From owner-freebsd-security@FreeBSD.ORG Fri Jan 10 03:14:48 2014 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 98455F7A; Fri, 10 Jan 2014 03:14:48 +0000 (UTC) Received: from hergotha.csail.mit.edu (wollman-1-pt.tunnel.tserv4.nyc4.ipv6.he.net [IPv6:2001:470:1f06:ccb::2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 4EBEA1D81; Fri, 10 Jan 2014 03:14:48 +0000 (UTC) Received: from hergotha.csail.mit.edu (localhost [127.0.0.1]) by hergotha.csail.mit.edu (8.14.7/8.14.7) with ESMTP id s0A3EjDl001292; Thu, 9 Jan 2014 22:14:45 -0500 (EST) (envelope-from wollman@hergotha.csail.mit.edu) Received: (from wollman@localhost) by hergotha.csail.mit.edu (8.14.7/8.14.4/Submit) id s0A3EhxI001289; Thu, 9 Jan 2014 22:14:43 -0500 (EST) (envelope-from wollman) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <21199.26019.698585.355699@hergotha.csail.mit.edu> Date: Thu, 9 Jan 2014 22:14:43 -0500 From: Garrett Wollman To: Eugene Grosbein Subject: UNS: Re: NTP security hole CVE-2013-5211? In-Reply-To: <52CEAD69.6090000@grosbein.net> References: <52CEAD69.6090000@grosbein.net> X-Mailer: VM 7.17 under 21.4 (patch 22) "Instant Classic" XEmacs Lucid X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (hergotha.csail.mit.edu [127.0.0.1]); Thu, 09 Jan 2014 22:14:45 -0500 (EST) X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED autolearn=disabled version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on hergotha.csail.mit.edu X-Mailman-Approved-At: Fri, 10 Jan 2014 03:38:06 +0000 Cc: freebsd-security@freebsd.org, Palle Girgensohn X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Jan 2014 03:14:48 -0000 < said: > Other than updating ntpd, you can filter out requests to 'monlist' command > with 'restrict ... noquery' option that disables some queries for > the internal ntpd status, including 'monlist'. For a "pure" client, I would suggest "restrict default ignore" ought to be the norm. (Followed by entries to unrestrict localhost over v4 and v6.) -GAWollman