===================================================================== CERT-Renater Note d'Information No. 2005/VULN040 _____________________________________________________________________ DATE : 18/01/2005 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Systems running php4, mod_php4. ====================================================================== ______________________________________________________________________________ SUSE Security Announcement Package: php4, mod_php4 Announcement-ID: SUSE-SA:2005:002 Date: Monday, Jan 17th 2005 18:00 MEST Affected products: 8.1, 8.2, 9.0, 9.1, 9.2 SUSE Linux Enterprise Server 8, 9 Vulnerability Type: remote code execution Severity (1-10): 7 SUSE default package: no Cross References: CAN-2004-1019 CAN-2004-1065 http://bugs.php.net/bug.php?id=25753 Content of this advisory: 1) security vulnerability resolved: - buffer overflows in PHP - PHP source code disclosure problem description 2) solution/workaround 3) special instructions and notes 4) package location and checksums 5) pending vulnerabilities, solutions, workarounds: 6) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion PHP is a well known, widely-used scripting language often used within web server setups. Stefan Esser and Marcus Boerger found several buffer overflow problems in the unserializer functions of PHP (CAN-2004-1019) and Ilia Alshanetsky (CAN-2004-1065) found one in the exif parser. Any of them could allow remote attackers to execute arbitrary code as the user running the PHP interpreter. Additionally a bug where the server would disclose php sourcecode under some circumstances has been fixed. 2) solution/workaround There is no workaround known besides disabling PHP. Therefore we recommend to install the updated packages. 3) special instructions and notes If you use php as module within apache you have to restart the server by executing the following command as root: /usr/sbin/rcapache restart or if you use the apache2 server /usr/sbin/rcapache2 restart 4) package location and checksums 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 for installation from the maintenance web. x86 Platform: SUSE Linux 9.2: ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/php4-4.3.8-8.3.i586.rpm e871c76bb7c0ba1fc34268e05ee54e94 ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/apache2-mod_php4-4.3.8-8.3.i586.rpm e9e0e5cbfa8805b6a5866cd91db1e715 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/php4-4.3.8-8.3.i586.patch.rpm 7bc595dd946b7287c1b590283526500b ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/apache2-mod_php4-4.3.8-8.3.i586.patch.rpm e72c58f0d9fbb9d7b0e23251f50b22c5 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/php4-4.3.8-8.3.src.rpm e80aff98a2d6bdcb56bf6ed7e1731611 SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/php4-4.3.4-43.22.i586.rpm 01ddb36914f644c65165250b7c7689e8 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/apache2-mod_php4-4.3.4-43.22.i586.rpm 9a3db7a8dcc0e5d6b49911d25e755069 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/mod_php4-core-4.3.4-43.22.i586.rpm c072a97d0081976292d4d5005019dccd patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/php4-4.3.4-43.22.i586.patch.rpm 01853c982ea0c89faecfe3fb568313b6 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/apache2-mod_php4-4.3.4-43.22.i586.patch.rpm dd64ede42cf3a31a99df2e90ebb597a1 ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/mod_php4-core-4.3.4-43.22.i586.patch.rpm d499fac997192f14e949398df2624a9d source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/php4-4.3.4-43.22.src.rpm 7f23c05761153fec8786c9261e60a49a SUSE Linux 9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/mod_php4-4.3.3-183.i586.rpm bbf8be6995d2590af1e2a5d12d101ba6 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/apache2-mod_php4-4.3.3-183.i586.rpm d8c08e3e05104d0a291cc1b98111c3a1 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/mod_php4-core-4.3.3-183.i586.rpm cb01290bc7c2b968eacea15114033ad4 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/mod_php4-4.3.3-183.i586.patch.rpm d69e6d3885258f06059f0c8cc4b3fc95 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/apache2-mod_php4-4.3.3-183.i586.patch.rpm 1d8029716edec5d69b9e9f54d2b311df ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/mod_php4-core-4.3.3-183.i586.patch.rpm a9d2199cb9d2ddb904a723d0a6107300 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/mod_php4-4.3.3-183.src.rpm 