-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: mod_php4 Announcement-ID: SuSE-SA:2003:0009 Date: Tuesday, Feb. 18th 2003 18:22 MET Affected products: 8.1 SuSE Linux Enterprise Server 8 Vulnerability Type: remote system compromise Severity (1-10): 2 SuSE default package: no Cross References: CAN-2002-1396 Content of this advisory: 1) security vulnerability resolved: buffer overflow problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - libmcrypt 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information The Apache module mod_php4 supports the widely used Web scripting language PHP. Under some special circumstances a buffer overflow can be triggered in mod_php4's wordwrap() function. This buffer overflow can be used to overwrite heap memory and possibly can lead to remote system compromise. Just mod_php4 versions greater than 4.1.2 and less than 4.3.0 are vulnerable. This affects SuSE Linux 8.1 and all SuSE Linux Enterprise Server 8 based products. There is no temporary fix known. Please install the new packages from our FTP servers. After updating the mod_php4 module has to be reloaded by Apache. This can be done by restarting the apache webserver using the following command as root: rcapache restart 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. Intel i386 Platform: SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-4.2.2-168.i586.rpm 5a6c81dc2b214142dbea1dcef06d1fcf patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-4.2.2-168.i586.patch.rpm 8e95af112e690034e8e851143d63db46 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-core-4.2.2-168.i586.rpm 6c2931abeab4433c1c243b7a96505366 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-core-4.2.2-168.i586.patch.rpm dacf9f57a098b292e62b9ddc25a84a40 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-devel-4.2.2-168.i586.rpm ddaa55a270c028fd0afd3159b1299f61 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-devel-4.2.2-168.i586.patch.rpm 702c465ede7dbeb6c4652b2f3ea1c5f4 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-servlet-4.2.2-168.i586.rpm 87d7b9d5e5a3f5e25aa6096903979fdd patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-servlet-4.2.2-168.i586.patch.rpm a1fef4f3966a83de8a11a36f395b9a82 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-aolserver-4.2.2-168.i586.rpm 9579610398d92fefbf859e33fd500401 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/mod_php4-aolserver-4.2.2-168.i586.patch.rpm 1bd0367d2fef87ae1fc134825c17319b source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/mod_php4-4.2.2-168.src.rpm 71d85b24a8c57a45a5a66fab56c7b1b8 ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - libmcrypt Several buffer overflows in libmcrypt were discovered by Ilia Alshanetsky. The buffer overflows can lead to system compromise. New packages are currently being build. ______________________________________________________________________________ 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 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 "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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-----END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv iQEVAwUBPlJsKney5gA9JdPZAQGrfwf9FgDHtj+9HSxWYSBjkKmg/5KXwUNih/JS 8K92UFyP3DTsqWlEzI+v+oUCtieKlOuOqDgdTp+vgpTZCn74dpPsVbNamtkxbx9i u0nyG3lvFmCunZcOLlzkrstoxMSFx5VeT1iKgYbdtJHgWqeRWch6q1OkI6xxDEQY i5XZNfUjDP4DOQpqaCzxg3qazxggHCcr+6vkQHOoove/63YQ8amkw3hjHFi6jR/X a7Fqzfa4WKajZkA8tvlTPcE3MjG3lW49uS/xLVcNeOcpE8n/Ml1HKdeG3P+o1PEc T3uvBIpdjK/5CelwClOwUjE7sIZ+mh09/ek3XBt4EzJ2Gy1q9XFq8w== =uvPL -----END PGP SIGNATURE----- Bye, Thomas -- Thomas Biege <thomas@suse.de> SuSE Linux AG,Deutschherrnstr. 15-19,90429 Nuernberg Function: Security Support & Auditing "lynx -source http://www.suse.de/~thomas/contact/thomas.asc | gpg --import" Key fingerprint = 7254 B15D B3C4 943F 485E 0BBD 8ECC D7CB C200 A213 -- Swimming through the Void We hear the Words We lose Ourselves But we find it All -- Serj Tankian (Arials Lyrics)