From owner-freebsd-security-notifications@FreeBSD.ORG Wed Jan 7 21:36:20 2009 Return-Path: Delivered-To: freebsd-security-notifications@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 97C8E10657A7; Wed, 7 Jan 2009 21:36:20 +0000 (UTC) (envelope-from security-advisories@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 80AF18FC22; Wed, 7 Jan 2009 21:36:20 +0000 (UTC) (envelope-from security-advisories@freebsd.org) Received: from freefall.freebsd.org (simon@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n07LaKPV049714; Wed, 7 Jan 2009 21:36:20 GMT (envelope-from security-advisories@freebsd.org) Received: (from simon@localhost) by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n07LaK8K049712; Wed, 7 Jan 2009 21:36:20 GMT (envelope-from security-advisories@freebsd.org) Date: Wed, 7 Jan 2009 21:36:20 GMT Message-Id: <200901072136.n07LaK8K049712@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: simon set sender to security-advisories@freebsd.org using -f From: FreeBSD Security Advisories To: FreeBSD Security Advisories Precedence: bulk Cc: Subject: FreeBSD Security Advisory FreeBSD-SA-09:01.lukemftpd X-BeenThere: freebsd-security-notifications@freebsd.org X-Mailman-Version: 2.1.5 Reply-To: freebsd-security@freebsd.org List-Id: "Moderated Security Notifications \[moderated, low volume\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Jan 2009 21:36:22 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-09:01.lukemftpd Security Advisory The FreeBSD Project Topic: Cross-site request forgery in lukemftpd(8) Category: core Module: lukemftpd Announced: 2009-01-07 Credits: Maksymilian Arciemowicz Affects: All supported versions of FreeBSD. Corrected: 2009-01-07 20:17:55 UTC (RELENG_7, 7.1-STABLE) 2009-01-07 20:17:55 UTC (RELENG_7_1, 7.1-RELEASE-p1) 2009-01-07 20:17:55 UTC (RELENG_7_0, 7.0-RELEASE-p8) 2009-01-07 20:17:55 UTC (RELENG_6, 6.4-STABLE) 2009-01-07 20:17:55 UTC (RELENG_6_4, 6.4-RELEASE-p2) 2009-01-07 20:17:55 UTC (RELENG_6_3, 6.3-RELEASE-p8) CVE Name: CVE-2008-4247 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit . I. Background lukemftpd(8) is a general-purpose implementation of File Transfer Protocol (FTP) server that is shipped with the FreeBSD base system. It is not enabled in default installations but can be enabled as either an inetd(8) server, or a standard-alone server. A cross-site request forgery attack is a type of malicious exploit that is mainly targeted to a web browser, by tricking a user trusted by the site into visiting a specially crafted URL, which in turn executes a command which performs some privileged operations on behalf of the trusted user on the victim site. II. Problem Description The lukemftpd(8) server splits long commands into several requests. This may result in the server executing a command which is hidden inside another very long command. III. Impact This could, with a specifically crafted command, be used in a cross-site request forgery attack. FreeBSD systems running lukemftpd(8) server could act as a point of privilege escalation in an attack against users using web browser to access trusted FTP sites. IV. Workaround No workaround is available, but systems not running FTP servers are not vulnerable. Systems not running the FreeBSD lukemftpd(8) server are not affected, but users of other ftp daemons are advised to take care since several other ftp daemons are known to have related bugs. NOTE WELL: lukemftpd(8) is a different implementation of an FTP server than ftpd(8). V. Solution Perform one of the following: 1) Upgrade your vulnerable system to 6-STABLE, or 7-STABLE, or to the RELENG_7_1, RELENG_7_0, RELENG_6_4, or RELENG_6_3 security branch dated after the correction date. 2) To patch your present system: The following patches have been verified to apply to FreeBSD 6.3, 6.4, 7.0, and 7.1 systems. