January 2004 - openSUSE Security Announce

SUSE Security Announcement: gaim (SuSE-SA:2004:004)
by Thomas Biege 29 Jan '04

29 Jan '04

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: gaim Announcement-ID: SuSE-SA:2004:004 Date: Thrusday, Jan 29th 2004 10:30 MET Affected products: 8.0, 8.1, 8.2, 9.0 SuSE Linux Desktop 1.0 Vulnerability Type: remote system compromise Severity (1-10): 5 SUSE default package: no Cross References: Content of this advisory: 1) security vulnerability resolved: - two buffer overflows problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - kernel binaries for SLES8 AMD64 - mc - mod_gzip - tripwire - XDM (XFree86, xf86) - 3ddiag - mod_auth_shadow - cvsup - nmap - netpbm - zebra - quagga - tcpdump - mod_python 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information Gaim is a multi-protocol instant-messaging client. Stefan Esser found 12 vulnerabilities in gaim that can lead to a remote system compromise with the privileges of the user running GAIM. The GAIM package that SUSE LINUX ships is affected by just two of these bug: - Yahoo Packet Parser Overflow - HTTP Proxy Connect Overflow The first vulnerability is easy to exploit and results in a classic stack overflow which can be used to execute arbitrary code. The latter vulnerability requires the gaim client use a HTTP proxy under the control of the attacker. The exploitation of this bug results in arbitrary code execution too. There is no known workaround. Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, to apply the update use the command "rpm -Fhv file.rpm". Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. Intel i386 Platform: SuSE-9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/gaim-0.67-65.i586.rpm 09f8d12dd52e246cf32dca8ad3374f39 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/gaim-0.67-65.i586.patc… 3a633e341b9e56facdbe0250b55dd33a source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/gaim-0.67-65.src.rpm 5ee6a86077c0297a64815532782f7a54 SuSE-8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/gaim-0.59.8-60.i586.rpm 7a269744304f72bf951c7bd6974560f2 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/gaim-0.59.8-60.i586.pa… e7b18f0da02c1c4392dc1b03e835a827 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/gaim-0.59.8-60.src.rpm ae7d7b1c9735696244547a0d6a5ee92e SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/gaim-0.59-158.i586.rpm 22b1d4be5737906f8ff0975918279034 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/gaim-0.59-158.i586.pat… 7644020869e92cc980b881efebf9d617 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/gaim-0.59-158.src.rpm cd1532f71a79ed32d016d456a844ff4b SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/gnm3/gaim-0.50-187.i386.rpm 7dcb581b78bf8ab61e82bf0836a4357e patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/gnm3/gaim-0.50-187.i386.patch.r… 5a6f596538edc56e0b3a70a23200c21e source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/gaim-0.50-187.src.rpm d38c8da629941eecef7f75d6a5ea9e80 ______________________________________________________________________________ 2) Pending vulnerabilities in SUSE Distributions and Workarounds: - kernel binaries for SLES8 AMD64 Due to a human failure the kernel binaries of SuSE Linux Enterprise Server 8 for AMD64 lack the fix described in SuSE-SA:2004:003. The kernel-source packages and the packages for IA64 are *not* affected. New packages are available at our maintenance-web. - mc By using a special combination of links in archive files it is possible to execute arbitrary commands while mc tries to open it in its VFS. New packages are available on our FTP servers. - mod_gzip (apache-contrib) The apache module mod_gzip is vulnerable to remote code execution while running in debug-mode. We do not ship this module in debug-mode but future versions will include the fix. Additionally the mod_gzip code was audited to fix more possibly security related bugs. After more testing a new apache-contrib RPM package will be released. - tripwire Tripwire is a file integrity checker. The version of tripwire included with SuSE Linux 9.0 crashs when a requested file does not exists. New packages are available on our FTP servers. - XDM (XFree86, xf86) A missing check for failure conditions in the PAM code of XDM can lead to local root access in conjunction with Kerberos or other authentication methods. New packages are available on our FTP servers. - 3ddiag Some 3ddiag scripts handle temporary files in an insecure manner. Thanks to Stefan Nordhausen <nordhaus at informatik.hu-berlin.de> for reporting some of these issues. New packages are available on our FTP servers. - mod_auth_shadow (apache-contrib) This apache module ignores account expiration dates. The update will be released together with mod_gzip. - cvsup cvsup uses a library path which is world-writeable. This behavior can lead to local privilege escalation. Thanks to Matthias Andree for notifying us. Upcoming SuSE Linux versions have an automatic check enabled to detect these types of bugs. New packages are available on our FTP