-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: clamav Announcement ID: SUSE-SA:2007:026 Date: Fri, 20 Apr 2007 15:00:00 +0000 Affected Products: SUSE LINUX 9.3 SUSE LINUX 10.0 SUSE LINUX 10.1 openSUSE 10.2 SUSE SLES 9 Open Enterprise Server Novell Linux POS 9 SUSE SLES 10 Vulnerability Type: remote code execution Severity (1-10): 7 SUSE Default Package: no Cross-References: CVE-2007-1745, CVE-2007-1997 Content of This Advisory: 1) Security Vulnerability Resolved: clamav version upgrade to 0.90.2 Problem Description 2) Solution or Work-Around 3) Special Instructions and Notes 4) Package Location and Checksums 5) Pending Vulnerabilities, Solutions, and Work-Arounds: See SUSE Security Summary Report. 6) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Problem Description and Brief Discussion The AntiVirus scan engine clamav was updated to version 0.90.2. Among other bugs two security problems were fixed which could cause a remote denial of service attack against clamav or potentially be used to execute code. - CVE-2007-1745: The chm_decompress_stream function in libclamav/chmunpack.c leaks file descriptors, which has unknown impact and attack vectors involving a crafted CHM file. - CVE-2007-1997: Integer signedness error in the (1) cab_unstore and (2) cab_extract functions in libclamav/cab.c might allow remote attackers to execute arbitrary code via a crafted CHM file that contains a negative integer, which passes a signed comparison and leads to a stack-based buffer overflow. Updates for this problem were released on Tuesday April 17. 2) Solution or Work-Around There is no known workaround, please install the update packages. 3) Special Instructions and Notes None. 4) Package Location and Checksums The preferred method for installing security updates is to use the YaST Online Update (YOU) tool. YOU detects which updates are required and automatically performs the necessary steps to verify and install them. Alternatively, download the update packages for your distribution manually and verify their integrity by the methods listed in Section 6 of this announcement. Then install the packages using the command rpm -Fhv <file.rpm> to apply the update, replacing <file.rpm> with the filename of the downloaded RPM package. x86 Platform: openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/clamav-0.90.2-0.1.i586.rpm 665649e5d1b5f2e2ec072ff6e5acff96 SUSE LINUX 10.1: ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/clamav-0.90.2-0.2.i586.rpm a3e3616c1dd19b09be4ae1be22279221 SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/clamav-0.90.2-0.1.i586.rpm 3a1aefec54a30a216a46399d46c4dfa5 SUSE LINUX 9.3: ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/clamav-0.90.2-0.1.i586.rpm 31696e4e0837aab02429695bbb11093d Power PC Platform: openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/clamav-0.90.2-0.1.ppc.rpm 1a497a6200da361e3799f4f2ab4091e7 SUSE LINUX 10.1: ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/clamav-0.90.2-0.2.ppc.rpm 12c6ed4e2cbb5405838deb2e22bced54 SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/clamav-0.90.2-0.1.ppc.rpm 704a40de922c2eb8c5841c40fe19050c x86-64 Platform: openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/clamav-0.90.2-0.1.x86_64.rpm 641d35e63c0ce45bb86099a4a26d4fe6 SUSE LINUX 10.1: ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/clamav-0.90.2-0.2.x86_64.rpm 14ee14fc3cbcf9f08937b97998441bef SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/clamav-0.90.2-0.1.x86_64.rpm ca599326fc97e05e41e6ac793ee63c21 SUSE LINUX 9.3: ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/clamav-0.90.2-0.1.x86_64.rpm 1a00a64d6b88ce2465b65d61cf2031ed Sources: openSUSE 10.2: ftp://ftp.suse.com/pub/suse/update/10.2/rpm/src/clamav-0.90.2-0.1.src.rpm 2d24ba99281475f4884dd706dea265c9 SUSE LINUX 10.1: ftp://ftp.suse.com/pub/suse/update/10.1/rpm/src/clamav-0.90.2-0.2.src.rpm 7bc311314710d124861172e485056ccd SUSE LINUX 10.0: ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/clamav-0.90.2-0.1.src.rpm 99ac20be92f82f512d5f4a59feee6460 SUSE LINUX 9.3: ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/clamav-0.90.2-0.1.src.rpm 7cdb83cd4f29d4963cf4fa563b51d9fc Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web: Open Enterprise Server http://support.novell.com/techcenter/psdb/50a5cb718f20761dd7e0b6b4e0935c52.h... Novell Linux POS 9 http://support.novell.com/techcenter/psdb/50a5cb718f20761dd7e0b6b4e0935c52.h... SUSE SLES 10 http://support.novell.com/techcenter/psdb/50a5cb718f20761dd7e0b6b4e0935c52.h... SUSE SLES 9 http://support.novell.com/techcenter/psdb/50a5cb718f20761dd7e0b6b4e0935c52.h... ______________________________________________________________________________ 5) Pending Vulnerabilities, Solutions, and Work-Arounds: See SUSE Security Summary Report. ______________________________________________________________________________ 6) 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 where you saved 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 the integrity of a package needs to be verified to ensure that it has not been tampered with. 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) Using the internal gpg signatures of the rpm package 2) MD5 checksums as provided in this announcement 1) 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 at the end of this announcement. 2) If you need an alternative means of verification, use the md5sum command to verify the authenticity of the packages. Execute the command md5sum <filename.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 SUSE security announcement. Because the announcement containing the checksums is cryptographically signed (by security@suse.de), the checksums show proof of the authenticity of the package if the signature of the announcement is valid. Note that the md5 sums published in the SUSE Security Announcements are valid for the respective packages only. Newer versions of these packages cannot be verified. - 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>. ===================================================================== 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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