From thomas@suse.de Fri Feb 24 12:09:31 2006 From: Thomas Biege To: bugtraq@securityfocus.com Date: Fri, 24 Feb 2006 14:56:37 +0100 Subject: SuSE Security Announcement: heimdal (SUSE-SA:2006:010) -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: heimdal Announcement ID: SUSE-SA:2006:010 Date: Fri, 24 Feb 2006 12:00:00 +0000 Affected Products: SUSE LINUX 9.2 SUSE LINUX 9.1 SuSE Linux Desktop 1.0 SuSE Linux Enterprise Server 8 SUSE SLES 9 UnitedLinux 1.0 Vulnerability Type: remote denial of service Severity (1-10): 5 SUSE Default Package: no Cross-References: CVE-2006-0582 CVE-2006-0677 Content of This Advisory: 1) Security Vulnerability Resolved: local unauthorized file access, remote denial of service Problem Description 2) Solution or Work-Around 3) Special Instructions and Notes 4) Package Location and Checksums 5) Pending Vulnerabilities, Solutions, and Work-Arounds: none 6) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Problem Description and Brief Discussion Heimdal is a Kerberos 5 implementation from the Royal Institut of Techno- logy in Stockholm. This update fixes two bugs in heimdal. The first one occurs in the rsh daemon and allows an authenticated malicious user to gain ownership of files that belong to other users (CVE-2006-0582). The second bug affects the telnet server and can be used to crash the server before authentication happens. It is even a denial-of-service attack when the telnetd is started via inetd because inetd stops forking the daemon when it forks too fast (CVE-2006-0677). 2) Solution or Work-Around There is no work-around known. 3) Special Instructions and Notes Please make sure the affected daemons are restarted after the update. 4) Package Location and Checksums The preferred method for installing security updates is to use the YaST Online Update (YOU) tool. YOU detects which updates are required and automatically performs the necessary steps to verify and install them. Alternatively, download the update packages for your distribution manually and verify their integrity by the methods listed in Section 6 of this announcement. Then install the packages using the command rpm -Fhv to apply the update, replacing with the filename of the downloaded RPM package. x86 Platform: SUSE LINUX 9.2: ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-0.6.2-8.6.i586.rpm 3d3d6618cfb387ed34c324d805de0df0 ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-devel-0.6.2-8.6.i586.rpm 7f885d8e091ce98a3bab1816d4165d3e ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-lib-0.6.2-8.6.i586.rpm 021f253a7df8d5ab3caa20b25ea67529 ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-tools-0.6.2-8.4.i586.rpm 748a213e99d7a2be08eeb4496aecb478 ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-tools-devel-0.6.2-8.4.i586.rpm 02b9f64f5be3822307102fb9d5842119 SUSE LINUX 9.1: ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/heimdal-0.6.1rc3-55.21.i586.rpm 235b22414f6129d744f2f62ffccc7962 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/heimdal-devel-0.6.1rc3-55.21.i586.rpm 5c17e233db8c0b53798cab0d78f1ede1 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/heimdal-lib-0.6.1rc3-55.21.i586.rpm 17d0afc2004af42ebbeb8d77af724fe5 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/i586/heimdal-lib-32bit-9.1-200602210606.i586.rpm 38c61584528fa24ff04ece6705d21fb3 x86-64 Platform: SUSE LINUX 9.2: ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-0.6.2-8.6.x86_64.rpm 1f899680ff31945963b55e49df6bcfda ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-devel-0.6.2-8.6.x86_64.rpm 1d65e94810c65ccff51b75066569c428 ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-devel-32bit-9.2-200602211039.x86_64.rpm 068244c514f752985be7c76c5a25418e ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-lib-0.6.2-8.6.x86_64.rpm 20b9598b6f5cfaf70de0d3a120f89182 ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-lib-32bit-9.2-200602211039.x86_64.rpm 93dc79bdf0fc7b7b4cd82a0c3769329e ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-tools-0.6.2-8.4.x86_64.rpm 31d1a3e3da2a794850b3e03710d5263c ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-tools-devel-0.6.2-8.4.x86_64.rpm 71b87841750ba89979c51c3148d315a0 SUSE LINUX 9.1: ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/heimdal-0.6.1rc3-55.21.x86_64.rpm 226be123cb085fb50899ac8af82f5bda ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/heimdal-devel-0.6.1rc3-55.21.x86_64.rpm 658aa7a1969078842a0a9368402b83ff ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/heimdal-lib-0.6.1rc3-55.21.x86_64.rpm dafdcf2c26be6576916f5ba6cf3cd9f6 Sources: SUSE LINUX 9.2: ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/heimdal-0.6.2-8.6.src.rpm e7333885b6976b490164d28dbc00e905 SUSE LINUX 9.1: ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/heimdal-0.6.1rc3-55.21.src.rpm ab5d0a61dbfb9df34dfa200bda28d04a ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/heimdal-0.6.1rc3-55.21.src.rpm 0d7fc839fc86c6919931190dbdfbd88e Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web: http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/e3602ff9b11cc8f4a33fff923a591a18.html http://portal.suse.com/psdb/e3602ff9b11cc8f4a33fff923a591a18.html http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/f1e0fa19e4bd47f5f481fa6abb284ed4.html http://portal.suse.com/psdb/f1e0fa19e4bd47f5f481fa6abb284ed4.html ______________________________________________________________________________ 5) Pending Vulnerabilities, Solutions, and Work-Arounds: Please read the weekly summary report. ______________________________________________________________________________ 6) Authenticity Verification and Additional Information - Announcement authenticity verification: SUSE security announcements are published via mailing lists and on Web sites. The authenticity and integrity of a SUSE security announcement is guaranteed by a cryptographic signature in each announcement. All SUSE security announcements are published with a valid signature. To verify the signature of the announcement, save it as text into a file and run the command gpg --verify replacing with the name of the file where you saved the announcement. The output for a valid signature looks like: gpg: Signature made using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team " where is replaced by the date the document was signed. If the security team's key is not contained in your key ring, you can import it from the first installation CD. To import the key, use the command gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc - Package authenticity verification: SUSE update packages are available on many mirror FTP servers all over the world. While this service is considered valuable and important to the free and open source software community, the authenticity and the integrity of a package needs to be verified to ensure that it has not been tampered with. 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) Using the internal gpg signatures of the rpm package 2) MD5 checksums as provided in this announcement 1) The internal rpm package signatures provide an easy way to verify the authenticity of an RPM package. Use the command rpm -v --checksig to verify the signature of the package, replacing with the filename of the RPM package downloaded. The package is unmodified if it contains a valid signature from build@suse.de with the key ID 9C800ACA. This key is automatically imported into the RPM database (on RPMv4-based distributions) and the gpg key ring of 'root' during installation. You can also find it on the first installation CD and at the end of this announcement. 2) If you need an alternative means of verification, use the md5sum command to verify the authenticity of the packages. Execute the command md5sum 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 SUSE security announcement. Because the announcement containing the checksums is cryptographically signed (by security@suse.de), the checksums show proof of the authenticity of the package if the signature of the announcement is valid. Note that the md5 sums published in the SUSE Security Announcements are valid for the respective packages only. Newer versions of these packages cannot be verified. - SUSE runs two security mailing lists to which any interested party may subscribe: suse-security@suse.com - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to . 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 e-mail to . For general information or the frequently asked questions (FAQ), send mail to or . ===================================================================== SUSE's security contact is or . The 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, the clear text signature should show proof of the authenticity of the text. SUSE Linux Products GmbH provides no warranties of any kind whatsoever with respect to the information contained in this security advisory. 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