servers. - nmap Due to a bad interaction between kernel and user-space for pre- calculated IP checksums nmap did not work on SUSE LINUX 9.0. New packages are available on our FTP servers. - netpbm Some tools in the netpbm suite create files in an insecure manner that can lead to local privilege escalation. New packages will be available soon. - zebra Local users can send malicious netlink messages that cause denial-of-service conditions in zebra. New packages will be available soon. - quagga Local users can send malicious netlink messages that cause denial-of-service conditions in the routing-daemon quagga. New packages are available on our FTP servers. - tcpdump The code for handling ISAKMP and RADIUS messages contained bugs which allowed remote attackers to crash tcpdump or to execute arbitrary code. New packages are available on our FTP servers. - mod_python A remote denial-of-service attack can be triggered against the Apache web server by sending a specific query string that is processed by mod_python. New packages will be available soon. ______________________________________________________________________________ 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. Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security(a)suse.de> pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build(a)suse.de> - -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org mQGiBDnu9IERBACT8Y35+2vv4MGVKiLEMOl9GdST6MCkYS3yEKeueNWc+z/0Kvff 4JctBsgs47tjmiI9sl0eHjm3gTR8rItXMN6sJEUHWzDP+Y0PFPboMvKx0FXl/A0d M+HFrruCgBlWt6FA+okRySQiliuI5phwqkXefl9AhkwR8xocQSVCFxcwvwCglVcO QliHu8jwRQHxlRE0tkwQQI0D+wfQwKdvhDplxHJ5nf7U8c/yE/vdvpN6lF0tmFrK XBUX+K7u4ifrZlQvj/81M4INjtXreqDiJtr99Rs6xa0ScZqITuZC4CWxJa9GynBE D3+D2t1V/f8l0smsuYoFOF7Ib49IkTdbtwAThlZp8bEhELBeGaPdNCcmfZ66rKUd G5sRA/9ovnc1krSQF2+sqB9/o7w5/q2qiyzwOSTnkjtBUVKn4zLUOf6aeBAoV6NM CC3Kj9aZHfA+ND0ehPaVGJgjaVNFhPi4x0e7BULdvgOoAqajLfvkURHAeSsxXIoE myW/xC1sBbDkDUIBSx5oej73XCZgnj/inphRqGpsb+1nKFvF+rQoU3VTRSBQYWNr YWdlIFNpZ25pbmcgS2V5IDxidWlsZEBzdXNlLmRlPohcBBMRAgAcBQI57vSBBQkD wmcABAsKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyl8sAJ98BgD40zw0GHJHIf6d NfnwI2PAsgCgjH1+PnYEl7TFjtZsqhezX7vZvYCIRgQQEQIABgUCOnBeUgAKCRCe QOMQAAqrpNzOAKCL512FZvv4VZx94TpbA9lxyoAejACeOO1HIbActAevk5MUBhNe LZa/qM2JARUDBRA6cGBvd7LmAD0l09kBATWnB/9An5vfiUUE1VQnt+T/EYklES3t XXaJJp9pHMa4fzFa8jPVtv5UBHGee3XoUNDVwM2OgSEISZxbzdXGnqIlcT08TzBU D9i579uifklLsnr35SJDZ6ram51/CWOnnaVhUzneOA9gTPSr+/fT3WeVnwJiQCQ3 0kNLWVXWATMnsnT486eAOlT6UNBPYQLpUprF5Yryk23pQUPAgJENDEqeU6iIO9Ot 1ZPtB0lniw+/xCi13D360o1tZDYOp0hHHJN3D3EN8C1yPqZd5CvvznYvB6bWBIpW cRgdn2DUVMmpU661jwqGlRz1F84JG/xe4jGuzgpJt9IXSzyohEJB6XG5+D0BiF0E ExECAB0FAjxqqTQFCQoAgrMFCwcKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyp1f AJ9dR7saz2KPNwD3U+fy/0BDKXrYGACfbJ8fQcJqCBQxeHvt9yMPDVq0B0W5Ag0E Oe70khAIAISR0E3ozF/la+oNaRwxHLrCet30NgnxRROYhPaJB/Tu1FQokn2/Qld/ HZnh3TwhBIw1FqrhWBJ7491iAjLR9uPbdWJrn+A7t8kSkPaF3Z/6kyc5a8fas44h t5h+6HMBzoFCMAq2aBHQRFRNp9Mz1ZvoXXcI1lk1l8OqcUM/ovXbDfPcXsUVeTPT tGzcAi2jVl9hl3iwJKkyv/RLmcusdsi8YunbvWGFAF5GaagYQo7YlF6UaBQnYJTM 523AMgpPQtsKm9o/w9WdgXkgWhgkhZEeqUS3m5xNey1nLu9iMvq9M/iXnGz4sg6Q 2Y+GqZ+yAvNWjRRou3zSE7Bzg28MI4sAAwYH/2D71Xc5HPDgu87WnBFgmp8MpSr8 QnSs0wwPg3xEullGEocolSb2c0ctuSyeVnCttJMzkukL9TqyF4s/6XRstWirSWaw JxRLKH6Zjo/FaKsshYKf8gBkAaddvpl3pO0gmUYbqmpQ3xDEYlhCeieXS5MkockQ 1sj2xYdB1xO0ExzfiCiscUKjUFy+mdzUsUutafuZ+gbHog1CN/ccZCkxcBa5IFCH ORrNjq9pYWlrxsEn6ApsG7JJbM2besW1PkdEoxak74z1senh36m5jQvVjA3U4xq1 wwylxadmmJaJHzeiLfb7G1ZRjZTsB7fyYxqDzMVul6o9BSwO/1XsIAnV1uuITAQY EQIADAUCOe70kgUJA8JnAAAKCRCoTtronIAKyksiAJsFB3/77SkH3JlYOGrEe1Ol 0JdGwACeKTttgeVPFB+iGJdiwQlxasOfuXyITAQYEQIADAUCPGqpWQUJCgCCxwAK CRCoTtronIAKyofBAKCSZM2UFyta/fe9WgITK9I5hbxxtQCfX+0ar2CZmSknn3co SPihn1+OBNyZAQ0DNuEtBAAAAQgAoCRcd7SVZEFcumffyEwfLTcXQjhKzOahzxpo omuF+HIyU4AGq+SU8sTZ/1SsjhdzzrSAfv1lETACA+3SmLr5KV40Us1w0UC64cwt A46xowVq1vMlH2Lib+V/qr3b1hE67nMHjysECVx9Ob4gFuKNoR2eqnAaJvjnAT8J /LoUC20EdCHUqn6v+M9t/WZgC+WNR8cq69uDy3YQhDP/nIan6fm2uf2kSV9A7ZxE GrwsWl/WX5Q/sQqMWaU6r4az98X3z90/cN+eJJ3vwtA+rm+nxEvyev+jaLuOQBDf ebh/XA4FZ35xmi+spdiVeJH4F/ubaGlmj7+wDOF3suYAPSXT2QAFEbQlU3VTRSBT ZWN1cml0eSBUZWFtIDxzZWN1cml0eUBzdXNlLmRlPokBFQMFEDbhLUfkWLKHsco8 RQEBVw4H/1vIdiOLX/7hdzYaG9crQVIk3QwaB5eBbjvLEMvuCZHiY2COUg5QdmPQ 8SlWNZ6k4nu1BLcv2g/pymPUWP9fG4tuSnlUJDrWGm3nhyhAC9iudP2u1YQY37Gb B6NPVaZiYMnEb4QYFcqv5c/r2ghSXUTYk7etd6SW6WCOpEqizhx1cqDKNZnsI/1X 11pFcO2N7rc6byDBJ1T+cK+F1Ehan9XBt/shryJmv04nli5CXQMEbiqYYMOu8iaA 8AWRgXPCWqhyGhcVD3LRhUJXjUOdH4ZiHCXaoF3zVPxpeGKEQY8iBrDeDyB3wHmj qY9WCX6cmogGQRgYG6yJqDalLqrDOdmJARUDBRA24S0Ed7LmAD0l09kBAW04B/4p WH3f1vQn3i6/+SmDjGzUu2GWGq6Fsdwo2hVM2ym6CILeow/K9JfhdwGvY8LRxWRL hn09j2IJ9P7H1Yz3qDf10AX6V7YILHtchKT1dcngCkTLmDgC4rs1iAAl3f089sRG BafGPGKv2DQjHfR1LfRtbf0P7c09Tkej1MP8HtQMW9hPkBYeXcwbCjdrVGFOzqx+ AvvJDdT6a+oyRMTFlvmZ83UV5pgoyimgjhWnM1V4bFBYjPrtWMkdXJSUXbR6Q7Pi RZWCzGRzwbaxqpl3rK/YTCphOLwEMB27B4/fcqtBzgoMOiaZA0M5fFoo54KgRIh0 zinsSx2OrWgvSiLEXXYKiEYEEBECAAYFAjseYcMACgkQnkDjEAAKq6ROVACgjhDM /3KM+iFjs5QXsnd4oFPOnbkAnjYGa1J3em+bmV2aiCdYXdOuGn4ZiQCVAwUQN7c7 whaQN/7O/JIVAQEB+QP/cYblSAmPXxSFiaHWB+MiUNw8B6ozBLK0QcMQ2YcL6+Vl