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December 2002

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SuSE Security Announcement: cyrus-imapd (SuSE-SA:2002:048)
by Sebastian Krahmer 20 Dec '02

20 Dec '02

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: cyrus-imapd Announcement-ID: SuSE-SA:2002:048 Date: Fri Dec 20 18:00:00 MET 2002 Affected products: 7.1, 7.2, 7.3, 8.0, 8.1, SuSE eMail Server III, 3.1, SuSE Linux Connectivity Server, SuSE Linux Enterprise Server 7, SuSE Linux Enterprise Server 8, SuSE Linux Office Server, SuSE Linux Openexchange Server 4 Vulnerability Type: remote command execution Severity (1-10): 6 SuSE default package: no Cross References: - Content of this advisory: 1) security vulnerability resolved: Buffer overflows in cyrus-imapd. problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - MySQL - traceroute - CUPS - imap-2000c 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information The cyrus imapd contains a buffer overflow which could be exploited by remote attackers prior to logging in. Attackers could generate oversized error messages and overflow buffers inside imapd. Additionally to this fix, an overflow in the SASL library (as used by the cyrus imapd) has been fixed. This bug only affects SuSE Linux 8.1, the SuSE Linux Enterprise Server 8 and the SuSE Linux Openexchange Server. Since there is no workaround possible except shutting down the IMAP server, we strongly recommend an update. 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. To be sure the update takes effect you have to restart the IMAP server by executing the following commands as root: /etc/rc.d/cyrus restart and (if using saslauthd) /etc/rc.d/saslauthd restart i386 Intel Platform: SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cyrus-imapd-2.1.9-41.i… 47785bc84eeebbddcd50a267684d6500 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cyrus-sasl2-2.1.7-52.i… b740ad1a675f2c14ffc33097a1c41ee5 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cyrus-imapd-2.1.9-41.i… 0119fa57ef939939357dd86cd1ec1ea6 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/cyrus-sasl2-2.1.7-52.i… fbf3bad7c6542e45d699c0d69b0798c0 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/cyrus-imapd-2.1.9-41.sr… a51f1b81249cad5e48e5d05535ae2ab8 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/cyrus-sasl2-2.1.7-52.sr… 98cba687c3d2c89761cc6e9b34cd7e71 SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/n4/cyrus-imapd-2.0.16-361.i386.… 3dd8c8c26753cddb56f9adb2e0a352fe patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/n4/cyrus-imapd-2.0.16-361.i386.… 612e6f1652c536b316a6a480389dc729 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/cyrus-imapd-2.0.16-361.src.… 7c4cd098d4c96726fc2ed21597a8ae3c SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/n2/cyrus-imapd-2.0.16-361.i386.… bd294c4539c895d16ff11fc8298a6c44 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/cyrus-imapd-2.0.16-361.src.… 689bd12bc2fefc627dd13b45cca68922 SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/n2/cyrus-imapd-2.0.16-362.i386.… feb98be591cd938dee6fbff1b09e11d0 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/cyrus-imapd-2.0.16-362.src.… 2beb58cb743a0923cefbceccea871df2 SuSE-7.1: ftp://ftp.suse.com/pub/suse/i386/update/7.1/n2/cyrus-imapd-2.0.12-69.i386.r… 61f850212a2d2ae72a7446df3b96e891 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/cyrus-imapd-2.0.12-69.src.r… 77252f38facbbde01839e817a2f0514d Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n2/cyrus-imapd-2.0.16-58.sparc… 093642ae51cad7a03660ea5b89dd533e source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/cyrus-imapd-2.0.16-58.src.