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. # fetch http://security.FreeBSD.org/patches/SA-09:01/lukemftpd.patch # fetch http://security.FreeBSD.org/patches/SA-09:01/lukemftpd.patch.asc b) Execute the following commands as root: # cd /usr/src # patch < /path/to/patch # cd /usr/src/libexec/lukemftpd # 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. CVS: Branch Revision Path - ------------------------------------------------------------------------- RELENG_6 src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.5.2.2 src/contrib/lukemftpd/src/extern.h 1.1.1.4.2.2 src/contrib/lukemftpd/src/ftpd.c 1.4.2.2 RELENG_6_4 src/UPDATING 1.416.2.40.2.5 src/sys/conf/newvers.sh 1.69.2.18.2.8 src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.5.2.1.6.1 src/contrib/lukemftpd/src/extern.h 1.1.1.4.2.1.6.1 src/contrib/lukemftpd/src/ftpd.c 1.4.2.1.6.2 RELENG_6_3 src/UPDATING 1.416.2.37.2.13 src/sys/conf/newvers.sh 1.69.2.15.2.12 src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.5.2.1.4.1 src/contrib/lukemftpd/src/extern.h 1.1.1.4.2.1.4.1 src/contrib/lukemftpd/src/ftpd.c 1.4.2.1.4.1 RELENG_7 src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.6.2.1 src/contrib/lukemftpd/src/extern.h 1.1.1.5.2.1 src/contrib/lukemftpd/src/ftpd.c 1.5.2.1 RELENG_7_1 src/UPDATING 1.507.2.13.2.4 src/sys/conf/newvers.sh 1.72.2.9.2.5 src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.6.6.1 src/contrib/lukemftpd/src/extern.h 1.1.1.5.6.1 src/contrib/lukemftpd/src/ftpd.c 1.5.6.2 RELENG_7_0 src/UPDATING 1.507.2.3.2.12 src/sys/conf/newvers.sh 1.72.2.5.2.12 src/contrib/lukemftpd/src/ftpcmd.y 1.1.1.6.4.1 src/contrib/lukemftpd/src/extern.h 1.1.1.5.4.1 src/contrib/lukemftpd/src/ftpd.c 1.5.4.1 - ------------------------------------------------------------------------- Subversion: Branch/path Revision - ------------------------------------------------------------------------- stable/6/ r186872 releng/6.4/ r186872 releng/6.3/ r186872 stable/7/ r186872 releng/7.1/ r186872 releng/7.0/ r186872 - ------------------------------------------------------------------------- VII. References http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4247 http://security.freebsd.org/advisories/FreeBSD-SA-08:12.ftpd.asc The latest revision of this advisory is available at http://security.FreeBSD.org/advisories/FreeBSD-SA-09:01.lukemftpd.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iD8DBQFJZR5UFdaIBMps37IRApUJAKCEGZggeEjPC67j5Tmxl2fEDJ9sIQCfTAKn vpOXC5jix3XiB7wxGKrvNJM= =qPEc -----END PGP SIGNATURE----- From owner-freebsd-security-notifications@FreeBSD.ORG Wed Jan 7 21:37:19 2009 Return-Path: Delivered-To: freebsd-security-notifications@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E786E1065BE2; Wed, 7 Jan 2009 21:37:19 +0000 (UTC) (envelope-from security-advisories@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 3E3F98FC2D; Wed, 7 Jan 2009 21:37:18 +0000 (UTC) (envelope-from security-advisories@freebsd.org) Received: from freefall.freebsd.org (simon@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n07LbIsp049792; Wed, 7 Jan 2009 21:37:18 GMT (envelope-from security-advisories@freebsd.org) Received: (from simon@localhost) by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n07LbIL3049790; Wed, 