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SuSE alert SUSE-SA:2007:004 (krb5)

From:  Marcus Meissner <meissner@suse.de>
To:  suse-security-announce@suse.com
Subject:  [suse-security-announce] SUSE Security Announcement: krb5 security problems (SUSE-SA:2007:004)
Date:  Wed, 10 Jan 2007 11:49:02 +0100

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: krb5 Announcement ID: SUSE-SA:2007:004 Date: Wed, 10 Jan 2007 12:00:00 +0000 Affected Products: openSUSE 10.2 SUSE LINUX 10.1 SUSE LINUX 10.0 SUSE LINUX 9.3 SUSE SLED 10 SUSE SLES 10 Vulnerability Type: remote denial of service Severity (1-10): 6 SUSE Default Package: yes Cross-References: CVE-2006-6143, CVE-2006-6144 Content of This Advisory: 1) Security Vulnerability Resolved: krb5 security problems Problem Description 2) Solution or Work-Around 3) Special Instructions and Notes 4) Package Location and Checksums 5) Pending Vulnerabilities, Solutions, and Work-Arounds: See SUSE Security Summary Report. 6) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Problem Description and Brief Discussion Various bugs in the Kerberos5 libraries and tools were fixed which could be used by remote attackers to crash and potentially execute code in kadmind. - CVE-2006-6144 / MITKRB5-SA-2006-002: the RPC library could call an uninitialized function pointer, which created a security vulnerability for kadmind. - CVE-2006-6143 / MITKRB5-SA-2006-003: the GSS-API mechglue layer could fail to initialize some output pointers, causing callers to attempt to free uninitialized pointers. This caused a security vulnerability in kadmind. 2) Solution or Work-Around There is no known workaround, please install the update packages. 3) Special Instructions and Notes None. 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 <file.rpm> to apply the update, replacing <file.rpm> with the filename of the downloaded RPM package. x86 Platform: openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/krb5-1.5... 4ca25054bbab5904788c59770244f7db ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/krb5-ser... 1255b216e9ccd859dd48d408ff3c47fe SUSE LINUX 10.1: ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/krb5-1.4... bb069e7b8a87d1b37d295845d42f01b7 ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/krb5-ser... 216fbc03ebf686e4fb0e97ea9af37663 SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/krb... b64ae4d898a21a45215f910d79e25846 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/krb... 41cfd49f686df98c58e952ac35f884f4 SUSE LINUX 9.3: ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/krb5... 8217967cf7b1cbe2f110b62d6587f1ed ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/krb5... e53acbadff99aef651c0bffe9b635cc4 Power PC Platform: openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/krb5-1.5.... 926d4584a5b99b3e2c4b6e2d7c82f207 ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/krb5-serv... 147cbf384e74834f8bd3ae85b6558801 SUSE LINUX 10.1: ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/krb5-1.4.... 0f64972c3effc2e8b8d6c60e6cc83ee2 ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/krb5-serv... b05b1f047f45cb3dae619803c35b2064 SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/krb5... 8b848a4cdb5eeca47145665009ee6999 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/krb5... 788cea6376b8d0d4fbb7ae6841b1121e x86-64 Platform: openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/krb5-1... 5048fe45c961d2a101c359beee6dfd90 ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/krb5-3... aab68447731fe22bbf3e7133411658eb ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/krb5-s... 76d07392dbfa6ce64afb748724ffc383 SUSE LINUX 10.1: ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/krb5-1... 4f28bc902dd81ba3154c8ab502dd6be6 ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/krb5-3... e8cb3fd1f9040c3c162e84f76e490578 ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/krb5-s... b9f3d11d3ee957b0f228c5276a84005b SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/k... dedeffa46109d7339ec71122122589db ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/k... 4bce2876d9c1b883207e03dc34513eb2 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/k... 1ef250e5e23a298349f28b2423e3a8f2 SUSE LINUX 9.3: ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/kr... 82e4c415098edcaca10ab626cb304bed ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/kr... e2cdaaf22c5ecf51274c6d87731cbd7f ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/kr... 861fb648231993f96b6c9bb789c6fba2 Sources: openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/src/krb5-1.5.... 49e80a10bedad6caf6584c91262bacb4 SUSE LINUX 10.1: ftp://ftp.suse.com/pub/suse/update/10.1/rpm/src/krb5-1.4.... 8a116157fed412cb74c84157391a25e1 SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/krb5... de6594481cd93860c81a66befa90179e SUSE LINUX 9.3: ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/krb5-... 8e24ef8f705e1c00fe5f2158198e0ed1 Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web: SUSE SLES 10 http://support.novell.com/techcenter/psdb/719d380dfd28626... SUSE SLED 10 http://support.novell.com/techcenter/psdb/719d380dfd28626... ______________________________________________________________________________ 5) Pending Vulnerabilities, Solutions, and Work-Arounds: See SUSE Security 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 <file> replacing <file> with the name of the file where you saved the announcement. The output for a valid signature looks like: gpg: Signature made <DATE> using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team <security@suse.de>" where <DATE> 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 <file.rpm> to verify the signature of the package, replacing <file.rpm> 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 <filename.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 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: opensuse-security@opensuse.org - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to <opensuse-security+subscribe@opensuse.org>. 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 <suse-security-announce-subscribe@suse.com>. ===================================================================== SUSE's security contact is <security@suse.com> or <security@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, 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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