… 4e1bc8e98e61918cce6976c7c373bc53 AXP Alpha Platform: SuSE-7.1: ftp://ftp.suse.com/pub/suse/axp/update/7.1/n2/cyrus-imapd-2.0.12-24.alpha.r… 4194ee9cc379d0d8448029480c7b36b3 source rpm(s): ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/cyrus-imapd-2.0.12-24.src.rpm 08ab826ab71a531bb51c12b7fed19919 PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n2/cyrus-imapd-2.0.16-208.ppc.rpm 3d57fefb8f9d23a6e863652f148fd4ff source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/cyrus-imapd-2.0.16-208.src.r… 4e883ee340e061c948c1835aff15e50b SuSE-7.1: ftp://ftp.suse.com/pub/suse/ppc/update/7.1/n2/cyrus-imapd-2.0.12-32.ppc.rpm d518ece0e01cf731ab2d19c73c82a2de source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/cyrus-imapd-2.0.12-32.src.rpm d61b35b30f5704194506ec1238f741bf ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - MySQL Stefan Esser from e-matters discovered security critical bugs in the MySQL server and client libraries. New packages are currently being built and will soon be available. We will inform you with a separate advisory when all packages for all platforms are available. - traceroute The recent update for the traceroute package did not fix all overflows properly. New packages have been prepared and should already be available on our ftp servers. The newly found bugs are not critical since the last update for traceroute drops the superuser privileges before the overflow can be triggered. However since the attacker could gain access to a raw socket upon successfull exploitation, an update is recommended. - CUPS iDEFENSE reported various bugs in the CUPS printing system. These bugs could lead to a remote compromise of the system. New packages are already available on our ftp servers. We will inform you with a separate advisory when all packages for all platforms are available. - imap-2000c The IMAP implementation of the University of Washington contained a buffer overflow. This overflow happens after the authentication phase, so only remote attackers with a valid IMAP account can exploit this bug. They will obtain a shell with their user privileges if exploited properly. ;-) Only versions less or eqal to imap-2000c (as shipped up to SL 7.3) are affected. The author of this imapd does not offer patches for older versions but rather suggests to use the newest version available at ftp://ftp.cac.washington.edu/mail/imap.tar.Z Due to the habbit of the author and the little impact of this bug, we do not provide patched pre-build packages. ______________________________________________________________________________ 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(a)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(a)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(a)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(a)suse.com>. suse-security-announce(a)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(a)suse.com>. For general information or the frequently asked questions (faq) send mail to: <suse-security-info(a)suse.com> or <suse-security-faq(a)suse.com> respectively. ===================================================================== SuSE's security contact is <security(a)suse.com> or <security(a)suse.de>. The <security(a)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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SuSE Security Announcement: OpenLDAP2 (SuSE-SA:2002:047)
by Sebastian Krahmer 06 Dec '02

