From owner-freebsd-announce Tue Dec 11 9: 1: 4 2001 Delivered-To: freebsd-announce@freebsd.org Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21]) by hub.freebsd.org (Postfix) with ESMTP id 9ACB737B41E; Tue, 11 Dec 2001 09:00:44 -0800 (PST) Received: (from nectar@localhost) by freefall.freebsd.org (8.11.6/8.11.6) id fBBH0hY72011; Tue, 11 Dec 2001 09:00:43 -0800 (PST) (envelope-from security-advisories@freebsd.org) Date: Tue, 11 Dec 2001 09:00:43 -0800 (PST) Message-Id: <200112111700.fBBH0hY72011@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: nectar set sender to security-advisories@freebsd.org using -f From: FreeBSD Security Advisories To: FreeBSD Security Advisories Subject: FreeBSD Security Advisory FreeBSD-SA-01:65.libgtop Reply-To: security-advisories@freebsd.org Sender: owner-freebsd-announce@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org -----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-01:65 Security Advisory FreeBSD, Inc. Topic: Buffer overflow in libgtop_server Category: ports Module: libgtop Announced: 2001-12-11 Credits: Flavio Veloso Affects: Ports collection prior to the correction date Corrected: 2001-11-29 15:06:19 UTC FreeBSD only: NO I. Background libgtop is a library for gtop, the GNOME version of the top command. The top command is a tool to display and update information about the top cpu processes. II. Problem Description The libgtop port versions prior to libgtop-1.0.12_1 contain a stack buffer overflow in libgtop_server, allowing an arbitrary amount of data from the client application (assumed to be gtop) to be read into a fixed-sized buffer. A local attacker can exploit this bug to cause libgtop_server to execute arbitrary code. libgtop_server runs with increased privileges as a member of group kmem, which allows it to read kernel memory (but not write it). A process with the ability to read from kernel memory can monitor privileged data such as network traffic, disk buffers and terminal activity, and may be able to leverage this to obtain further privileges on the local system or on other systems, including root privileges. The libgtop port is not installed by default, nor is it "part of FreeBSD" as such: it is part of the FreeBSD ports collection, which contains over 6000 third-party applications in a ready-to-install format. The ports collection shipped with FreeBSD 4.4 contains this problem since it was discovered after the release. FreeBSD makes no claim about the security of these third-party applications, although an effort is underway to provide a security audit of the most security-critical ports. III. Impact A successful exploit of this stack buffer overflow would allow an attacker arbitrary access to kernel memory, possibly acquiring information allowing further increases in privileges. No exploit is known to exist at this time, and it is not known whether this buffer overflow is exploitable even in theory. In any case, local access to the machine on which libgtop_server is running is required to attempt an attack. IV. Workaround 1) Deinstall the libgtop port/package if you have it installed. OR 2) Remove the setgid bit from the libgtop_server executable by executing the following command as root: # chmod g-s `which libgtop_server` V. Solution 1) Upgrade your entire ports collection and rebuild the port. 2) Deinstall the old package and install a new package dated after the correction date, obtained from the following directories: [i386] ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/devel/libgtop-1.0.12_1.tar.gz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/devel/libgtop-1.0.12_1.tar.gz [alpha] Packages are not automatically generated for the alpha architecture at this time due to lack of build resources. NOTE: It may be several days before updated packages are available. Be sure to check the file creation date on the package, because the version number of the software has not changed. 3) Download a new port skeleton for the libgtop port from: http://www.freebsd.org/ports/ and use it to rebuild the port. 4) Use the portcheckout utility to automate option (3) above. The portcheckout port is available in /usr/ports/devel/portcheckout or the package can be obtained from: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/devel/portcheckout-2.0.