D+nSZP20+Ja2nfiKjnibCv5ss83yXoHkYk2Rsa8foz6Y7tHwuPiccvqnIC/c9Cvz dbIsdxpfsi0qWPfvX/jLMpXqqnPjdIZErgxpwujas1n9016PuXA8K3MJwVjCqSKI RgQQEQIABgUCOhpCpAAKCRDHUqoysN/3gCt7AJ9adNQMbmA1iSYcbhtgvx9ByLPI DgCfZ5Wj+f7cnYpFZI6GkAyyczG09sE= =LRKC - -----END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iQEVAwUBQBj9FXey5gA9JdPZAQEzpwf+NgFmU++b3VxVKAFbGEax/N5iTUCLqvzh L7pnVkGflFDsjhscQJOz0cr1fBpo51MuSK8KCmw2JZv9eeJsUs7MGfV5CICmdJk6 1MOaC8OMhHEk8JNYS9dViWBJUJUiHEwLFjLI81Ad3KIrOe982mhzZ/1RSCZJW+Yd ipfs8Z1l9e0bOIjH3Uod2/sm11KfxUaUv8kPSQlVzS1yClZ9j1dpI8wRtdUZzlWo /ZJzM1rduLWGEFNDvC+g+IkBTPytFkYOrUgiYE7DOovdwGYzWCwotT6x5DokDdyU P+zerCPGxJUe1H/u9Y0gv4VOxQD+rE6Ur6ChDJ4JSjw6uicjnWRYVA== =iAfN -----END PGP SIGNATURE----- Bye, Thomas -- Thomas Biege <thomas(a)suse.de>, SUSE LINUX AG, Security Support & Auditing

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SUSE Security Announcement: Linux Kernel (SuSE-SA:2004:003)
by Thomas Biege 15 Jan '04

15 Jan '04

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: Linux Kernel (x86_64, AMD64) Announcement-ID: SuSE-SA:2004:003 Date: Monday, Jan 15th 2004 14:17 MET Affected products: 9.0 SuSE Linux Enterprise Server 8, Vulnerability Type: local system compromise Severity (1-10): 6 SUSE default package: yes Cross References: Content of this advisory: 1) security vulnerability resolved: - incorrect bounds checking in mremap() - inproper CPU register access check in 32bit ptrace() problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - ethereal - mc - mod_gzip - tripwire - cvs - gnome-filesystem - XDM (XFree86, xf86) - 3ddiag - mod_auth_shadow 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information The do_mremap() function of the Linux Kernel is used to manage (move, resize) Virtual Memory Areas (VMAs). By exploiting an incorrect bounds check in do_mremap() during the remapping of memory it is possible to create a VMA with the size of 0. In normal operation do_mremap() leaves a memory hole of one page and creates an additional VMA of two pages. In case of exploitation no hole is created but the new VMA has a 0 bytes length. The Linux Kernel's memory management is corrupted from this point and can be abused by local users to gain root privileges. Additionally Andi Kleen of SUSE LINUX found and fixed another bug in the 32bit emulation of ptrace() which allows to modify CPU registers from user-space to get full access to system ressources. There is no temporary workaround for this bug. Please reboot your system to run the new kernel. AMD64 Platform: SuSE-9.0: ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_deflt-2.4.21-178… 4896825f6399bebc80073dbbd74432cd source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_deflt-2.4.21-178.sr… e9afc5cbb5fc1dddb53e179a52d45f0a ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_smp-2.4.21-178.x… 8b7667ac6baf4aebd4961274cbdaa84e source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_smp-2.4.21-178.src.… ffc25e3c1b9a4ed4e5182ff5cbdd5c18 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/kernel-source-2.4.… 9422ec31eb76d26a1dfaca8fb8542907 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/kernel-source-2.4.21-… 8acc26621600cc7411f964656c435389 ______________________________________________________________________________ 2) Pending vulnerabilities in SUSE Distributions and Workarounds: - ethereal Two remotely exploitable denial-of-service attacks were found in the network analyzer ethereal. New packages are available on our FTP servers. - mc By using a special combination of links in archive-files it is possible to execute arbitrary commands while mc tries to open it in its VFS. The packages will be released soon. - mod_gzip (apache-contrib) The apache module mod_gzip is vulnerable to remote code execution while running in debug-mode. We do not ship this module in debug-mode but future versions will include the fix. Additionally the mod_gzip code was audited to fix more possible security related bugs. After more testing a new apache-contrib RPM package will be released. - tripwire Tripwire is a file integrity checker. The tripwire version on SuSE Linux 8.2 and 9.0 do crash when a requested file does not exists. New packages will be available soon. - cvs The cvs server-side can be tricked to create files in the root filesystem of the server by requesting malformed modules. The permissions on the root filesystem normally prevent this malfunction. Additionally the package will include a fix for a format-string bug. New packages are available on our FTP servers. - gnome-filesystem A script included in the gnome-filesystem package handles temporary files insecurely. This script is called by YaST2 with root privileges. The bug can be exploited locally to create or overwrite arbitrary files in the filesystem. The bug is fixed in our current source-tree since November 2003. New packages are available on our FTP servers. - XDM (XFree86, xf86) A missing check for failure conditions in the PAM code of XDM can lead to local root access in conjunction with Kerberos and alike. New packages will be released soon. - 3ddiag Some 3ddiag scripts handle temporary files in an insecure manner. Thanks to Stefan Nordhausen <nordhaus at informatik.hu-berlin.de> for reporting some of the issues. New packages will be available on our FTP servers soon. - mod_auth_shadow (apache-contrib) This apache module ignores account expiration dates. The update will be released together with mod_gzip. ______________________________________________________________________________ 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. Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security(a)suse.de> pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build(a)suse.de> - -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org mQGiBDnu9IERBACT8Y35+2vv4MGVKiLEMOl9GdST6MCkYS3yEKeueNWc+z/0Kvff 4JctBsgs47tjmiI9sl0eHjm3gTR8rItXMN6sJEUHWzDP+Y0PFPboMvKx0FXl/A0d M+HFrruCgBlWt6FA+okRySQiliuI5phwqkXefl9AhkwR8xocQSVCFxcwvwCglVcO QliHu8jwRQHxlRE0tkwQQI0D+wfQwKdvhDplxHJ5nf7U8c/yE/vdvpN6lF0tmFrK XBUX+K7u4ifrZlQvj/81M4INjtXreqDiJtr99Rs6xa0ScZqITuZC4CWxJa9GynBE D3+D2t1V/f8l0smsuYoFOF7Ib49IkTdbtwAThlZp8bEhELBeGaPdNCcmfZ66rKUd G5sRA/9ovnc1krSQF2+sqB9/o7w5/q2qiyzwOSTnkjtBUVKn4zLUOf6aeBAoV6NM CC3Kj9aZHfA+ND0ehPaVGJgjaVNFhPi4x0e7BULdvgOoAqajLfvkURHAeSsxXIoE myW/xC1sBbDkDUIBSx5oej73XCZgnj/inphRqGpsb+1nKFvF+rQoU3VTRSBQYWNr YWdlIFNpZ25pbmcgS2V5IDxidWlsZEBzdXNlLmRlPohcBBMRAgAcBQI57vSBBQkD wmcABAsKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyl8sAJ98BgD40zw0GHJHIf6d NfnwI2PAsgCgjH1+PnYEl7TFjtZsqhezX7vZvYCIRgQQEQIABgUCOnBeUgAKCRCe QOMQAAqrpNzOAKCL512FZvv4VZx94TpbA9lxyoAejACeOO1HIbActAevk5MUBhNe LZa/qM2JARUDBRA6cGBvd7LmAD0l09kBATWnB/9An5vfiUUE1VQnt+T/EYklES3t XXaJJp9pHMa4fzFa8jPVtv5UBHGee3XoUNDVwM2OgSEISZxbzdXGnqIlcT08TzBU D9i579uifklLsnr35SJDZ6ram51/CWOnnaVhUzneOA9gTPSr+/fT3WeVnwJiQCQ3 0kNLWVXWATMnsnT486eAOlT6UNBPYQLpUprF5Yryk23pQUPAgJENDEqeU6iIO9Ot 1ZPtB0lniw+/xCi13D360o1tZDYOp0hHHJN3D3EN8C1yPqZd5CvvznYvB6bWBIpW cRgdn2DUVMmpU661jwqGlRz1F84JG/xe4jGuzgpJt9IXSzyohEJB6XG5+D0BiF0E ExECAB0FAjxqqTQFCQoAgrMFCwcKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyp1f AJ9dR7saz2KPNwD3U+fy/0BDKXrYGACfbJ8fQcJqCBQxeHvt9yMPDVq0B0W5Ag0E Oe70khAIAISR0E3ozF/la+oNaRwxHLrCet30NgnxRROYhPaJB/Tu1FQokn2/Qld/ HZnh3TwhBIw1FqrhWBJ7491iAjLR9uPbdWJrn+A7t8kSkPaF3Z/6kyc5a8fas44h t5h+6HMBzoFCMAq2aBHQRFRNp9Mz1ZvoXXcI1lk1l8OqcUM/ovXbDfPcXsUVeTPT tGzcAi2jVl9hl3iwJKkyv/RLmcusdsi8YunbvWGFAF5GaagYQo7YlF6UaBQnYJTM 523AMgpPQtsKm9o/w9WdgXkgWhgkhZEeqUS3m5xNey1nLu9iMvq9M/iXnGz4sg6Q 2Y+GqZ+yAvNWjRRou3zSE7Bzg28MI4sAAwYH/2D71Xc5HPDgu87WnBFgmp8MpSr8 QnSs0wwPg3xEullGEocolSb2c0ctuSyeVnCttJMzkukL9TqyF4s/6XRstWirSWaw JxRLKH6Zjo/FaKsshYKf8gBkAaddvpl3pO0gmUYbqmpQ3xDEYlhCeieXS5MkockQ 1sj2xYdB1xO0ExzfiCiscUKjUFy+mdzUsUutafuZ+gbHog1CN/ccZCkxcBa5IFCH ORrNjq9pYWlrxsEn6ApsG7JJbM2besW1PkdEoxak74z1senh36m5jQvVjA3U4xq1 wwylxadmmJaJHzeiLfb7G1ZRjZTsB7fyYxqDzMVul6o9BSwO/1XsIAnV1uuITAQY EQIADAUCOe70kgUJA8JnAAAKCRCoTtronIAKyksiAJsFB3/77SkH3JlYOGrEe1Ol 0JdGwACeKTttgeVPFB+iGJdiwQlxasOfuXyITAQYEQIADAUCPGqpWQUJCgCCxwAK CRCoTtronIAKyofBAKCSZM2UFyta/fe9WgITK9I5hbxxtQCfX+0ar2CZmSknn3co SPihn1+OBNyZAQ0DNuEtBAAAAQgAoCRcd7SVZEFcumffyEwfLTcXQjhKzOahzxpo omuF+HIyU4AGq+SU8sTZ/1SsjhdzzrSAfv1lETACA+3SmLr5KV40Us1w0UC64cwt A46xowVq1vMlH2Lib+V/qr3b1hE67nMHjysECVx9Ob4gFuKNoR2eqnAaJvjnAT8J /LoUC20EdCHUqn6v+M9t/WZgC+WNR8cq69uDy3YQhDP/nIan6fm2uf2kSV9A7ZxE GrwsWl/WX5Q/sQqMWaU6r4az98X3z90/cN+eJJ3vwtA+rm+nxEvyev+jaLuOQBDf ebh/XA4FZ35xmi+spdiVeJH4F/ubaGlmj7+wDOF3suYAPSXT2QAFEbQlU3VTRSBT ZWN1cml0eSBUZWFtIDxzZWN1cml0eUBzdXNlLmRlPokBFQMFEDbhLUfkWLKHsco8 RQEBVw4H/1vIdiOLX/7hdzYaG9crQVIk3QwaB5eBbjvLEMvuCZHiY2COUg5QdmPQ 8SlWNZ6k4nu1BLcv2g/pymPUWP9fG4tuSnlUJDrWGm3nhyhAC9iudP2u1YQY37Gb B6NPVaZiYMnEb4QYFcqv5c/r2ghSXUTYk7etd6SW6WCOpEqizhx1cqDKNZnsI/1X 11pFcO2N7rc6byDBJ1T+cK+F1Ehan9XBt/shryJmv04nli5CXQMEbiqYYMOu8iaA 8AWRgXPCWqhyGhcVD3LRhUJXjUOdH4ZiHCXaoF3zVPxpeGKEQY8iBrDeDyB3wHmj qY9WCX6cmogGQRgYG6yJqDalLqrDOdmJARUDBRA24S0Ed7LmAD0l09kBAW04B/4p WH3f1vQn3i6/+SmDjGzUu2GWGq6Fsdwo2hVM2ym6CILeow/K9JfhdwGvY8LRxWRL hn09j2IJ9P7H1Yz3qDf10AX6V7YILHtchKT1dcngCkTLmDgC4rs1iAAl3f089sRG BafGPGKv2DQjHfR1LfRtbf0P7c09Tkej1MP8HtQMW9hPkBYeXcwbCjdrVGFOzqx+ AvvJDdT6a+oyRMTFlvmZ83UV5pgoyimgjhWnM1V4bFBYjPrtWMkdXJSUXbR6Q7Pi RZWCzGRzwbaxqpl3rK/YTCphOLwEMB27B4/fcqtBzgoMOiaZA0M5fFoo54KgRIh0 zinsSx2OrWgvSiLEXXYKiEYEEBECAAYFAjseYcMACgkQnkDjEAAKq6ROVACgjhDM /3KM+iFjs5QXsnd4oFPOnbkAnjYGa1J3em+bmV2aiCdYXdOuGn4ZiQCVAwUQN7c7 whaQN/7O/JIVAQEB+QP/cYblSAmPXxSFiaHWB+MiUNw8B6ozBLK0QcMQ2YcL6+Vl D+nSZP20+Ja2nfiKjnibCv5ss83yXoHkYk2Rsa8foz6Y7tHwuPiccvqnIC/c9Cvz dbIsdxpfsi0qWPfvX/jLMpXqqnPjdIZErgxpwujas1n9016PuXA8K3MJwVjCqSKI RgQQEQIABgUCOhpCpAAKCRDHUqoysN/3gCt7AJ9adNQMbmA1iSYcbhtgvx9ByLPI DgCfZ5Wj+f7cnYpFZI6GkAyyczG09sE= =LRKC - -----END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iQEVAwUBQAatD3ey5gA9JdPZAQGiiwgAmrtgPyWm8MnksZGe6IdhxK7eoKaLaf+J W8rAUlYc7NyCuhvxplvndWc8NhktnhRICLVYVxaRAZDqmehlNnT24k0qhImo25+J zlRbVCZDU/UpBdQ+dm4Kf55L9dGlF620ZYXu9DTkxuRmvkNt3qT+Tu7kc6mJn8yw sKRItBRfNzPgpmspV3gnmsS2WzfyJkf+PrRfOoXMcWU//FD/0oHjPjjO3HMumWep 72VUMXLxbpDVmNH2uEGv2OWBySJ3nWx+gr5iSFRsiVjFYuPqbnMll2OyrFfcOpv+ URgy1US24Y0FK5CdVj8PLD3H81Ly7kZQYb23wgO/bsMhDSkL8zmLoQ== =+QjJ -----END PGP SIGNATURE-----

