-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: cyrus-sasl,cyrus-sasl2 Announcement-ID: SUSE-SA:2005:013 Date: Thu, 03 Mar 2005 11:00:00 +0000 Affected products: 8.2, 9.0, 9.1, 9.2 SUSE Linux Desktop 1.0 SUSE Linux Enterprise Server 8, 9 Novell Linux Desktop 9 Vulnerability Type: remote code execution Severity (1-10): 8 SUSE default package: yes Cross References: CAN-2005-0373 Content of this advisory: 1) security vulnerability resolved: remote buffer overflow in digestmda5 problem description 2) solution/workaround 3) special instructions and notes 4) package location and checksums 5) pending vulnerabilities, solutions, workarounds: none 6) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion cyrus-sasl is a library providing authentication services. A buffer overflow in the digestmda5 code was identified that could lead to a remote attacker executing code in the context of the service using sasl authentication. This is tracked by the Mitre CVE ID CAN-2005-0373. 2) solution/workaround Please install the upgraded packages. 3) special instructions and notes Please restart services using cyrus-sasl for authentication. 4) package location and checksums Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. x86 Platform: SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/cyrus-sasl-2.1.18-33.8.i586.rpm 3c8e2d18989cc3503e443eb7fb9cb83d ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/i586/cyrus-sasl-32bit-9.1-200502182137.i586.rpm bfcc587c9b808fae4409019099be779e SUSE Linux 9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/cyrus-sasl-2.1.15-109.i586.rpm edc54c6bd2e076a20c28c04c1c81c74d ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/i586/cyrus-sasl-32bit-9.0-4.i586.rpm 2c622b4f23c2391b4ee4761face45d3a SUSE Linux 8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/cyrus-sasl2-2.1.12-66.i586.rpm 9cbb07d4de227affcd4dc151e73ef2d3 x86-64 Platform: SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/cyrus-sasl-2.1.18-33.8.x86_64.rpm c843a67b5643930310efd2126c664e1c source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/cyrus-sasl-2.1.18-33.8.src.rpm 908c30cba8e5407dd0124ad0919b6248 SUSE Linux 9.0: ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/cyrus-sasl-2.1.15-109.x86_64.rpm c9fd563dc21800f7a857b22d70abe55a source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/cyrus-sasl-2.1.15-109.src.rpm 8bd0c8cd338120daf7e76c52c137cc9e ______________________________________________________________________________ 5) Pending vulnerabilities in SUSE Distributions and Workarounds: See SUSE Security Summary Report. ______________________________________________________________________________ 6) standard appendix: authenticity verification, additional information - Package authenticity verification: SUSE update packages are available on many mirror ftp servers all over the world. While this service is being considered valuable and important to the free and open source software community, many users wish to be sure about the origin of the package and its content before installing the package. There are two verification methods that can be used independently from each other to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package. 1) execute the command md5sum <name-of-the-file.rpm> after you downloaded the file from a SUSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key security@suse.de), the checksums show proof of the authenticity of the package. We disrecommend to subscribe to security lists which cause the email message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless. 2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, where <file.rpm> is the filename of the rpm package that you have downloaded. Of course, package authenticity verification can only target an un-installed rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SUSE in rpm packages for SUSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SUSE Linux distributions version 7.1 and thereafter install the key "build@suse.de" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de . - SUSE runs two security mailing lists to which any interested party may subscribe: suse-security@suse.com - general/linux/SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an email to <suse-security-subscribe@suse.com>. suse-security-announce@suse.com - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an email to <suse-security-announce-subscribe@suse.com>. For general information or the frequently asked questions (faq) send mail to: <suse-security-info@suse.com> or <suse-security-faq@suse.com> respectively. ===================================================================== SUSE's security contact is <security@suse.com> or <security@suse.de>. @suse.de>. The <security@suse.de> public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the clear-text signature shows proof of the authenticity of the text. SUSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory. 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