-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: openssl Announcement-ID: SuSE-SA:2003:011 Date: Wednesday, Feb. 26th 2003 15:20 MET Affected products: 7.1, 7.2, 7.3, 8.0, 8.1 SuSE Linux Database Server, SuSE eMail Server III, 3.1 SuSE Linux Enterprise Server 7 SuSE Linux Enterprise Server 8 SuSE Linux Firewall on CD/Admin host SuSE Linux Connectivity Server SuSE Linux Office Server Vulnerability Type: remote attack on encryption Severity (1-10): 5 SuSE default package: yes Cross References: CAN-2003-0078 Content of this advisory: 1) security vulnerability resolved: openssl problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - vnc - w3m 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information OpenSSL is an implementation of the Secure Sockets Layer and Transport Layer Security protocols and provides strong cryptography for many applications in a Linux system. It is a default package in all SuSE products. A security weakness has been found, known as "Vaudenay timing attack on CBC", named after one of the discoverers (Brice Canvel (EPFL), Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and Martin Vuagnoux (EPFL, Ilion)). The weakness may allow an attacker to obtain a plaintext data block by observing timing differences in response to two different error cases (cipher padding errors vs. MAC verification errors). In order to exploit this vulnerability, the attacker has to meet certain requirements: The network connection between client and server must be of high quality to be able to observe timing differences, the attacker must be able to perform a man-in-the-middle attack, the transactions must repeatedly contain the same (encrypted) plain text block (such as a pop password or alike), and decoding failures in the SSL layer must not be propagated to the application that is using the SSL connection. These exploitation conditions considerably reduce the security risk imposed by the vulnerability. However, we recommend to completely remedy this weakness by installing the update packages for your system according to the following guidelines. There does not exist any temporary workaround for this problem other than applying the update packages. Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. SPECIAL INSTALLATION INSTRUCTIONS: ==================================== Please update your openssl package using the command rpm -Fhv The operation of this command must not be interrupted! An interrupted update of the openssl package may cause large protions of your system to fail. After performing the update, it is adviseable to run the command "ldconfig" to update the shared library loading cache. After the update, running processes in your system will continue to use the shared libraries from the old package before the update. Generally, it is necessary to restart