06 Dec '02

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: OpenLDAP2 Announcement-ID: SuSE-SA:2002:047 Date: Fri Dec 6 11:11:11 MET 2002 Affected products: 7.1, 7.2, 7.3, 8.0, SuSE eMail Server III, 3.1, SuSE Linux Connectivity Server, SuSE Linux Enterprise Server 7, SuSE Linux Office Server Vulnerability Type: remote command execution Severity (1-10): 6 SuSE default package: no Cross References: - Content of this advisory: 1) security vulnerability resolved: Buffer overflows in openldap2. problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - traceroute-nanog - gnuplot 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information OpenLDAP is the Open Source implementation of the Lightweight Directory Access Protocol (LDAP) and is used in network environments for distributing certain information such as X.509 certificates or login information. The SuSE Security Team reviewed critical parts of that package and found several buffer overflows and other bugs remote attackers could exploit to gain access on systems running vulnerable LDAP servers. In addition to these bugs, various local exploitable bugs within the OpenLDAP2 libraries (openldap2-devel package) have been fixed. Since there is no workaround possible except shutting down the LDAP server, we strongly recommend an update. 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. To be sure the update takes effect you have to restart the LDAP server by executing the following command as root: /etc/rc.d/ldap restart i386 Intel Platform: SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/openldap2-2.0.23-143.i386.rpm 0facbec09078e1a849b629a335d25dcf ftp://ftp.suse.com/pub/suse/i386/update/8.0/n4/openldap2-devel-2.0.23-143.i… 90b2aff137bd510930835b7a7cb7bc1e patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/openldap2-2.0.23-143.i386.pa… aac122b6dda874c97d2e3f8e43a33897 ftp://ftp.suse.com/pub/suse/i386/update/8.0/n4/openldap2-devel-2.0.23-143.i… e032d25cd37167b956a41b45e7c1bc60 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/openldap2-2.0.23-143.src.rpm 773c24a1654055b692dbfe6c1ce436f2 SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/n2/openldap2-2.0.12-44.i386.rpm 0c3078060330559ae49d67cdb0def908 ftp://ftp.suse.com/pub/suse/i386/update/7.3/n2/openldap2-devel-2.0.12-44.i3… 4d09ba68655344abc273f7cb67fee482 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/openldap2-2.0.12-44.src.rpm 58706b1104fec0d6a6533e5f6decb8cd SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/n2/openldap2-2.0.11-67.i386.rpm 28f575d89d8fbb9c269b158d12b599a6 ftp://ftp.suse.com/pub/suse/i386/update/7.2/n2/openldap2-devel-2.0.11-67.i3… 7edf8a034f6de9ec15fd0d0e683e25e3 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/openldap2-2.0.11-67.src.rpm 1aac2bc81f82065513845a0e923433bf SuSE-7.1: ftp://ftp.suse.com/pub/suse/i386/update/7.1/n2/openldap2-2.0.11-66.i386.rpm 901b6452a24470b5cf39223e4b4a611d source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/openldap2-2.0.11-66.src.rpm d5d0a0a397f919b2f5d644c517dd56a5 Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n2/openldap2-2.0.12-27.sparc.r… 4639159e2de3a53115b4a7a918a79864 ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n2/openldap2-devel-2.0.12-27.s… 609773f10ce2ea8953f4fc8772f4af23 source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/openldap2-2.0.12-27.src.rpm 70758c3e7c36f10a53980eaeb6bddea3 AXP Alpha Platform: SuSE-7.1: ftp://ftp.suse.com/pub/suse/axp/update/7.1/n2/openldap2-2.0.11-30.alpha.rpm 3d6bf0861070044c54ed52e8777192b6 source rpm(s): ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/openldap2-2.0.11-30.src.rpm 3e0867844268b399d6ac2b9788d017f4 PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n2/openldap2-2.0.12-54.ppc.rpm fa2268bf1629c69db048371b67a1e177 ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n2/openldap2-devel-2.0.12-54.ppc… e5f6ea2f05c6f5904834e8083ef8502b source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/openldap2-2.0.12-54.src.rpm 5c88d479f0f54b6b933f11a63e8d0c42 SuSE-7.1: ftp://ftp.suse.com/pub/suse/ppc/update/7.1/n2/openldap2-2.0.11-27.ppc.rpm b6630f01be5e342cba2167a1f69583bf source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/openldap2-2.0.11-27.src.rpm 5664341323793814db38b162d4cf07dc ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - traceroute-nanog Due to recent postings on bugtraq(a)securityfocus.com new traceroute-nanog packages are currently being built and will be released as soon as possible. - gnuplot An error in a patch for french documentation added by SuSE leads to a buffer overflow in gnuplot that can be exploited to gain root privileges by a local attacker. gnuplot is installed setuid root on SuSE Linux before (excluding) 8.0 to be able to display graphics with the SVGA library. We have provided update packages at the usual location that fix the vulnerability. ______________________________________________________________________________ 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(a)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(a)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(a)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(a)suse.com>. suse-security-announce(a)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(a)suse.com>. For general information or the frequently asked questions (faq) send mail to: <suse-security-info(a)suse.com> or <suse-security-faq(a)suse.com> respectively. ===================================================================== SuSE's security contact is <security(a)suse.com> or <security(a)suse.de>. The <security(a)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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