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May 2003

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SuSE Security Announcement: glibc (SuSE-SA:2003:027)
by Thomas Biege 27 May '03

27 May '03

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: glibc Announcement-ID: SuSE-SA:2003:027 Date: Monday, May 26th 2003 16:12 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 Firewall on CD/Admin host SuSE Linux Connectivity Server SuSE Linux Office Server Vulnerability Type: remote system compromise Severity (1-10): 6 SuSE default package: yes Cross References: CAN-2003-0028 Content of this advisory: 1) security vulnerability resolved: integer overflow in XDR code problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - ethereal - XFree4 - vnc - bitchx - lv 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information Another integer overflow was found in glibc' XDR code. This bug is equal to the one described in advisory SuSE-SA:2002:031. The overflow occurs in the function xdrmem_getbytes() and can be used by external attackers to execute arbitrary code. There is no temporary workaround for this security problem other than disabling all RPC based server and client programs. The permanent solution is to update the glibc packages with the update packages listed below. Notes, Special installation instructions: * PRECAUTIONS The shared libraries package of the glibc is the most sensitive part of a running Linux system, and modifications to it should be handled with special care. During the update of the shlibs/glibc package, runtime-linking the shared libraries is likely to fail for processes that execute a new binary with the execve(2) system call. Therefore, we recommend to bring a system to single user mode ("init S") to perform the package update. If this is not applicable for operational reasons, a system receiving the update should be kept as quiet as possible (no shell scripts of any kind, no cron jobs, no incoming email). * After performing the update, you should run the following command on your system: /sbin/ldconfig ldconfig will rebuild the runtime linker cache. If you use YOU (Yast2 Online Update), the ldconfig command will be executed automatically at the end of the update. The shared libraries that were installed on the system before the update have been removed from the filesystem, but they are still in use by the running applications. Therefore, the disk-space as well as the memory will not be freed until the last process that uses these files exits. We recommend to reboot the system to workaround this problem. Listed below you find the URLs for the update packages for the SuSE Linux products. We only list the packages that are relevant for the security update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. Intel i386 Platform: SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i686/glibc-2.2.5-177.i686.r… 1cf549fa52427710c7dc3316fc5df4a6 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i686/glibc-2.2.5-177.i686.p… f87601fd71edf54928104581684dae8f SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/a1/glibc-2.2.5-177.i386.rpm da51402d30c37dd5dc6d5444c37f4dc3 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/a1/glibc-2.2.5-177.i386.patch.r… 0b5ea57d89c31d923cfb56cb1f951bac source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/glibc-2.2.5-177.src.rpm 6fecec2ed42fb792b6e9cb2a5602fe23 SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/a1/glibc-2.2.4-78.i386.rpm 11cc1ceb173b18fc82d8500b1528663e source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/glibc-2.2.4-78.src.rpm 38527e5f75d94c016659c71028c37c52 SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/a1/glibc-2.2.2-68.i386.rpm 82f4c3ee8ba0cf3feef5e0ba7321a230 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/glibc-2.2.2-68.src.rpm 34114134cb51d706989c45306f4fdde3 SuSE-7.1: ftp://ftp.suse.com/pub/suse/i386/update/7.1/a1/glibc-2.2-26.i386.rpm ffe7c422727ee98b8191facbbf40b9d7 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/glibc-2.2-26.src.rpm 1c5b778ff60a82f03e412239b907671b Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/a1/glibc-2.2.4-46.sparc.rpm dc577491e13344411462603b6fe83d3f source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/glibc-2.2.4-46.src.rpm 0a0a5dd6ee76e6b0ef866b500d6537b2 AXP Alpha Platform: SuSE-7.1: ftp://ftp.suse.com/pub/suse/axp/update/7.1/a1/glibc-2.2-34.alpha.rpm d250c254668e02b9f23341903f2f3a5e source rpm(s): ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/glibc-2.2-34.src.rpm d89b4a1ff27227a085e516b48ccdb1cf PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/a1/glibc-2.2.4-69.ppc.rpm 5bf4edf432c996b3e38ef085122e1e8 ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - ethereal Several one-byte buffer overflows and integer overflows are fixed. These bugs lead to remote denial-of-service or even remote code execution. New packages are available on our FTP servers. - XFree4 A buffer overflow in the Xlib code can be triggered while handling the environment variable XLOCALEDIR. The X version affected is 4.2.0 (SuSE Linux 8.0 and 8.1). New packages are available on our FTP servers. - vnc VNC (Virtual Network Computing) uses a weak cookie generation process which can be exploited by an attacker to bypass authentication. New packages are available on our FTP servers. - bitchx Several buffer overflows got fixed that can be exploited remotely by a malicious IRC servers. New packages are available on our FTP servers. - lv lv reads config files from the current directory without verifying the ownership. If lv is called in world-writeable directories like /tmp it can be tricked into executing commands by putting a malicious config- file there. New packages are available on our FTP servers. ______________________________________________________________________________ 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 <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(a)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(a)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(a)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(a)suse.com>. suse-security-announce(a)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(a)suse.com>. For general information or the frequently asked questions (faq) send mail to: <suse-security-info(a)suse.com> or <suse-security-faq(a)suse.com> respectively. ===================================================================== SuSE's security contact is <security(a)suse.com> or <security(a)suse.de>. The <security(a)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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-----END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iQEVAwUBPtNwVney5gA9JdPZAQGgRwf+Jb5OmG6zuqPPAE9nf31SVOUXKY1aO+D0 eHqEM/7VbSaCQ2TAx28mYfyek1NaGudwyqDBGxyVYrrlwz0z9jkGRP/GUY4h2mBk vff5xnlzSbvetFCnoHtR/RqXXRPvnDe3GDgeJXoPpZtRYnDb/Rw/4UOKnIyev7QP iw8yupuYGEQt6yDHwMatSJAHOT3QOmYbsqy6N8GcQ2KwttaVWmHw8bm5eoJKrAAM HR0YjLAu371ZO4pfV4r3Vl2HhaQ+r+/tm4VHnySqA5YdDyM1QiX1AEi5RXqD3L0U ERYYwSc/h/jG6aqKcqAurFIdoGUqAvzevJv0quQAYRWNwbik8jzv8g== =BUi3 -----END PGP SIGNATURE----- Bye, Thomas -- Thomas Biege <thomas(a)suse.de> SuSE Linux AG,Deutschherrnstr. 15-19,90429 Nuernberg Function: Security Support & Auditing "lynx -source http://www.suse.de/~thomas/contact/thomas.asc | gpg --import" Key fingerprint = 7254 B15D B3C4 943F 485E 0BBD 8ECC D7CB C200 A213 -- Das erste Opfer einer Schlacht ist immer der Schlachtplan.