59f6c6664cad5ded05ce4b22d856d496 SUSE Linux 8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/mod_php4-4.3.1-174.i586.rpm 5a477c5733f83b776f746bc3431d8207 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/apache2-mod_php4-4.3.1-174.i586.rpm 90eb5f5d40142d7d34a3b46c5ce87ac8 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/mod_php4-core-4.3.1-174.i586.rpm f55cf3b586c8a921700e8ecfb8ad5941 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/mod_php4-4.3.1-174.i586.patch.rpm e6c583ddaa03bd85729c46d9ddfc75dd ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/apache2-mod_php4-4.3.1-174.i586.patch.rpm 3053986191c3dd2354b931ea31fc9208 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/mod_php4-core-4.3.1-174.i586.patch.rpm 7a8d67f1e02ea516f21df3ad69107b00 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/mod_php4-4.3.1-174.src.rpm 1d709df9d796d6f723590bc31afe9b18 SUSE Linux 8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-4.2.2-485.i586.rpm f597d7af4c5c3eb3fa74ead654ac79e3 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-core-4.2.2-485.i586.rpm 136007f47679877b999eeee170bc0003 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-4.2.2-485.i586.patch.rpm 07b674f1ec878bbb6ee68e6da52144d4 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-core-4.2.2-485.i586.patch.rpm 30c83209b3e7177f9ac34365f51f9c72 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/mod_php4-4.2.2-485.src.rpm e6a23b4c8cbba800d002104da80fbc17 x86-64 Platform: SUSE Linux 9.2: ftp://ftp.suse.com/pub/suse/x86_64/update/9.2/rpm/x86_64/php4-4.3.8-8.3.x86_64.rpm 96c10340cd1e9dbd499ceb264ff6862b ftp://ftp.suse.com/pub/suse/x86_64/update/9.2/rpm/x86_64/apache2-mod_php4-4.3.8-8.3.x86_64.rpm 0650c7390f4b341ad496030e6d7c7585 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.2/rpm/src/php4-4.3.8-8.3.src.rpm e80aff98a2d6bdcb56bf6ed7e1731611 SUSE Linux 9.1: ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/php4-4.3.4-43.22.x86_64.rpm d7b5bd55bd381bbf674ad9111e336741 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/apache2-mod_php4-4.3.4-43.22.x86_64.rpm 0b8d4a5de7c53fef7364ef2883269c95 ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/mod_php4-core-4.3.4-43.22.x86_64.rpm f973f7d09700571dca8221aaffa8a74b patch rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/php4-4.3.4-43.22.x86_64.patch.rpm cf568e895d1b4e79ba0a87c3ddfa68fe ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/apache2-mod_php4-4.3.4-43.22.x86_64.patch.rpm d74c95e6d64ab16ebd8b0bfc1bfda08f ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/mod_php4-core-4.3.4-43.22.x86_64.patch.rpm 12c7794749389feaec02b707da12c4d4 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/php4-4.3.4-43.22.src.rpm 61ae620d5e5bb9c6ebb53c77fdd2f0ee SUSE Linux 9.0: ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/mod_php4-4.3.3-183.x86_64.rpm 42ddc755c8a14eda9a2e7527e1c6ab83 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/apache2-mod_php4-4.3.3-183.x86_64.rpm 96cf0ad7d9dd5faed47a81619a3f11e9 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/mod_php4-core-4.3.3-183.x86_64.rpm a4af66488b211562da363b342c80fabd patch rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/mod_php4-4.3.3-183.x86_64.patch.rpm 564fc4425ba3d8c995836b61c93082f9 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/apache2-mod_php4-4.3.3-183.x86_64.patch.rpm 67580deaea8aed5c1f6af1c8fb5f7889 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/mod_php4-core-4.3.3-183.x86_64.patch.rpm bfe305060c4ca74d88b8503996a953ae source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/mod_php4-4.3.3-183.src.rpm e1f76b408a70416b1e80dd2fb8f6721a ______________________________________________________________________________ 5) Pending vulnerabilities in SUSE Distributions and Workarounds: Please read our weekly summary report for more information. ______________________________________________________________________________ 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 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 to verify the signature of the package, where 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-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 . 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. Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 151 bd de l'Hopital | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================