From owner-freebsd-announce@FreeBSD.ORG Thu Apr 8 12:28:39 2004 Return-Path: Delivered-To: freebsd-announce@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 24F3716A4CE for ; Thu, 8 Apr 2004 12:28:39 -0700 (PDT) Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.86.163]) by mx1.FreeBSD.org (Postfix) with ESMTP id 59F0143D45 for ; Thu, 8 Apr 2004 12:28:38 -0700 (PDT) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.12.11/8.12.11) with ESMTP id i38JSbVo028396 for ; Thu, 8 Apr 2004 21:28:37 +0200 (CEST) (envelope-from phk@critter.freebsd.dk) To: announce@freebsd.org Date: Thu, 08 Apr 2004 21:28:37 +0200 Message-ID: <28395.1081452517@critter.freebsd.dk> From: Poul-Henning Kamp X-Mailman-Approved-At: Tue, 13 Apr 2004 02:01:15 -0700 Subject: [FreeBSD-Announce] Fundraising for FreeBSD development. X-BeenThere: freebsd-announce@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Project Announcements [moderated] List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Apr 2004 19:28:39 -0000 http://people.freebsd.org/~phk/funding.html Poul-Henning -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. From owner-freebsd-announce@FreeBSD.ORG Thu Apr 15 12:14:14 2004 Return-Path: Delivered-To: freebsd-announce@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6FBBC16A52D; Thu, 15 Apr 2004 12:14:14 -0700 (PDT) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5E1B643D46; Thu, 15 Apr 2004 12:14:14 -0700 (PDT) (envelope-from security-advisories@freebsd.org) Received: from freefall.freebsd.org (nectar@localhost [127.0.0.1]) i3FJEEbv004433; Thu, 15 Apr 2004 12:14:14 -0700 (PDT) (envelope-from security-advisories@freebsd.org) Received: (from nectar@localhost) by freefall.freebsd.org (8.12.10/8.12.10/Submit) id i3FJEE96004431; Thu, 15 Apr 2004 12:14:14 -0700 (PDT) (envelope-from security-advisories@freebsd.org) Date: Thu, 15 Apr 2004 12:14:14 -0700 (PDT) Message-Id: <200404151914.i3FJEE96004431@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 Precedence: bulk Subject: [FreeBSD-Announce] FreeBSD Security Advisory FreeBSD-SA-04:07.cvs X-BeenThere: freebsd-announce@freebsd.org X-Mailman-Version: 2.1.1 Reply-To: security-advisories@freebsd.org List-Id: Project Announcements [moderated] List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Apr 2004 19:14:14 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-04:07.cvs Security Advisory The FreeBSD Project Topic: CVS path validation errors Category: contrib Module: contrib_cvs Announced: 2004-04-15 Credits: Sebastian Krahmer Derek Robert Price Affects: All FreeBSD versions prior to 4.10-RELEASE Corrected: 2004-04-15 15:35:26 UTC (RELENG_4, 4.10-BETA) 2004-04-15 15:42:50 UTC (RELENG_5_2, 5.2.1-RELEASE-p5) 2004-04-15 15:59:05 UTC (RELENG_4_9, 4.9-RELEASE-p18) 2004-04-15 15:59:54 UTC (RELENG_4_8, 4.8-RELEASE-p5) CVE Name: CAN-2004-0180 FreeBSD only: NO For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit . I. Background The Concurrent Versions System (CVS) is a version control system. It may be used to access a repository locally, or to access a `remote repository' using a number of different methods. When accessing a remote repository, the target machine runs the CVS server to fulfill client requests. II. Problem Description Two programming errors were discovered in which path names handled by CVS were not properly validated. In one case, the CVS client accepts absolute path names from the server when determining which files to update. In another case, the CVS server accepts relative path names from the client when determining which files to transmit, including those containing references to parent directories (`../'). III. Impact These programming errors generally only have a security impact when dealing with remote CVS repositories. A malicious CVS server may cause a CVS client to overwrite arbitrary files on the client's system. A CVS client may request RCS files from a remote system other than those in the repository specified by $CVSROOT. These RCS files need not be part of any CVS repository themselves. IV. Workaround Disable remote CVS repository operations. V. Solution Perform one of the following: 1) Upgrade your vulnerable system to 4-STABLE; or to the RELENG_5_2, RELENG_4_9, or RELENG_4_8 security branch dated after the correction date. 2) To patch your present system: The following patches have been verified to apply to FreeBSD 4.8, 4.9, 5.1, and 5.2 systems. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. # fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-04:07/cvs.patch # fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-04:07/cvs.patch.asc b) Execute the following commands as root: # cd /usr/src # patch < /path/to/patch # cd /usr/src/gnu/usr.bin/cvs # make obj && make depend && make && make install VI. Correction details The following list contains the revision numbers of each file that was corrected in FreeBSD. Branch Revision Path - ------------------------------------------------------------------------- RELENG_4 src/contrib/cvs/src/client.c 1.2.2.7 src/contrib/cvs/src/modules.c 1.1.1.5.2.4 RELENG_5_2 src/UPDATING 1.282.2.13 src/sys/conf/newvers.sh 1.56.2.12 src/contrib/cvs/src/client.c 1.10.4.1 src/contrib/cvs/src/modules.c 1.1.1.8.6.2 RELENG_4_9 src/UPDATING 1.73.2.89.2.6 src/sys/conf/newvers.sh 1.44.2.32.2.6 src/contrib/cvs/src/client.c 1.2.2.6.4.1 src/contrib/cvs/src/modules.c 1.1.1.5.2.3.4.1 RELENG_4_8 src/UPDATING 1.73.2.80.2.21 src/sys/conf/newvers.sh 1.44.2.29.2.19 src/contrib/cvs/src/client.c 1.2.2.6.2.1 src/contrib/cvs/src/modules.c 1.1.1.5.2.3.2.1 - ------------------------------------------------------------------------- VII. References http://ccvs.cvshome.org/servlets/NewsItemView?newsID=102 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAft2oFdaIBMps37IRAm4uAKCU/QlA4N1hKaTdk3gCCfv0JHB1DQCfe7zf /ykriUr0/2wxi+lK17lQJl0= =mNSU -----END PGP SIGNATURE-----