Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 256D9200C2B for ; Thu, 16 Feb 2017 01:42:46 +0100 (CET) Received: by cust-asf.ponee.io (Postfix) id 24019160B70; Thu, 16 Feb 2017 00:42:46 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 6EA82160B5E for ; Thu, 16 Feb 2017 01:42:45 +0100 (CET) Received: (qmail 21149 invoked by uid 500); 16 Feb 2017 00:42:44 -0000 Mailing-List: contact dev-help@zookeeper.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@zookeeper.apache.org Delivered-To: mailing list dev@zookeeper.apache.org Received: (qmail 21138 invoked by uid 99); 16 Feb 2017 00:42:44 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 16 Feb 2017 00:42:44 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id 20F9F1865E5 for ; Thu, 16 Feb 2017 00:42:44 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -1.198 X-Spam-Level: X-Spam-Status: No, score=-1.198 tagged_above=-999 required=6.31 tests=[KAM_ASCII_DIVIDERS=0.8, KAM_LAZY_DOMAIN_SECURITY=1, RP_MATCHES_RCVD=-2.999, URIBL_BLOCKED=0.001] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id yIaqRp8fmARX for ; Thu, 16 Feb 2017 00:42:43 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id 2E34D5F613 for ; Thu, 16 Feb 2017 00:42:43 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 8AAE9E0416 for ; Thu, 16 Feb 2017 00:42:42 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id A43612411F for ; Thu, 16 Feb 2017 00:42:41 +0000 (UTC) Date: Thu, 16 Feb 2017 00:42:41 +0000 (UTC) From: "Patrick Hunt (JIRA)" To: dev@zookeeper.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (ZOOKEEPER-2693) DOS attack on wchp/wchc four letter words (4lw) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Thu, 16 Feb 2017 00:42:46 -0000 [ https://issues.apache.org/jira/browse/ZOOKEEPER-2693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15868897#comment-15868897 ] Patrick Hunt commented on ZOOKEEPER-2693: ----------------------------------------- I believe we need to get a CVE number assigned, step 8 here: https://www.apache.org/security/committers.html How about: "ZooKeeper DOS attack on four letter words (4lw)" > DOS attack on wchp/wchc four letter words (4lw) > ----------------------------------------------- > > Key: ZOOKEEPER-2693 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2693 > Project: ZooKeeper > Issue Type: Bug > Components: security, server > Affects Versions: 3.4.0, 3.5.1, 3.5.2 > Reporter: Patrick Hunt > Assignee: Michael Han > Priority: Blocker > Fix For: 3.4.10, 3.5.3 > > > The wchp/wchc four letter words can be exploited in a DOS attack on the ZK client port - typically 2181. The following POC attack was recently published on the web: > https://webcache.googleusercontent.com/search?q=cache:_CNGIz10PRYJ:https://www.exploit-db.com/exploits/41277/+&cd=14&hl=en&ct=clnk&gl=us > The most straightforward way to block this attack is to not allow access to the client port to non-trusted clients - i.e. firewall the ZooKeeper service and only allow access to trusted applications using it for coordination. -- This message was sent by Atlassian JIRA (v6.3.15#6346)