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SUSE Security Announcement: tcpdump (SuSE-SA:2004:002)
by Sebastian Krahmer 14 Jan '04

14 Jan '04

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: tcpdump Announcement-ID: SuSE-SA:2004:002 Date: Wed Jan 14 14:00:00 MET 2004 Affected products: 8.0, 8.1, 8.2, 9.0 SuSE eMail Server III SuSE Firewall Adminhost VPN SuSE Linux Admin-CD for Firewall SuSE Firewall on CD 2 - VPN SuSE Firewall on CD 2 SuSE Linux Enterprise Server 7 SLES 8 for IBM iSeries and IBM pSeries SuSE Linux Enterprise Server 8 SuSE Linux Desktop 1.0 SuSE Linux School Server for i386 SuSE Linux Standard Server 8 SuSE Linux Office Server UnitedLinux 1.0 Vulnerability Type: remote DoS Severity (1-10): 3 SUSE default package: yes Cross References: http://www.tcpdump.org CAN-2003-0989 Content of this advisory: 1) security vulnerability resolved: remote DoS condition in tcpdumps ISAKMP handling problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - opera - mc - mod_gzip - tripwire - cvs - gnome-filesystem - XDM (XFree86, xf86) - inn - mpg321 - popper - kdepim3 - pin - 3ddiag - mod_auth_shadow 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information Tcpdump is a well known tool for administrators to analyze network traffic. There is a bug in the tcpdump code responsible for handling ISAKMP messages. This bug allows remote attackers to destroy a current tcpdump session by tricking the tcpdump program with evil ISAKMP messages to enter an endless loop. 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. i386 Intel Platform: SuSE-9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/tcpdump-3.7.2-72.i586.… a4395d7d819ea8918778f9a3b91c297c patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/tcpdump-3.7.2-72.i586.… 4eae84a6074af7c2386f9145a49f9477 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/tcpdump-3.7.2-72.src.rpm b32b0e08e9add34b3c42599734723454 SuSE-8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/tcpdump-3.7.1-341.i586… 39c8e448e4056111444658ce93281ca3 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/tcpdump-3.7.1-341.i586… dfcb12acdad084fcf15508361a3018b5 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/tcpdump-3.7.1-341.src.r… b92c579649acc9fb19810bcc7a670d6d SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/tcpdump-3.7.1-341.i586… 5527a4823b041894324ae65b02e40011 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/tcpdump-3.7.1-341.i586… f4c933fd520dbcab98092e5a2fe8846c source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/tcpdump-3.7.1-341.src.r… 0b118d8fe78cea0cc2405a934a77b7fd SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/n1/tcpdump-3.6.2-330.i386.rpm d77a4e84796cc96be12c97ea19d272bb patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/n1/tcpdump-3.6.2-330.i386.patch… 74882ed085cc27c938ed5529df8040c4 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/tcpdump-3.6.2-330.src.rpm 51f39911dadd7add63e07a922840314c Opteron x86_64 Platform: SuSE-9.0: ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/tcpdump-3.7.2-68.x… 0278d04abfe2bcffca8f45e711beebd0 patch rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/tcpdump-3.7.2-68.x… 348b217551a35a6e4f9698e92f3170c8 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/tcpdump-3.7.2-68.src.… 2deb0ae848d115e00593a5639ec5b6b8 ______________________________________________________________________________ 2) Pending vulnerabilities in SUSE Distributions and Workarounds: - Opera web browser The SuSE Security Team has discovered a flaw in the Opera web browsers X.509 certificate handling during the SSL handshake. It allows attackers to prompt the Opera web browser with invalid certificates containing the public key of the attacker. Thus, he can read or modify the HTTPS traffic without notification by the user. New packages fixing this problem will be available soon on our ftp servers. - mc By using a special combination of links in archive-files it is possible to execute arbitrary commands while mc tries to open it in its VFS. The packages will be released soon. - mod_gzip (apache-contrib) The apache module mod_gzip is vulnerable to remote code execution while running in debug-mode. We do not ship this module in debug-mode but future versions will include the fix. Additionally the mod_gzip code was audited to fix more possible security related bugs. After more testing a new apache-contrib RPM package will be released. - tripwire Tripwire is a file integrity checker. The tripwire version on SuSE Linux 8.2 and 9.0 do crash when a requested file does not exists. New packages will be available soon. - cvs The cvs server-side can be tricked to create files in the root filesystem of the server by requesting malformed modules. The permissions on the root filesystem normally prevent this malfunction. Additionally the package will include a fix for a format-string bug. New packages will be available soon. - gnome-filesystem A script included in the gnome-filesystem package handles temporary files insecurely. This script is called by YaST2 with root privileges. The bug can