7 Jan 2009 21:37:18 GMT (envelope-from security-advisories@freebsd.org) Date: Wed, 7 Jan 2009 21:37:18 GMT Message-Id: <200901072137.n07LbIL3049790@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: simon set sender to security-advisories@freebsd.org using -f From: FreeBSD Security Advisories To: FreeBSD Security Advisories Precedence: bulk Cc: Subject: FreeBSD Security Advisory FreeBSD-SA-09:02.openssl X-BeenThere: freebsd-security-notifications@freebsd.org X-Mailman-Version: 2.1.5 Reply-To: freebsd-security@freebsd.org List-Id: "Moderated Security Notifications \[moderated, low volume\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Jan 2009 21:37:21 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-09:02.openssl Security Advisory The FreeBSD Project Topic: OpenSSL incorrectly checks for malformed signatures Category: contrib Module: openssl Announced: 2009-01-07 Credits: Google Security Team Affects: All FreeBSD releases Corrected: 2009-01-07 21:03:41 UTC (RELENG_7, 7.1-STABLE) 2009-01-07 20:17:55 UTC (RELENG_7_1, 7.1-RELEASE-p1) 2009-01-07 20:17:55 UTC (RELENG_7_0, 7.0-RELEASE-p8) 2009-01-07 20:17:55 UTC (RELENG_6, 6.4-STABLE) 2009-01-07 20:17:55 UTC (RELENG_6_4, 6.4-RELEASE-p2) 2009-01-07 20:17:55 UTC (RELENG_6_3, 6.3-RELEASE-p8) CVE Name: CVE-2008-5077 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit . I. Background FreeBSD includes software from the OpenSSL Project. The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library. II. Problem Description The EVP_VerifyFinal() function from OpenSSL is used to determine if a digital signature is valid. The SSL layer in OpenSSL uses EVP_VerifyFinal(), which in several places checks the return value incorrectly and treats verification errors as a good signature. This is only a problem for DSA and ECDSA keys. III. Impact For applications using OpenSSL for SSL connections, an invalid SSL certificate may be interpreted as valid. This could for example be used by an attacker to perform a man-in-the-middle attack. Other applications which use the OpenSSL EVP API may similarly be affected. IV. Workaround For a server an RSA signed certificate may be used instead of DSA or ECDSA based certificate. Note that Mozilla Firefox does not use OpenSSL and thus is not affected. V. Solution Perform one of the following: 1) Upgrade your vulnerable system to 6-STABLE, or 7-STABLE, or to the RELENG_7_1, RELENG_7_0, RELENG_6_4, or RELENG_6_3 security branch dated after the correction date. 2) To patch your present system: The following patches have been verified to apply to FreeBSD 6.3, 6.4, 7.0, and 7.1 systems. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. [FreeBSD 7.x] # fetch http://security.FreeBSD.org/patches/SA-09:02/openssl.patch # fetch http://security.FreeBSD.org/patches/SA-09:02/openssl.patch.asc [FreeBSD 6.x] # fetch http://security.FreeBSD.org/patches/SA-09:02/openssl6.patch # fetch http://security.FreeBSD.org/patches/SA-09:02/openssl6.patch.asc b) Execute the following commands as root: # cd /usr/src # patch < /path/to/patch # cd /usr/src/secure/lib/libssl # make obj && make depend && make && make install # cd /usr/src/secure/usr.bin/openssl # make obj && make depend && make && make install NOTE: On the amd64 platform, the above procedure will not update the lib32 (i386 compatibility) libraries. On amd64 systems where the i386 compatibility libraries are used, the operating system should instead be recompiled as described in VI. Correction details The following list contains the revision numbers