reference: ESB-2017.2034 ESB-2017.1398 Original Bulletin: http://www.vuxml.org/freebsd/af61b271-9e47-4db0-a0f6-29fb032236a3.html - --------------------------BEGIN INCLUDED TEXT-------------------- zookeeper -- Denial Of Service Affected packages zookeeper < 3.4.10 Details VuXML ID af61b271-9e47-4db0-a0f6-29fb032236a3 Discovery 2017-10-09 Entry 2017-10-10 zookeeper developers report: Two four letter word commands "wchp/wchc" are CPU intensive and could cause spike of CPU utilization on Apache ZooKeeper server if abused, which leads to the server unable to serve legitimate client requests. Apache ZooKeeper thru version 3.4.9 and 3.5.2 suffer from this issue, fixed in 3.4.10, 3.5.3, and later. References CVE Name CVE-2017-5637 URL https://lists.apache.org/thread.html/58170aeb7a681d462b7fa31cae81110cbb749d2dc83c5736a0bb8370@%3Cdev.zookeeper.apache.org%3E - --------------------------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: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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 iQIVAwUBWd6rEIx+lLeg9Ub1AQiFMRAAn7eTZh52kS6Wpl4isrgJySjKUp0bEEyT N/walVEAQzBXsnx9r2uLVcEcAc1diG0Kk4AZ9Q+eS78YS9G838shQQxYQ6jSXO2C 7SrIEgUwzOnXagQ1XyxTEdXumdxR7L0F0Ieu8yzWVh1/jMg3EhTwRSP/AcJd0ecT rAMJzWHCR0vFim6KyCeUfp8LCSvSquOo1sswhs2EsDJ5pZ9eSBu8dAdkhWdYDsDV 5BgzVUKUtGsTtPXJfCLne9A3Sepj4A410lXkwZGR51mt5q9QcY0RjfYNZfJ8Q4bt X+k0H8AtgD1/Mfe2IPcUYNGR07DKAGGGts6/oU1BNqVRHT2DB/77851uIRG0vI9j DjRgTLI0BlAEDK6WssZqGARQAhme0R/vfFjxJ2cNuInhLtquweNHH1z+7N8BlPqK 27USVm/1DCJ03Q0nkqhzrawkg4lTjM3ykgfxKCHyqZUNTWs7wqnFE9EA7+4m4CpG CgAh67X/n6FlcPhsW67Ul+sF2M2bZAMLFzCjbEF5+z4VVB4dv+eM3zRRlQ9SS0yx C70wFdwvD6oxllBBYo4mXtFvgAlDsIn5lUvUczo7jeKS18aZz0/b9UiIe1CLbBSt NDjmlYTXqLEwa9ffV6jY80s8/lpEmmMT5igN52BrGGbjXDCl2stpeLiGEJ/6vRlU s19QBE55SQE= =7e5X -----END PGP SIGNATURE-----