be exploited locally to create or overwrite arbitrary files in the filesystem. The bug is fixed in our current source-tree since November 2003 but nevertheless update packages for older SuSE Linux versions will be released soon. - XDM (XFree86, xf86) A missing check for failure conditions in the PAM code of XDM can lead to local root access in conjunction with Kerberos and alike. New packages will be released soon. - inn A buffer overflow in the code for handling control messages can be exploited remotely. New packages are available on our FTP servers. - mpg321 A format-bug in mpg321 can be exploited (even remotely by HTTP streaming) to execute code with the permissions of the user running mpg321 on special MP3 files. New packages are available on our FTP servers. - popper Popper handles temporary files in an insecure manner. New packages are available on our FTP servers. - kdepim3 It was possible to use a buffer overflow via a special crafted vcard file to run code during generating previews. By default it was only possible on local filesystems, but the user can enable this also for remote file systems. New packages are available on our FTP servers. - pin Pin handles local temporary files in an insecure manner which may lead to local privilege escalation. Thanks to Stefan Nordhausen <nordhaus at informatik.hu-berlin.de> for reporting one of the issues. New packages are available on our FTP servers. - 3ddiag Some 3ddiag scripts handle temporary files in an insecure manner. Thanks to Stefan Nordhausen <nordhaus at informatik.hu-berlin.de> for reporting some of the issues. New packages will be available on our FTP servers soon. - mod_auth_shadow (apache-contrib) This apache module ignores account expiration dates. The update will be released together with mod_gzip. ______________________________________________________________________________ 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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1 0

SUSE Security Announcement: Linux Kernel (SuSE-SA:2004:001)
by Thomas Biege 05 Jan '04

05 Jan '04

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SUSE Security Announcement Package: Linux Kernel Announcement-ID: SuSE-SA:2004:001 Date: Monday, Jan 5th 2004 20:27 MET Affected products: 8.0, 8.1, 8.2, 9.0 SuSE Linux Enterprise Server 7, SuSE Linux Database Server, SuSE eMail Server III, 3.1 SuSE Linux Firewall on CD/Admin host SuSE Linux Office Server SuSE Linux Desktop 1.0 SuSE Linux School Server Vulnerability Type: local system compromise Severity (1-10): 6 SUSE default package: yes Cross References: Content of this advisory: 1) security vulnerability resolved: - incorrect bounds checking problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - mc - mod_gzip - tripwire - cvs - irssi - atftp 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information The do_mremap() function of the Linux Kernel is used to manage (move, resize) Virtual Memory Areas (VMAs). By exploiting an incorrect bounds check in do_mremap() during the remapping of memory it is possible to create a VMA with the size of 0. In normal operation do_mremap() leaves a memory hole of one page and creates an additional VMA of two pages. In case of exploitation no hole is created but the new VMA has a 0 bytes length. The Linux Kernel's memory management is corrupted from this point and can be abused by local users to gain root privileges. There is no temporary workaround for this bug. Please note that on 8.1, the kernel-source package may not be installable through rpm, because of a bug in RPM (update of the kernel source RPM may take 30 minutes or more, or fail entirely). Owing to this problem, the kernel source is not available as a regular YOU update. However, recognizing our obligation to publish the source along with the binary packages, we are making the source available as a compressed tar archive, downloadable from the normal FTP locations SPECIAL INSTALL INSTRUCTIONS: ============================== The following paragraphs will guide you through the installation process in a step-by-step fashion. The character sequence "****" marks the beginning of a new paragraph. In some cases, you decide if the paragraph is needed for you or not. Please read through all of the steps down to the end. All of the commands that need to be executed are required to be run as the superuser (root). Each step relies on the steps before to complete successfully. **** Step 1: Determine the needed kernel type Please use the following command to find the kernel type that is installed on your system: rpm -qf /boot/vmlinuz The following options are possible (disregarding the version and build number following the name, separated by the "-" character): k_deflt # default kernel, good for most systems. k_i386 # kernel for older processors and chipsets k_athlon # kernel made specifically for AMD Athlon(tm) family processors k_psmp # kernel for Pentium-I dual processor systems k_smp # kernel for SMP systems (Pentium-II and above) k_smp4G # kernel for SMP systems which supports a maximum of 4G of RAM **** Step 2: Download the package for your system Please download the kernel RPM package for your distribution with the name starting as indicated by Step 1. The list of all kernel rpm packages is appended below. Note: The kernel-source package does not contain any binary kernel in bootable form. Instead, it contains the sources that the binary kernel rpm packages are made from. It can be used by administrators who have decided to build their own kernel. Since the kernel-source.rpm is an installable (compiled) package that contains sources for the linux kernel, it is not the source RPM for the kernel RPM binary packages. The kernel RPM binary packages for the distributions can be found at these locations below ftp://ftp.suse.com/pub/suse/i386/update/. 