From meissner@suse.de Wed Oct 19 09:20:04 2005 From: Marcus Meissner To: full-disclosure@lists.grok.org.uk Date: Wed, 19 Oct 2005 15:16:02 +0200 Subject: [Full-disclosure] SUSE Security Announcement: openSSL protocol downgrade attack (SUSE-SA:2005:061) -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: openssl Announcement ID: SUSE-SA:2005:061 Date: Wed, 19 Oct 2005 12:00:00 +0000 Affected Products: SUSE LINUX 10.0 SuSE Linux 9.0 SUSE LINUX 9.1 SUSE LINUX 9.2 SUSE LINUX 9.3 SuSE Linux Desktop 1.0 SuSE Linux Enterprise Server 8 SUSE Linux Enterprise Server 9 UnitedLinux 1.0 Novell Linux Desktop 9 Open Enterprise Server Vulnerability Type: protocol downgrade attack Severity (1-10): 7 SUSE Default Package: yes Cross-References: CAN-2005-2969 Content of This Advisory: 1) Security Vulnerability Resolved: openssl protocol downgrading attack 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 The openssl cryptographic libraries have been updated to fix a protocol downgrading attack which allows a man-in-the-middle attacker to force the usage of SSLv2. This happens due to the work-around code of SSL_OP_MSIE_SSLV2_RSA_PADDING which is included in SSL_OP_ALL (which is commonly used in applications). (CAN-2005-2969) Additionally this update adds the Geotrusts Equifax Root1 CA certificate to allow correct certification against Novell Inc. websites and services. The same CA is already included in Mozilla, KDE, and curl, which use separate certificate stores. 2) Solution or Work-Around Please install the updated packages. A work-around would be to disable SSL v2 support in the applications. 3) Special Instructions and Notes Restart all services using SSL communication. 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 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/openssl-0.9.7g-2.2.i586.rpm e3327b60cd67e05c69fbad39787dccc9 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/openssl-devel-0.9.7g-2.2.i586.rpm 24865cb7cc369352f0be0f6681c0337e SUSE LINUX 9.3: ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/openssl-0.9.7e-3.2.i586.rpm 83537e24205a2add698e1b3bdabd47da ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/openssl-devel-0.9.7e-3.2.i586.rpm 24b05ddf75b1b1c1630f489c73009782 SUSE LINUX 9.2: ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/openssl-0.9.7d-25.2.i586.rpm eb5845c52c418f6c4dd54922854f282f ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/openssl-devel-0.9.7d-25.2.i586.rpm 3489d04736d818da68ef83d148aadddd SUSE LINUX 9.1: ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/openssl-0.9.7d-15.15.3.i586.rpm 44fa57fcbdf8f3889bacb9cff6b1a09f ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/openssl-devel-0.9.7d-15.15.3.i586.rpm 1faa73fc6dac13b05e40f5714f88b226 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/i586/openssl-32bit-9.1-200510151708.i586.rpm d4b72038c4552fcba9fa11b554af2eac ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/i586/openssl-devel-32bit-9.1-200510151708.i586.rpm 6b4b1eeaa0592fd7a92816ceb4658494 SuSE Linux 9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/openssl-0.9.7b-135.i586.rpm cf17f027255eabe00df743ead5052f1a ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/openssl-devel-0.9.7b-135.i586.rpm 9ffd642f59150064dbb04644990d22b8 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/i586/openssl-32bit-9.0-5.i586.rpm b411a2e07c627174edf3e59c36e2afea ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/i586/openssl-devel-32bit-9.0-5.i586.rpm 9dc0fcfe4741f1d8d4a173bc850d9e7d Power PC Platform: SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/openssl-0.9.7g-2.2.ppc.rpm b0e8a0c17fbd8f49cfdbac754fd3c0ab ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/openssl-devel-0.9.7g-2.2.ppc.rpm 58cf5958a728dcaa51948c65b643e384 x86-64 Platform: SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/openssl-0.9.7g-2.2.x86_64.rpm c3936949ff35609e24aa3ff916660c7b ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/openssl-32bit-0.9.7g-2.2.x86_64.rpm fd553f55be7b1853e6094493da3e07e6 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/openssl-devel-0.9.7g-2.2.x86_64.rpm 665de86c4ae6b403f7e89b911b671ce6 ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/openssl-devel-32bit-0.9.7g-2.2.x86_64.rpm b141bae445d418406c0287627746aa34 SUSE LINUX 9.3: ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/openssl-0.9.7e-3.2.x86_64.rpm 3133ea05502fd5ebdecd906dbb751ff8 ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/openssl-32bit-9.3-7.1.x86_64.rpm 025292747aed0b549b21dd6286afa4ee ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/openssl-devel-0.9.7e-3.2.x86_64.rpm 9b50c10172a3cffd6e5095dc6487382f ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/openssl-devel-32bit-9.3-7.1.x86_64.rpm ab9d47dc1d0ef66219ed6363c2d1234f SUSE LINUX 9.2: ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/openssl-0.9.7d-25.2.x86_64.rpm 265519514837b9cc0a5e185b963e58c8 ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/openssl-32bit-9.2-200510160152.x86_64.rpm 28376541a6f7cb041cafb39eab6e669f ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/openssl-devel-0.9.7d-25.2.x86_64.rpm df48531e0db3877bda1f8e631c96440e ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/openssl-devel-32bit-9.2-200510160152.x86_64.rpm c1012b7d66aab61fc5ba932ce3b3ddd5 SUSE LINUX 9.1: ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/openssl-0.9.7d-15.15.3.x86_64.rpm 97cbb139fac0a59b7e1ab5590cdd7911 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/openssl-devel-0.9.7d-15.15.3.x86_64.rpm 4807e04cddbf761eb5da4fc1979822e5 SuSE Linux 9.0: ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/openssl-0.9.7b-135.x86_64.rpm 96767379ee26179d81231112da76ebc4 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/openssl-devel-0.9.7b-135.x86_64.rpm eaacfac00c7fe69bee685e427b908ede Sources: SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/openssl-0.9.7g-2.2.src.rpm 96f81c596120ea526f80925c928ba18d SUSE LINUX 9.3: ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/openssl-0.9.7e-3.2.src.rpm 0e80ac579c04e13dc737c1efe57e1905 SUSE LINUX 9.2: ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/openssl-0.9.7d-25.2.src.rpm a378099cce54b5660349de48228f97b9 SUSE LINUX 9.1: ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/openssl-0.9.7d-15.15.3.src.rpm bd45e590bccf5bb6dfc24756bc5a857f ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/openssl-0.9.7d-15.15.3.src.rpm 94d6dfafd61ccd20355f92907ffb8a72 SuSE Linux 9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/openssl-0.9.7b-135.src.rpm af0b9e588250c2970687b518613e897a ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/openssl-0.9.7b-135.src.rpm 29afc1febd81c7765e56aefe0b083ebb 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/5ac94511860f4bb76c8ce92f5791934b.html http://portal.suse.com/psdb/5ac94511860f4bb76c8ce92f5791934b.html http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/66fe930899c74b0ad097886cced1db5c.html http://portal.suse.com/psdb/66fe930899c74b0ad097886cced1db5c.html ______________________________________________________________________________ 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 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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