of each file that was corrected in FreeBSD. CVS: Branch Revision Path - ------------------------------------------------------------------------- RELENG_6 src/crypto/openssl/apps/speed.c 1.13.2.1 src/crypto/openssl/apps/verify.c 1.1.1.5.12.1 src/crypto/openssl/apps/x509.c 1.1.1.10.2.1 src/crypto/openssl/apps/spkac.c 1.1.1.4.12.1 src/crypto/openssl/ssl/s2_srvr.c 1.12.2.1 src/crypto/openssl/ssl/s3_clnt.c 1.1.1.12.2.1 src/crypto/openssl/ssl/s3_srvr.c 1.1.1.14.2.2 src/crypto/openssl/ssl/s2_clnt.c 1.13.2.2 RELENG_6_4 src/UPDATING 1.416.2.40.2.5 src/sys/conf/newvers.sh 1.69.2.18.2.8 src/crypto/openssl/apps/speed.c 1.13.12.1 src/crypto/openssl/apps/verify.c 1.1.1.5.24.1 src/crypto/openssl/apps/x509.c 1.1.1.10.12.1 src/crypto/openssl/apps/spkac.c 1.1.1.4.24.1 src/crypto/openssl/ssl/s2_srvr.c 1.12.12.1 src/crypto/openssl/ssl/s3_clnt.c 1.1.1.12.12.1 src/crypto/openssl/ssl/s3_srvr.c 1.1.1.14.2.1.6.1 src/crypto/openssl/ssl/s2_clnt.c 1.13.2.1.6.1 RELENG_6_3 src/UPDATING 1.416.2.37.2.13 src/sys/conf/newvers.sh 1.69.2.15.2.12 src/crypto/openssl/apps/speed.c 1.13.10.1 src/crypto/openssl/apps/verify.c 1.1.1.5.22.1 src/crypto/openssl/apps/x509.c 1.1.1.10.10.1 src/crypto/openssl/apps/spkac.c 1.1.1.4.22.1 src/crypto/openssl/ssl/s2_srvr.c 1.12.10.1 src/crypto/openssl/ssl/s3_clnt.c 1.1.1.12.10.1 src/crypto/openssl/ssl/s3_srvr.c 1.1.1.14.2.1.4.1 src/crypto/openssl/ssl/s2_clnt.c 1.13.2.1.4.1 RELENG_7 src/crypto/openssl/apps/speed.c 1.15.2.1 src/crypto/openssl/apps/verify.c 1.1.1.6.2.1 src/crypto/openssl/apps/x509.c 1.1.1.11.2.1 src/crypto/openssl/apps/spkac.c 1.1.1.5.2.1 src/crypto/openssl/ssl/s2_srvr.c 1.13.2.1 src/crypto/openssl/ssl/s3_clnt.c 1.1.1.14.2.1 src/crypto/openssl/ssl/s3_srvr.c 1.1.1.17.2.1 src/crypto/openssl/ssl/ssltest.c 1.1.1.10.2.1 src/crypto/openssl/ssl/s2_clnt.c 1.15.2.1 RELENG_7_1 src/UPDATING 1.507.2.13.2.4 src/sys/conf/newvers.sh 1.72.2.9.2.5 src/crypto/openssl/apps/speed.c 1.15.6.1 src/crypto/openssl/apps/verify.c 1.1.1.6.6.1 src/crypto/openssl/apps/x509.c 1.1.1.11.6.1 src/crypto/openssl/apps/spkac.c 1.1.1.5.6.1 src/crypto/openssl/ssl/s2_srvr.c 1.13.6.1 src/crypto/openssl/ssl/s3_clnt.c 1.1.1.14.6.1 src/crypto/openssl/ssl/s3_srvr.c 1.1.1.17.6.1 src/crypto/openssl/ssl/ssltest.c 1.1.1.10.6.1 src/crypto/openssl/ssl/s2_clnt.c 1.15.6.1 RELENG_7_0 src/UPDATING 1.507.2.3.2.12 src/sys/conf/newvers.sh 1.72.2.5.2.12 src/crypto/openssl/apps/speed.c 1.15.4.1 src/crypto/openssl/apps/verify.c 1.1.1.6.4.1 src/crypto/openssl/apps/x509.c 1.1.1.11.4.1 src/crypto/openssl/apps/spkac.c 1.1.1.5.4.1 src/crypto/openssl/ssl/s2_srvr.c 1.13.4.1 src/crypto/openssl/ssl/s3_clnt.c 1.1.1.14.4.1 src/crypto/openssl/ssl/s3_srvr.c 1.1.1.17.4.1 src/crypto/openssl/ssl/ssltest.c 1.1.1.10.4.1 src/crypto/openssl/ssl/s2_clnt.c 1.15.4.1 - ------------------------------------------------------------------------- Subversion: Branch/path Revision - ------------------------------------------------------------------------- stable/6/ r186873 releng/6.4/ r186872 releng/6.3/ r186872 stable/7/ r186872 releng/7.1/ r186872 releng/7.0/ r186872 - ------------------------------------------------------------------------- VII. References http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5077 http://www.openssl.org/news/secadv_20090107.txt The latest revision of this advisory is available at http://security.FreeBSD.org/advisories/FreeBSD-SA-09:02.openssl.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iD8DBQFJZR5ZFdaIBMps37IRAofJAJ4lm2jGfsMo28c0W4zRkhZrKmttGwCgmdd9 IvNUwk47W24SwhQAGH5+Ggw= =UHSl -----END PGP SIGNATURE-----