8.0/images/ 8.1/rpm/i586 8.2/rpm/i586 9.0/rpm/i586 After downloading the kernel RPM package for your system, you should verify the authenticity of the kernel rpm package using the methods as listed in section 3) of each SUSE Security Announcement. **** Step 3: Installing your kernel rpm package Install the rpm package that you have downloaded in Steps 3 or 4 with the command rpm -Uhv --nodeps --force <K_FILE.RPM> where <K_FILE.RPM> is the name of the rpm package that you downloaded. Warning: After performing this step, your system will likely not be able to boot if the following steps have not been fully applied. If you run SUSE LINUX 8.1 and haven't applied the previous kernel update (SUSE-SA:2003:034), AND use the freeswan package, you also need to update the freeswan rpm as a dependency as offered by YOU (Yast Online Update). The package can be downloaded from ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/ **** Step 4: configuring and creating the initrd The initrd is a ramdisk that is being loaded into the memory of your system together with the kernel boot image by the bootloader. The kernel uses the content of this ramdisk to execute commands that must be run before the kernel can mount its actual root filesystem. It is usually used to initialize scsi drivers or NIC drivers for diskless operation. The variable INITRD_MODULES in /etc/sysconfig/kernel determines which kernel modules will be loaded in the initrd before the kernel has mounted its actual root filesystem. The variable should contain your scsi adapter (if any) or filesystem driver modules. With the installation of the new kernel, the initrd has to be re-packed with the update kernel modules. Please run the command mk_initrd as root to create a new init ramdisk (initrd) for your system. On SuSE Linux 8.1 and later, this is done automatically when the RPM is installed. **** Step 5: bootloader If you have a 7.x system, you must now run the command lilo as root to initialize the lilo bootloader for your system. Then proceed to the next step. If you run a SUSE LINUX 8.x or a SLES8 system, there are two options: Depending on your software configuration, you have the lilo bootloader or the grub bootloader installed and initialized on your system. The grub bootloader does not require any further actions to be performed after the new kernel images have been moved in place by the rpm Update command. If you have a lilo bootloader installed and initialized, then the lilo program must be run as root. Use the command grep LOADER_TYPE /etc/sysconfig/bootloader to find out which boot loader is configured. If it is lilo, then you must run the lilo command as root. If grub is listed, then your system does not require any bootloader initialization. Warning: An improperly installed bootloader may render your system unbootable. **** Step 6: reboot If all of the steps above have been successfully applied to your system, then the new kernel including the kernel modules and the initrd should be ready to boot. The system needs to be rebooted for the changes to become active. Please make sure that all steps are complete, then reboot using the command shutdown -r now or init 6 Your system should now shut down and reboot with the new kernel. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. 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. Missing packages will be published later. Intel i386 Platform: SuSE-9.0: ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_athlon-2.4.21-166.i5… 0bbda4a9166edcdd4444fa43a5b37f10 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_athlon-2.4.21-166.src… 3cce21862c2d54a82742c74557dcc7fa ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_deflt-2.4.21-166.i58… 6df247b9f114e8636de2c673747ef6ea source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_deflt-2.4.21-166.src.… c06a81d1e7912db429df25e8e8d754b7 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_smp-2.4.21-166.i586.… 0da9470eb573ecb5c801bedbd5dbf666 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_smp-2.4.21-166.src.rpm 34393ea6b46a8b8859d51020e1dc275e ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_smp4G-2.4.21-166.i58… 0b0d23a4a6918e57a1e7c45504a50df7 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_smp4G-2.4.21-166.src.