all of these processes to completely fix the vulnerability in your system. The command lsof -n 2>/dev/null | grep RPMDELETE can be used to find the binaries and processes that still use the old shared libraries. In all cases, the next reboot of the system will cause the old shared libraries to be completely removed from the system. Alternatively, a transition to runlevel 1 (single user mode) and back to the default runlevel will have the same effect. Intel i386 Platform: SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssl-0.9.6g-55.i586.rpm 7fbf4d975180a20ff8dedc8adbdecc59 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssl-0.9.6g-55.i586.patch.rpm 6ed4321ec536aa718189702470c33091 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/openssl-0.9.6g-55.src.rpm 90fc753346dd2aff00eee4c530cea84a SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/openssl-0.9.6c-83.i386.rpm d6246b820780993cc0e2b48597743a8f patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/openssl-0.9.6c-83.i386.patch.rpm 2d933e913a9062de6a1fa35de969d211 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/openssl-0.9.6c-83.src.rpm b4b887a7311e9734a14d11e1a380f76e SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/sec1/openssl-0.9.6b-154.i386.rpm d3c0f892441c09c8c5a689e2af04ba55 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/openssl-0.9.6b-154.src.rpm 31ec962fe3549a713b9e6937190a88fb SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec1/openssl-0.9.6a-78.i386.rpm d14f67c34c589f168b750b18c9162508 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/openssl-0.9.6a-78.src.rpm 2ba5a416d6ca3cb75c9aabb5a25bb532 SuSE-7.1: ftp://ftp.suse.com/pub/suse/i386/update/7.1/sec1/openssl-0.9.6a-78.i386.rpm c6b711573555982fadd31cfa179dd9dc source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/openssl-0.9.6a-78.src.rpm d00df30aa6ec6a3872c58da709181879 Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/sec1/openssl-0.9.6b-87.sparc.rpm 6a8f19a49a698b93e740121321f59e5d source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/openssl-0.9.6b-87.src.rpm 50712c3fd35042278063622ad5cc77c7 AXP Alpha Platform: The packages for the 7.1-axp distribution will be published soon. PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec1/openssl-0.9.6b-147.ppc.rpm 051ef85d8e711819b2de38f55dc0023a source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/openssl-0.9.6b-147.src.rpm 58631776b8fa88932eb57069a7f2878e SuSE-7.1: ftp://ftp.suse.com/pub/suse/ppc/update/7.1/sec1/openssl-0.9.6a-28.ppc.rpm da5e7caa177316f3016dd98497e580de source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/openssl-0.9.6a-28.src.rpm b317144556c8f1890d15f304d95c5764 ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - vnc VNC (Virtual Network Computing) uses a weak cookie generation process which can be exploited