cups update for SUSE Linux
Posted on: 09/15/2004 10:04 AM

Updated cups packages are available for SUSE Linux ______________________________________________________________________________ SUSE Security Announcement Package: cups Announcement-ID: SUSE-SA:2004:031 Date: Wednesday, Sep 15th, 15:30:00 MEST 2004 Affected products: 8.1, 8.2, 9.0, 9.1 SUSE Linux Enterprise Server 8, 9 SUSE Linux Desktop 1.0 Vulnerability Type: remote code execution Severity (1-10): 6 SUSE default package: Yes. Cross References: CAN-2004-0801 CAN-2004-0558 Content of this advisory: 1) security vulnerability resolved: - remote command execution and remote DoS in CUPS problem description 2) solution/workaround 3) special instructions and notes 4) package location and checksums 5) pending vulnerabilities, solutions, workarounds: - squid - OpenOffice - mozilla - mpg123 - ImageMagick 6) standard appendix (further information)

______________________________________________________________________________ 1) problem description, brief discussion The Common Unix Printing System (CUPS) enables local and remote users to obtain printing functionallity via the Internet Printing Protocol (IPP). Alvaro Martinez Echevarria has found a remote Denial of Service condition within CUPS which allows remote users to make the cups server unresponsive. Additionally the SUSE Security Team has discovered a flaw in the foomatic-rip print filter which is commonly installed along with cups. It allows remote attackers, which are listed in the printing ACLs, to execute arbitrary commands as the printing user 'lp'. 2) solution/workaround If you use CUPS, we recommend an update in any case. Additionally the IPP port (TCP port 631) should be firewalled and the printing ACLs should be set up in a way to reflect the local security policy. 3) special instructions and notes After successfully updating the cups package, you need to run the following command as root: rccups restart 4) package location and checksums Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. x86 Platform: SUSE Linux 9.1: 976655f117091c2bbc78399ffedf6c9c f4af26bd260fc756e2070c340105295d 90cf964bf8b3ea5567754b15c0ab6988 b67b7187ecb708d7ec2980f7cdcdaa81 patch rpm(s): ce0f75db69c838557ecda3e3300bb763 213cbdc01c0f39895f75eb6816641b82 9c47790dcd6fa339ea7a8d21ad841e54 8ccae3fb4988acf0c829ffe491472716 source rpm(s): 96a63ac94b63f0d54d16bd2d3ea73a24 18816a89350fe3fa234506d40e4812b1 SUSE Linux 9.0: f72e1b1c033695ef9f3fe9a64ace220b 46f540ce3bcf72a870eeb2ef78d1e7ec 9c9d4eb93c3dbf2ad740f6041224ff90 4f5c750a1f756161407e4186b378ac51 patch rpm(s): 91b88efa969bb367ead02dfa686f5711 9952d1df78213228f1a0fc129c60331a e83d2d6a85445fdaf186e4eba91a68da 3d91bc3f72cfb8efa4c1a38bf6a46d60 source rpm(s): 236dd9aab66ee87ef73cfe9c7a4dd3a4 56b6200d339a0bd727b102b65d327493 SUSE Linux 8.2: 5092cfbf2d9f71b53cfa571d23ac8e26 1b52320ac8e50797b9e140ba0339008c b0cc87346a3b2270081123bbb5fd932a patch rpm(s): d67014a864afaa86952ed752d89a251a be6ae574c2f26a7f07d1b5e16f4ede02 c176435d584a763ae5b57dcde996f82c source rpm(s): 870f0825115fdf9526beb6e1ec867381 SUSE Linux 8.1: b8a1daf19c2fa58fecc3f9dafb8c4c8d 9f7a2dbc92804cb54749e72426d79a62 7a82aedac6586fa27109e3576f5c4c27 patch rpm(s): 341ebcf57e793a836b5475353cb21e7c 3b75cf2265150044560555785e8e4c82 926eca878ee8c36c4efa509d7b7243d4 source rpm(s): ffc7b24d6638f04933621b9b49bb9e9e x86-64 Platform: SUSE Linux 9.1: fc7b3c21d0bdd1b5617263045a0f0058 4490d72429d54417049a4daabc763e56 23e430a166baef8840b067f71b7ae96d cfc0d3052c29da4e9b9bccac8cb0211e patch rpm(s): 4f347e2efa5151cee929889b18ddfed4 5157c96ec037e965c39ee0139c6287cf ef1f955450463ee0a751ae1a4f5ceacc 4f34ffee4f359ca09eaf481c2904796e source rpm(s): 00ecd612999696c7f3a4e531c1a2198e 33e32a64142f72a224691d64c50f9f66 SUSE Linux 9.0: 1b68c217134d058a5036f9a0058ddd0d 1d48cc152e891fb3baeb2d2409830878 a313c4956f44e230c0df9909ba0a7d25 9b4d8b411702153be4a73222e6a12553 patch rpm(s): f7bda7125579c9bda8cfd9f4e0f6f4a0 608d96f3f6566a65e70a57fcc367f777 a7d38ee463699f6152f8e42ee1da745d c83d5f8d7d41083bdad779505b777d11 source rpm(s): c05016dadf2756e7e66c32c2c2b25858 aa0436134b6b46418455e1c5235c36c0 ______________________________________________________________________________ 5) Pending vulnerabilities in SUSE Distributions and Workarounds: - squid The NTLM authentication in squid suffers from a DoS vulnerability. New packages are currently being tested and will soon be available on our ftp servers. - OpenOffice OpenOffice sets the permissions of tmp-files according to the umask, which might be unsuitable. This will be fixed in upcoming distributions. If you work in an untrusted environment, you may set the $TEMP, $TMP and $TMPDIR environment variables to a location within your $HOME as a workaround. - mozilla We are in the process of releasing updates for mozilla (and related browsers), fixing various issues: CAN-2004-0597, CAN-2004-0718, CAN-2004-0722, CAN-2004-0757, CAN-2004-0758, CAN-2004-0759, CAN-2004-0760, CAN-2004-0761, CAN-2004-0762, CAN-2004-0763, CAN-2004-0764 and CAN-2004-0765. We will give you concrete details in a separate mozilla advisory when the updates are available. - mpg123 A buffer overflow in the decoding of data streams has been fixed. New packages are available on our ftp servers. CAN-2004-0805 has been assigned to this issue. - ImageMagick A buffer overflow in the code handling BMP images has been fixed. New packages are available on our ftp servers. CAN-2004-0827 has been assigned to this issue. ______________________________________________________________________________ 6) 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, 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 "" 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 . - SUSE runs two security mailing lists to which any interested party may subscribe: - general/linux/SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an email to <>. - 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. 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