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/devel/portcheckout-2.0.tgz VI. Correction details The following list contains the revision numbers of each file that was corrected in the FreeBSD ports collection. Path Revision - ------------------------------------------------------------------------- ports/devel/libgtop/Makefile 1.45 ports/devel/libgtop/files/patch-src::daemon::gnuserv.c 1.1 - ------------------------------------------------------------------------- VII. References -----BEGIN PGP SIGNATURE----- Comment: http://www.nectar.cc/pgp iQCVAwUBPBY6xlUuHi5z0oilAQHwmQQAh3KtiIcKjmw5e9B2ABmdRYlwWFVEgN9F QlUj8NqiDUaekQoLb5p923Y8VC0/9e/alRrnvd4kcmVmU8PUpXNaMp4cHz1mHnLQ 7w4QQ+qzmEOGJFOiUjE21FY8gPR3HH2rKiIOJyeHezRkUqhWMqlERJ08hnmtqjib 2TukQesxbzw= =gyPX -----END PGP SIGNATURE----- This is the moderated mailing list freebsd-announce. The list contains announcements of new FreeBSD capabilities, important events and project milestones. See also the FreeBSD Web pages at http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-announce" in the body of the message From owner-freebsd-announce Tue Dec 11 9: 1:49 2001 Delivered-To: freebsd-announce@freebsd.org Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21]) by hub.freebsd.org (Postfix) with ESMTP id 76DF137B41F; Tue, 11 Dec 2001 09:00:57 -0800 (PST) Received: (from nectar@localhost) by freefall.freebsd.org (8.11.6/8.11.6) id fBBH0vC72090; Tue, 11 Dec 2001 09:00:57 -0800 (PST) (envelope-from security-advisories@freebsd.org) Date: Tue, 11 Dec 2001 09:00:57 -0800 (PST) Message-Id: <200112111700.fBBH0vC72090@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: nectar set sender to security-advisories@freebsd.org using -f From: FreeBSD Security Advisories To: FreeBSD Security Advisories Subject: FreeBSD Security Advisory FreeBSD-SA-01:66.thttpd Reply-To: security-advisories@freebsd.org Sender: owner-freebsd-announce@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org -----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-01:66 Security Advisory FreeBSD, Inc. Topic: thttpd port contains remotely vulnerability Category: ports Module: thttpd Announced: 2001-12-11 Credits: GOBBLES SECURITY Affects: Ports collection prior to the correction date Corrected: 2001-11-22 00:10:56 UTC FreeBSD only: no I. Background thttpd is a simple, small, portable, fast, and secure HTTP server. II. Problem Description In auth_check(), there is an off-by-one error in computing the amount of memory needed for storing a NUL terminated string. Specifically, a stack buffer of 500 bytes is used to store a string of up to 501 bytes including the terminating NUL. III. Impact Due to the location of the affected buffer on the stack, this bug can be exploited using ``The poisoned NUL byte'' technique (see references). A remote attacker can hijack the thttpd process, obtaining whatever privileges it has. By default, the thttpd process runs as user `nobody'. IV. Workaround 1) Deinstall the thttpd port/package if you have it installed. V. Solution 1) Upgrade your entire ports collection and rebuild the port. 2) Deinstall the old package and install a new package dated after the correction date, obtained from the following directories: [i386] ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/www/thttpd-2.22.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/www/thttpd-2.22.tgz [alpha] Packages are not automatically generated for the alpha architecture at this time due to lack of build resources. 3) Download a new port skeleton for the thttpd port from: http://www.freebsd.org/ports/ and use it to rebuild the port. 4) Use the portcheckout utility to automate option (3) above. The portcheckout port is available in /usr/ports/devel/portcheckout or the package can be obtained from: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/devel/portcheckout-2.0.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/devel/portcheckout-2.0.tgz VI. Correction details The following list contains the revision numbers of each file that was corrected in the FreeBSD ports collection. Path Revision - ------------------------------------------------------------------------- ports/www/thttpd/Makefile 1.23 ports/www/thttpd/distinfo 1.20 ports/www/thttpd/files/patch-fdwatch.c removed - ------------------------------------------------------------------------- VII. References -----BEGIN PGP SIGNATURE----- Comment: http://www.nectar.cc/pgp iQCVAwUBPBY6x1UuHi5z0oilAQEHrgQAgscqPT0AVJcotWgO1t8WuJQyNukLHnDS qGa8LT7ebuMY/Nl6JJzTYudwmr16RtJNPSYTfk1eHPWgAYzKyiNM7uMU87ZDplpM FOggQbjdhFPNUE3WK8P2cmdm+7mrZbdWGJmvZpYH4TRNn6yQVV4F8tENl+nPu3I+ 5IGxGqgr2vA= =1MCH -----END PGP SIGNATURE----- This is the moderated mailing list freebsd-announce. The list contains