by an attacker to bypass authentication. New packages are currently being tested and will be available on our FTP servers soon. - w3m The textbased web-browser w3m does not properly escape HTML tags. A malicious HTML page or img alt attribute may lead to information leakage. New packages will be available soon. ______________________________________________________________________________ 3) 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 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 to verify the signature of the package, where 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-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 . For general information or the frequently asked questions (faq) send mail to: or respectively. ===================================================================== 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, 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. Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key - -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org mQGiBDnu9IERBACT8Y35+2vv4MGVKiLEMOl9GdST6MCkYS3yEKeueNWc+z/0Kvff 4JctBsgs47tjmiI9sl0eHjm3gTR8rItXMN6sJEUHWzDP+Y0PFPboMvKx0FXl/A0d M+HFrruCgBlWt6FA+okRySQiliuI5phwqkXefl9AhkwR8xocQSVCFxcwvwCglVcO QliHu8jwRQHxlRE0tkwQQI0D+wfQwKdvhDplxHJ5nf7U8c/yE/vdvpN6lF0tmFrK XBUX+K7u4ifrZlQvj/81M4INjtXreqDiJtr99Rs6xa0ScZqITuZC4CWxJa9GynBE D3+D2t1V/f8l0smsuYoFOF7Ib49IkTdbtwAThlZp8bEhELBeGaPdNCcmfZ66rKUd G5sRA/9ovnc1krSQF2+sqB9/o7w5/q2qiyzwOSTnkjtBUVKn4zLUOf6aeBAoV6NM CC3Kj9aZHfA+ND0ehPaVGJgjaVNFhPi4x0e7BULdvgOoAqajLfvkURHAeSsxXIoE myW/xC1sBbDkDUIBSx5oej73XCZgnj/inphRqGpsb+1nKFvF+rQoU3VTRSBQYWNr YWdlIFNpZ25pbmcgS2V5IDxidWlsZEBzdXNlLmRlPohcBBMRAgAcBQI57vSBBQkD wmcABAsKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyl8sAJ98BgD40zw0GHJHIf6d NfnwI2PAsgCgjH1+PnYEl7TFjtZsqhezX7vZvYCIRgQQEQIABgUCOnBeUgAKCRCe QOMQAAqrpNzOAKCL512FZvv4VZx94TpbA9lxyoAejACeOO1HIbActAevk5MUBhNe LZa/qM2JARUDBRA6cGBvd7LmAD0l09kBATWnB/9An5vfiUUE1VQnt+T/EYklES3t XXaJJp9pHMa4fzFa8jPVtv5UBHGee3XoUNDVwM2OgSEISZxbzdXGnqIlcT08TzBU D9i579uifklLsnr35SJDZ6ram51/CWOnnaVhUzneOA9gTPSr+/fT3WeVnwJiQCQ3 0kNLWVXWATMnsnT486eAOlT6UNBPYQLpUprF5Yryk23pQUPAgJENDEqeU6iIO9Ot 1ZPtB0lniw+/xCi13D360o1tZDYOp0hHHJN3D3EN8C1yPqZd5CvvznYvB6bWBIpW cRgdn2DUVMmpU661jwqGlRz1F84JG/xe4jGuzgpJt9IXSzyohEJB6XG5+D0BiF0E ExECAB0FAjxqqTQFCQoAgrMFCwcKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyp1f AJ9dR7saz2KPNwD3U+fy/0BDKXrYGACfbJ8fQcJqCBQxeHvt9yMPDVq0B0W5Ag0E Oe70khAIAISR0E3ozF/la+oNaRwxHLrCet30NgnxRROYhPaJB/Tu1FQokn2/Qld/ HZnh3TwhBIw1FqrhWBJ7491iAjLR9uPbdWJrn+A7t8kSkPaF3Z/6kyc5a8fas44h t5h+6HMBzoFCMAq2aBHQRFRNp9Mz1ZvoXXcI1lk1l8OqcUM/ovXbDfPcXsUVeTPT tGzcAi2jVl9hl3iwJKkyv/RLmcusdsi8YunbvWGFAF5GaagYQo7YlF6UaBQnYJTM 523AMgpPQtsKm9o/w9WdgXkgWhgkhZEeqUS3m5xNey1nLu9iMvq9M/iXnGz4sg6Q 2Y+GqZ+yAvNWjRRou3zSE7Bzg28MI4sAAwYH/2D71Xc5HPDgu87WnBFgmp8MpSr8 