-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Summary Report Announcement ID: SUSE-SR:2006:028 Date: Fri, 08 Dec 2006 17:00:00 +0000 Cross-References: CVE-2006-3334, CVE-2006-4513, CVE-2006-4810 CVE-2006-5793, CVE-2006-5864, CVE-2006-6172 CVE-2006-6235, CVE-2006-6332 Content of this advisory: 1) Solved Security Vulnerabilities: - xine-lib realmedia overflow problem - texinfo buffer overflows - wv overflows - libpng 2 denial of service 2) Pending Vulnerabilities, Solutions, and Work-Arounds: - madwifi remote exploit - next kernel update - gpg stack corruption - evince code execution - koffice PPT document denial of service 3) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Solved Security Vulnerabilities To avoid flooding mailing lists with SUSE Security Announcements for minor issues, SUSE Security releases weekly summary reports for the low profile vulnerability fixes. The SUSE Security Summary Reports do not list md5 sums or download URLs like the SUSE Security Announcements that are released for more severe vulnerabilities. Fixed packages for the following incidents are already available on our FTP server and via the YaST Online Update. - xine-lib realmedia overflow problem A bug in the XINE libraries that could have caused a buffer overflow in the real media plugin has been fixed. (CVE-2006-6172) It is not clear to us how exploitable this problem is. All SUSE Linux based products including xine-lib were affected. - texinfo buffer overflows Specially crafted texinfo files could crash the texinfo utilities. (CVE-2006-4810) This problem affected all SUSE Linux based distributions. - wv overflows Two integer overflows were found in the Microsoft Word converter library "wv", which could potentially be used to crash programs using this library or to even execute code. - A LVL Count Integer Overflow Vulnerability was fixed. - A LFO Count Integer Overflow Vulnerability was fixed. Both problems have been assigned the Mitre CVE ID CVE-2006-4513 and affect all SUSE Linux based products containing the "wv" package. - libpng 2 denial of service The sPLT chunk handling in libpng was incorrect and a handcrafted PNG file could be use to cause an out-of-bounds read, effectively crashing the PNG viewer or web browser. (CVE-2006-5793) Additionally a 2 byte stack overflow was fixed which we do not believe to be exploitable. It will cause an abort of the viewer or web browser in SUSE Linux 10.0 and newer due to string overflow checking. (CVE-2006-3334) These problems were fixed for all SUSE Linux based distributions. ______________________________________________________________________________ 2) Pending Vulnerabilities, Solutions, and Work-Arounds - madwifi remote exploit A remote exploitable vulnerability was found in the Atheros madwifi driver. On the version on SUSE Linux Enterprise Desktop 10 it is possible for a attacker physically close (WLAN range) to the machine to overflow a kernel stack buffer and execute code. On SUSE Linux 9.3 and 10.0 it is possible for a physically close attacker to cause a kernel crash, but no code execution. SUSE Linux Enterprise Server 9 contains the Atheros driver, but is not vulnerable to the problem due to the age of the driver. Other SUSE Linux and openSUSE versions do not contain the Atheros driver. This issue is tracked by the Mitre CVE ID CVE-2006-6332. We are currently preparing fixed packages. - Next kernel update We are currently preparing the next kernel update round of our 2.6 kernels, scheduled to be delivered before Christmas. There are no outstanding critical security problems, the release target is mostly rolling in local denial of service problems and other bugfixes. - gpg stack corruption A stack corruption which potentially can lead to code execution was found in the GNU Privacy Guard, versions 1 and 2. This issue is tracked by the Mitre CVE ID CVE-2006-6235. Updates are currently in QA. - evince code execution The PDF and Postscript viewer evince is also affected by the postscript triggered stack overflow found in "gv", tracked by the Mitre CVE ID CVE-2006-5864. Updated packages for this problem are currently in QA. - koffice PPT document denial of service A denial of service (crash) with PPT documents was reported in the Laola import filters of koffice. QA found that those problems are not fully fixed yet and we are currently reviewing and fixing the rest of them. ______________________________________________________________________________ 3) 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 <file> replacing <file> with the name of the file containing the announcement. The output for a valid signature looks like: gpg: Signature made <DATE> using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team <security@suse.de>" where <DATE> 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 integrity of a package needs to be verified to ensure that it has not been tampered with. The internal 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, replacing <file.rpm> 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 included at the end of this announcement. - SUSE runs two security mailing lists to which any interested party may subscribe: opensuse-security@opensuse.org - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to <opensuse-security+subscribe@opensuse.org>. 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 <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>. ===================================================================== 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, 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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