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Discontinued SuSE Linux Distributions
by Roman Drahtmueller 12 May '03

12 May '03

-----BEGIN PGP SIGNED MESSAGE----- Dear suse-security-announce subscriber and SuSE Linux user, With the release of the SuSE Linux 8.2 i386 ftp version, we announce that the SuSE Linux 7.1 distribution will be discontinued for all architectures. Our SLES (SuSE Linux Enterprise Server) products and the products based on SLES are not affected by this announcement. Vulnerabilities found after Friday, May 16 2002, will not be fixed for SuSE Linux 7.1 any more. After two years of successful use, SuSE Linux 7.1 will free resources for the newly released products. By consequence, the 7.1 distribution directories on our ftp server ftp.suse.com have been moved to the /pub/suse/discontinued/ directory tree structure; the 7.1 directories in the update trees will follow near the end of May, soon after all pending update packages have been published. SuSE puts much effort into adding security improvements (patches) to the software. We usually do not publish new versions of a software package because new features and changed behaviour of a single package can jeopardize the seamless operation of the product as a whole. Over the lifetime of a SuSE Linux distribution, this causes an increasing workload on the SuSE Security Team and SuSE software engineering in general: The older the product (and the package versions in it) is, the more work is needed to prepare patches that fix security related malfunctions. This forces us to focus on the SuSE Linux distributions of a newer release date to ensure that our customers can continuously take advantage of the quality that they are used to with SuSE products. Please note that our SuSE Linux Enterprise Server products have a longer support lifetime which is completely independent from the SuSE Linux distributions. To learn more about the SuSE Linux Enterprise Server product family, please visit http://www.suse.de/en/business/products/index.html . As usual, SuSE will continue to provide update packages for the remaining distributions SuSE-7.2 SuSE-7.3 SuSE-8.0 SuSE-8.1 and SuSE-8.2 for a two-year period after the release of the respective distribution. If you have any questions regarding this announcement, please do not hesitate to direct your questions to security(a)suse.de (SuSE security contact). Regards, Roman Drahtmüller, SuSE Security. - - | Roman Drahtmüller <draht(a)suse.de> // "You don't need eyes to see, | SuSE Linux AG - Security Phone: // you need vision!" | Nürnberg, Germany +49-911-740530 // Maxi Jazz, Faithless | - - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iQEVAwUBPr+qfXey5gA9JdPZAQEAygf+KEI9PrsUt9jqjV4qGYDI2LfMzEswGaTg VfjuJoy9bg+/6LZMk7FSdO3R19ndhNw/C5vXGIad2ta2xgdOuVit9I2POQ6gn7z+ ufUeNBPHI2u0Iv+aDTVemfyjrtwRdWrbL1ygBMr0PxnnowjRmXruK9Q+IGwaJkjo ZjFvK76GER0LkQKfijNr6XvjliFGAqESEAASrzrP8IQwYURjFoBRqze2+T+kUKgo 2pUa5t+WecxqZG7I9hgOti/9sQAuwfMN7uaONVEt6BdIsJki3zL5erPTQjoiprlD kExFoCEydhlL/xjcrEo0PJsPXKH/evxbrQjfcOqQrfsTmJlirCAj4Q== =e7cv -----END PGP SIGNATURE-----

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