QnSs0wwPg3xEullGEocolSb2c0ctuSyeVnCttJMzkukL9TqyF4s/6XRstWirSWaw JxRLKH6Zjo/FaKsshYKf8gBkAaddvpl3pO0gmUYbqmpQ3xDEYlhCeieXS5MkockQ 1sj2xYdB1xO0ExzfiCiscUKjUFy+mdzUsUutafuZ+gbHog1CN/ccZCkxcBa5IFCH ORrNjq9pYWlrxsEn6ApsG7JJbM2besW1PkdEoxak74z1senh36m5jQvVjA3U4xq1 wwylxadmmJaJHzeiLfb7G1ZRjZTsB7fyYxqDzMVul6o9BSwO/1XsIAnV1uuITAQY EQIADAUCOe70kgUJA8JnAAAKCRCoTtronIAKyksiAJsFB3/77SkH3JlYOGrEe1Ol 0JdGwACeKTttgeVPFB+iGJdiwQlxasOfuXyITAQYEQIADAUCPGqpWQUJCgCCxwAK CRCoTtronIAKyofBAKCSZM2UFyta/fe9WgITK9I5hbxxtQCfX+0ar2CZmSknn3co SPihn1+OBNyZAQ0DNuEtBAAAAQgAoCRcd7SVZEFcumffyEwfLTcXQjhKzOahzxpo omuF+HIyU4AGq+SU8sTZ/1SsjhdzzrSAfv1lETACA+3SmLr5KV40Us1w0UC64cwt A46xowVq1vMlH2Lib+V/qr3b1hE67nMHjysECVx9Ob4gFuKNoR2eqnAaJvjnAT8J /LoUC20EdCHUqn6v+M9t/WZgC+WNR8cq69uDy3YQhDP/nIan6fm2uf2kSV9A7ZxE GrwsWl/WX5Q/sQqMWaU6r4az98X3z90/cN+eJJ3vwtA+rm+nxEvyev+jaLuOQBDf ebh/XA4FZ35xmi+spdiVeJH4F/ubaGlmj7+wDOF3suYAPSXT2QAFEbQlU3VTRSBT ZWN1cml0eSBUZWFtIDxzZWN1cml0eUBzdXNlLmRlPokBFQMFEDbhLUfkWLKHsco8 RQEBVw4H/1vIdiOLX/7hdzYaG9crQVIk3QwaB5eBbjvLEMvuCZHiY2COUg5QdmPQ 8SlWNZ6k4nu1BLcv2g/pymPUWP9fG4tuSnlUJDrWGm3nhyhAC9iudP2u1YQY37Gb B6NPVaZiYMnEb4QYFcqv5c/r2ghSXUTYk7etd6SW6WCOpEqizhx1cqDKNZnsI/1X 11pFcO2N7rc6byDBJ1T+cK+F1Ehan9XBt/shryJmv04nli5CXQMEbiqYYMOu8iaA 8AWRgXPCWqhyGhcVD3LRhUJXjUOdH4ZiHCXaoF3zVPxpeGKEQY8iBrDeDyB3wHmj qY9WCX6cmogGQRgYG6yJqDalLqrDOdmJARUDBRA24S0Ed7LmAD0l09kBAW04B/4p WH3f1vQn3i6/+SmDjGzUu2GWGq6Fsdwo2hVM2ym6CILeow/K9JfhdwGvY8LRxWRL hn09j2IJ9P7H1Yz3qDf10AX6V7YILHtchKT1dcngCkTLmDgC4rs1iAAl3f089sRG BafGPGKv2DQjHfR1LfRtbf0P7c09Tkej1MP8HtQMW9hPkBYeXcwbCjdrVGFOzqx+ AvvJDdT6a+oyRMTFlvmZ83UV5pgoyimgjhWnM1V4bFBYjPrtWMkdXJSUXbR6Q7Pi RZWCzGRzwbaxqpl3rK/YTCphOLwEMB27B4/fcqtBzgoMOiaZA0M5fFoo54KgRIh0 zinsSx2OrWgvSiLEXXYKiEYEEBECAAYFAjseYcMACgkQnkDjEAAKq6ROVACgjhDM /3KM+iFjs5QXsnd4oFPOnbkAnjYGa1J3em+bmV2aiCdYXdOuGn4ZiQCVAwUQN7c7 whaQN/7O/JIVAQEB+QP/cYblSAmPXxSFiaHWB+MiUNw8B6ozBLK0QcMQ2YcL6+Vl D+nSZP20+Ja2nfiKjnibCv5ss83yXoHkYk2Rsa8foz6Y7tHwuPiccvqnIC/c9Cvz dbIsdxpfsi0qWPfvX/jLMpXqqnPjdIZErgxpwujas1n9016PuXA8K3MJwVjCqSKI RgQQEQIABgUCOhpCpAAKCRDHUqoysN/3gCt7AJ9adNQMbmA1iSYcbhtgvx9ByLPI DgCfZ5Wj+f7cnYpFZI6GkAyyczG09sE= =LRKC - -----END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: 2.6.3in Charset: noconv iQEVAwUBPlzffney5gA9JdPZAQG3RQf6Aj55DN4eyOCKlKywqQITYHfvaFi1gzIX q05/9X8r4jfSQlbKYp61h6yO5DcfA2rr9tDIA30IAt9cnzMS+hybMOgyd53bdcJ3 as8QdCspVhDC+RJ7Nk5UZwu8t30kTAY8g2hvxsteFg/LRFX6id5cTS2frnFofHvq Mg1q2K0BoziYe0Yjx+k9MhuFKSPqR386OTmUknZqm2f7B0naK8yKW7z6p8GVc60z cjHDaWuutK/dEKqw5yQI/0E1CpcgyGAQ/4zlNP2xJ9GvndJpCdFvQv/AhvnRR87W 2MMPIuK1BziDsTifVZ4yz7GG9Ff7NJtKkhpHSrdevTXUVMD6yzwGFA== =u+n+ -----END PGP SIGNATURE----- -- - - | Roman Drahtmüller // "You don't need eyes to see, | SuSE Linux AG - Security Phone: // you need vision!" | Nürnberg, Germany +49-911-740530 // Maxi Jazz, Faithless | - -