-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Summary Report Announcement-ID: SUSE-SR:2005:001 Date: Wednesday, Jan 12th 2004 18:00 MEST Cross References: CAN-2004-1152 CAN-2003-0856 CAN-2004-1318 CAN-2004-1284 CAN-2004-1062 CAN-2004-0110 CAN-2004-0989 CAN-2004-1125 Content of this advisory: 1) solved security vulnerabilities: - problems with kernel update end of December - acroread document parsing - iproute2 denial of service - namazu cross site scripting - mpg123 play list option buffer overflow - subversion-viewcvs cross site scripting - postgresql several vulnerabilities - libxml2 old nano ftp / HTTP vulnerabilities - xpdf new integer overflows 2) pending vulnerabilities, solutions, workarounds: - Sun and Blackdown Java - new kernel problems - squirrelmail cross site scripting - acroread buffer overflow - phpMyAdmin remote command execution - wget file overwrite problems - multiple php vulnerabilities - multiple problems reported by djb 3) standard appendix (further information) ______________________________________________________________________________ 1) solved security vulnerabilities To avoid spamming lists with advisories for every small incident, we will release weekly summary advisories for issues where we have released updates without a full advisory. Since these are minor issues, md5sums and ftp URLs are not included. Fixed packages for the following incidents are already available on our FTP server and via the YaST Online Update. - Problems with kernel update at end of December 2004. The kernel RPMs for SUSE LINUX 9.2 kernel of the update had broken post installation scripts which might have lead to a non-booting system. This error has been fixed on our update site and it is safe to apply all SUSE Linux 9.2 updates. If you still have a non booting system the easiest way to make it boot correctly again is to: - Boot the Installer from the DVD/CD. - Select "Boot installed System", select your systems partition. - After the system has started, log in as root user. - Run /sbin/mkinitrd This will fix the /boot/initrd symlink to point to the correct initrd. - Acroread document parsing The Acrobat Reader shipping with SUSE Linux allows scanning E-Mail style plain text files for PDF documents. This code had a flaw which could lead to a remote attacker executing code as the viewing user by handcrafting a special E-Mail. This is tracked by the Mitre CVE ID CAN-2004-1152. All SUSE Linux based products including the acroread RPM are affected. - iproute2 local denial of service A missing access check in the netfilter communication handling of the "ip" program in the iproute2 RPM could lead to a local attacker causing a local denial of service by inserting erroneous information into the netfilter data stream. This is tracked by the Mitre CVE ID CAN-2003-0856 All SUSE Linux based products are affected. - namazu cross site scripting A cross site scripting problem was found in namazu, a full text web search engine. This issue is tracked by the Mitre CVE ID CAN-2004-1318. All SUSE Linux based products are affected. - mpg123 play list option buffer overflow A buffer overflow in the mpg123 play list handling could have a remote user providing a mpg123 play list to execute code as the listening user. This is tracked by the Mitre CVE ID CAN-2004-1284. All SUSE Linux based products are affected. - subversion-viewcvs cross site scripting A cross site scripting problem in the viewcvs part of our subversion RPMs was found and fixed. This is tracked by the Mitre CVE ID CAN-2004-1062. SUSE Linux version from 9.0 up to 9.2 are affected. - postgresql several vulnerabilities Several minor security problems were found and fixed in the PostgreSQL database server. All SUSE Linux based products are affected. - libxml2 / libxml old nano-ftp / HTTP vulnerabilities Old vulnerabilities in the URL handling routines of libxml and libxml2 were reviewed and found not completely fixed in the SUSE RPMs, potentially allowing a remote attacker to execute code as the local user. These are tracked by the Mitre CVE ID CAN-2004-0989 and CAN-2004-0110. All SUSE Linux based products are affected. - xpdf new integer overflows New integer overflows have been found in the xpdf documentviewer and xpdf clones which could lead to a remote attacker gaining local access by providing a special handcrafted PDF file. This issue is tracked by the Mitre CVE ID CAN-2004-1125. Updated RPMs for xpdf and kdegraphics3-pdf were released, pdftohtml, gpdf, cups and more will follow. All SUSE Linux based products are affected. ______________________________________________________________________________ 2) Pending vulnerabilities in SUSE Distributions and Workarounds: - Sun Java Plugin A privilege escalation problem was found in the Sun Java Plugin which could have a remote attacker reading and writing files of a local user browsing websites. This bug affects all SUSE versions on the Intel x86 and AMD64 / Intel Extended Memory Architecture (EM64T) platforms. We are in the process of releasing updated Java packages. - kernel Several more problems have been found in the Linux 2.4 and 2.6 kernels: - Due to missing locking in the sys_uselib system call a local attacker can gain root access. This was found by Paul Starzetz and is tracked by the Mitre CVE ID CAN-2004-1235. - Paul Starzetz also found a race condition in SMP page table handling which could lead to a local attacker gaining root access on i386 SMP machines. This is tracked by the Mitre CVE ID CAN-2005-001. - Several more problems have been reported by grsecurity and are evaluated currently. All SUSE Linux based products are affected and we are in the process of preparing updated packages. - konqueror The Konqueror web browser allows websites to load web pages into a window or tab currently used by another website. This was reported by Secunia Research. Mitre has has assigned the CVE ID CAN-2004-1158 to this issue. All SUSE Linux based products are affected, we are preparing updates for this problem. - php Multiple vulnerabilities were found in the php unserialize functionality and other functions by Stefan Esser and others. We are in the process of preparing updated packages. All SUSE Linux based products are affected. - multiple problems reported by djb Daniel Bernstein held a course on vulnerabilities and had his students audit existing UNIX software for potential problems and vulnerabilities. The students discovered 44 flaws during this course. Not all of those are as serious to be released as a security update, the SUSE Security Team has identified the packages that need an update and is releasing fixes for them. All SUSE Linux based products are affected. ______________________________________________________________________________ 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@suse.de), the checksums show proof of the authenticity of the package. We recommend against subscribing to security lists that cause the e-mail 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 file name of the rpm package that you have downloaded. Of course, package authenticity verification can only target an uninstalled 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-subscribe@suse.com>. 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 <suse-security-announce-subscribe@suse.com>. For general information or the frequently asked questions (FAQ) send mail to: <suse-security-info@suse.com> or <suse-security-faq@suse.com> respectively. ===================================================================== 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, 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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