-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: imp Announcement-ID: SuSE-SA:2003:0008 Date: Tuesday, Feb. 18th 2003 18:20 MET Affected products: 7.3, 8.0, 8.1 Vulnerability Type: remote system compromise Severity (1-10): 3 SuSE default package: no Cross References: CAN-2003-0025 Content of this advisory: 1) security vulnerability resolved: Multiple SQL-Injection problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - mod_php4 - libmcrypt - vim - pam_xauth - openldap2 - mpg123 - syslinux 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information IMP is a well known PHP-based web-mail system. Some SQL-injection vulnerabilities were found in IMP 2.x that allow an attacker to access the underlying database. No authentication is needed to exploit this bug. An attacker can gain access to protected information or, in conjunction with PostgreSQL, execute shell commands remotely. There is no temporary fix known. Please install the new packages from our FTP servers. 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/imp-2.2.6-248.i586.rpm 17b26d9e48a75cc499b6d4da0c1067c3 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/imp-2.2.6-248.src.rpm 6e3e250a900070b1571f8f3b050616a8 SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/zima1/imp-2.2.6-246.i386.rpm d50ed25aecc357a720f901676a399def source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/imp-2.2.6-246.src.rpm 7e9fcc065b3096fc7f40f1c958ea9b0b SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/zima1/imp-2.2.6-247.i386.rpm bf74d9df4b7e9b02d922609c226cff92 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/imp-2.2.6-247.src.rpm b858c113f66145fdc38d6629b1dbafb8 Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zima1/imp-2.2.6-85.sparc.rpm b0bf87d69dfcd8aae2ec3d3a07d14899 source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/imp-2.2.6-85.src.rpm bd236d18ab61c67fe4929be6ff7fa82a AXP Alpha Platform: PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zima1/imp-2.2.6-189.ppc.rpm 0e186259b4441dd1347e4e5e6f14aac9 source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/imp-2.2.6-189.src.rpm 8688d0e39dae720267a568562a0548c3 ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - mod_php4 A buffer overflow in the wordwrap() function has been reported. New packages will be prepared and should be available on our ftp servers soon. - 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. - vim Georgi Guninski <guninski@guninski.com> reported a security problem with vim's modeline support that allows the execution of commands when a malformed file was opened. This bug may even be exploited through MUAs like mutt. We recommend to turn off this feature globally by adding the line: set modelines=0 to the global configuration file /etc/vimrc. All currently supported SuSE products are affected by this problem. Modeline support is disabled by default in future version of SuSE Linux. - openldap2 The BER decoding routines of the openldap2 packages for SL 8.1 and SLES8 contained a bug which allowed remote attackers to mount a DoS attack against vulnerable OpenLDAP servers. It is necessary to update the openldap2-devel, openldap2-client and openldap2 packages in order to prevent such attack. New packages will be available on our FTP servers soon. - mpg123 Our update directories on our ftp server for the SuSE Linux distributions 7.3, 8.0 and 8.1 contain update packages for the mpg123 package. These updates fix a security problem with mpg123 that can result in the execution of arbitrary commands upon playing a specially crafted mpeg audio layer 3 file. Other versions of SuSE Linux than mentioned above do not contain a vulnerable version of the mpg123 mp3 player. - pam_xauth SuSE Linux starting with version 7.2 contain a PAM (Pluggable Authentication Module) called pam_xauth which can be used to pass on X11-authentification data (cookies, see "man Xsecurity") if a user uses /bin/su to assume the privileges of another user. Since the possession of the X11 authentification cookie grants access to the running X-server and all of its resources, this should be considered a security problem if the feature cannot be turned off by a non-root user. The presence of the pam_xauth PAM does not represent a threat such if it is not enabled by default. By default, the pam_xauth module is not enabled in all SuSE products. We recommend to use the /usr/X11R6/bin/sux wrapper script for the su command that comes with SuSE products to pass on X11 authentification data if so desired intentionally by the user. - syslinux The syslinux bootloader has been found vulnerable to a not closely named security weakness by Dan Hollis if the bootloader program is installed setuid root. We do not believe that elevated privileges are beneficial for a bootloader. The packages in SuSE Linux are not vulnerable to the weakness. ______________________________________________________________________________ 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 iQEVAwUBPlJsHHey5gA9JdPZAQE+zwf+NyPbuB8KZRlx2060gz6rMIbEpEgD1Ac/ hicF2bXAcAMG1uQDJOdVEZ2byjCzPqvToBCtB+fxoZEny4rL+36zOrH2hiJ6tRzf ZEAL+tpFF2BOJWSez46Yhr1rbCi/pEeRT4k8zRsimIxKhAbKYh3eq29EaslKjbEX nQ4o602vsTzSKJYamoN1mhSr8159XPk2RHSwa6+uQgFOLys9oMfGaOR0v+dKGK8+ jykUCgcyb2VN3OH3Nq4umYayzAzweh4Z7Xw+5ubkIHK5yb+xHM84cx8vCnpu1ZWo qGd+ZNEZOee2q2V/3fkI/E5IxGKM+OYiSAWsAqKCciO8Nz3knLxKSA== =p9iC -----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)