announcements of new FreeBSD capabilities, important events and project milestones. See also the FreeBSD Web pages at http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-announce" in the body of the message From owner-freebsd-announce Thu Dec 13 5:18:48 2001 Delivered-To: freebsd-announce@freebsd.org Received: from ardbeg.meer.net (ardbeg.meer.net [209.157.152.23]) by hub.freebsd.org (Postfix) with ESMTP id 852B237B417; Wed, 12 Dec 2001 22:19:25 -0800 (PST) Received: from meer.meer.net (mail.meer.net [209.157.152.14]) by ardbeg.meer.net (8.11.3/8.11.3) with ESMTP id fBD6JPD85355; Wed, 12 Dec 2001 22:19:25 -0800 (PST) Received: from neville-neil.com ([209.157.133.226]) by meer.meer.net (8.9.3/8.9.3/meer) with ESMTP id WAA1011588; Wed, 12 Dec 2001 22:18:31 -0800 (PST) Message-Id: <200112130618.WAA1011588@meer.meer.net> X-Mailer: exmh version 2.3.1 01/18/2001 with nmh-1.0.4 To: freebsd-announce@freebsd.org, freebsd-hackers@freebsd.org Subject: Call for Works In Progress talks for BSDCon '02 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 12 Dec 2001 22:18:31 -0800 From: "George V. Neville-Neil" Sender: owner-freebsd-announce@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hi Folks, This is the first call for participation in the Works In Progress session at BSD Con '02 in San Francisco. Works In Progress talks are 5 to 10 minute presentations of the work you're doing with BSD that would be of interest to other people. Please send a subject, short abstract (3-4 sentences), and a contact email to bsdcon-wips@usenix.org. Do NOT reply directly to this email. General information on the conference can be found at: http://www.usenix.org/events/bsdcon02/ Thanks, George V. Neville-Neil (WIPs Coordinator) PS Apologies if you get this more than once. -- George V. Neville-Neil gnn@neville-neil.com NIC:GN82 "Those who would trade liberty for temporary security deserve neither" - Benjamin Franklin ----- End forwarded message ----- -- NOTE: To fetch an updated copy of my GPG key which has not expired, finger kris@FreeBSD.org This is the moderated mailing list freebsd-announce. The list contains announcements of new FreeBSD capabilities, important events and project milestones. See also the FreeBSD Web pages at http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-announce" in the body of the message From owner-freebsd-announce Thu Dec 13 5:26: 8 2001 Delivered-To: freebsd-announce@freebsd.org Received: from vnode.vmunix.com (vnode.vmunix.com [209.112.4.20]) by hub.freebsd.org (Postfix) with ESMTP id 3710837B419 for ; Tue, 11 Dec 2001 21:28:15 -0800 (PST) Received: by vnode.vmunix.com (Postfix, from userid 1005) id 911411C; Wed, 12 Dec 2001 00:28:14 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by vnode.vmunix.com (Postfix) with ESMTP id 75F1D49A15 for ; Wed, 12 Dec 2001 00:28:14 -0500 (EST) Date: Wed, 12 Dec 2001 00:28:14 -0500 (EST) From: Chris Coleman To: announce@freebsd.org Subject: FreeBSD Book Updated to 2nd Edition Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-announce@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Daemon News is pleased to announce the release of the second edition of Annelise Anderson's popular book, "FreeBSD: An Open-Source Operating System for your PC". New in this edition: * Install CD updated to FreeBSD 4.4-RELEASE * Text updated to cover up to FreeBSD 4.4 as well * All-new cover art * Additional changes and new text in several sections The book covers versions 4.1 - 4.4 of FreeBSD, and is designed with the new user in mind. If you have a friend who you are trying to introduce to FreeBSD, this is *the* book to get them. It comes with a single install CD. You can also add a 4 CD set. The book is over 400 pages and costs $24.00 US. It is in stock now. We also have first edition copies, which have been signed by Annelise Anderson, still available. Second Edition : http://www.bsdmall.com/freebosforyo.html First Edition : http://www.bsdmall.com/freebopopsys.html All FreeBSD Stuff : http://www.bsdmall.com/freebsd1.html All BSD : http://www.bsdmall.com/ Chris Coleman Editor in Chief Daemon News E-Zine http://www.daemonnews.org Print Magazine http://magazine.daemonnews.org Open Packages http://www.openpackages.org This is the moderated mailing list freebsd-announce. The list contains announcements of new FreeBSD capabilities, important events and project milestones. See also the FreeBSD Web pages at http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-announce" in the body of the message