… 26cadc4c9d77dc6e433bedc458166236 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/k_um-2.4.21-166.i586.r… 7e18d9b0b89ef72bee40bbf150dd0470 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/k_um-2.4.21-166.src.rpm ad8c357792c0d34570c9ba54a579d867 ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/kernel-source-2.4.21-1… 48b46c943cc15aacfba0ec68090de1f6 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/kernel-source-2.4.21-16… ef71c55f61b595edc24be7c318237432 SuSE-8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_athlon-2.4.20-102.i5… 61de636fab3149ee5d45d16dccf8d0e8 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_athlon-2.4.20-102.src… 80b8f44b6f8f4d039b8954c709b457b0 ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_deflt-2.4.20-102.i58… c25b57bc5d67d87177abf7953f022331 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_deflt-2.4.20-102.src.… 29d014e79a3ee0b14a23cb0e4bdd0f0e ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_smp-2.4.20-102.i586.… d42041b08cdee2d9959a4a6dad8b6e9d source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_smp-2.4.20-102.src.rpm 22e598ebf546cd9378c852042b602f2f ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/k_psmp-2.4.20-102.i586… c2e0455b45eac55c97e13322ab40e4bc source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/k_psmp-2.4.20-102.src.r… 68b2d35ae0de009ac3fbc6ee9a0bb3fd ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/kernel-source-2.4.20.S… 0f539af39523fd27232289014db36202 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/kernel-source-2.4.20.Su… 14c238bbbd7758abc2b4113a7297f2b5 SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_athlon-2.4.21-168.i5… 8299b1153d3d9d81236e4e77f3ae66e2 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_athlon-2.4.21-168.src… 0705e6bb739aaec77bc9801760e60051 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_deflt-2.4.21-168.i58… fea1ffe95acdbc5c00d3272b3867bd39 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_deflt-2.4.21-168.src.… aeff9339c71c275fd3c7e9ebcf49cc4f ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_smp-2.4.21-168.i586.… f4e41bdd0806673d82dc0971e36da0e1 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_smp-2.4.21-168.src.rpm f352afbf4c6d679fd4bf40347bd7989c ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_debug-2.4.21-168.i58… 81e9a2516e7b9a8d0234f2d6ee9e4444 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_debug-2.4.21-168.src.… 8b6c8e51c93c9dcbf5d34587de722a4a ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/k_psmp-2.4.21-168.i586… 9961f14d44c40a83be800ad463e17e51 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/k_psmp-2.4.21-168.src.r… f3caa2e715d24a2987408e29e0623737 SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_deflt-2.4.18-282.i386.… 62ae55de1c6abbe821b99165cbccdce7 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_deflt-2.4.18-282.src.rpm c65eadb1dd7225463f7a29979ab43dd8 ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_smp-2.4.18-282.i386.rpm 7fdec3995171a6d88f293c10c41e6991 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_smp-2.4.18-282.src.rpm 08a2cba4382f4bb8adfc5cb8f80677d1 ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_psmp-2.4.18-282.i386.r… 955386318df968aac6c66b6071eb466a source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_psmp-2.4.18-282.src.rpm fe87f59c3e818fbb9eedcb211f9d0bf4 ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/kernel-source-2.4.18.SuSE-28… 249a3cd1dcc1edaabf00d72874ba4aa2 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/kernel-source-2.4.18.SuSE-2… 7e5cbc3af87fdedbd8b6dc829e038d63 ftp://ftp.suse.com/pub/suse/i386/update/8.0/images/k_i386-2.4.18-282.i386.r… bd80346beef2e459009584065fccc7eb source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/k_i386-2.4.18-282.src.rpm ce704a3481d8b84f9fdd0b83784e74a6 Opteron x86_64 Platform: SuSE-9.0: ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_deflt-2.4.21-171… 3dd54a4105bad6c4f3084e70aaa45410 source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_deflt-2.4.21-171.sr… d88ca0142409a98a7e4e9f4f7b2e9bf8 ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/k_smp-2.4.21-171.x… b97e9d91ef710b0b801536294d99ba1a source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/k_smp-2.4.21-171.src.… 6221b0f5893499f5926c9dd529fceb5c ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/kernel-source-2.4.… 1a27668dff4ae3c405f18399432a326e source rpm(s): ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/kernel-source-2.4.21-… 301e1d8ac232d3a000f373a928deee5f ______________________________________________________________________________ 2) Pending vulnerabilities in SUSE Distributions and Workarounds: - mc By using a special combination of links in archive-files it is possible to execute arbitrary commands while mc tries to open it in its VFS. The packages will be release as soon. - mod_gzip The apache module mod_gzip is vulnerable to remote code execution while running in debug-mode. We do not ship this module in debug-mode but future versions will include the fix. Additionally the mod_gzip code was audited to fix more possible security related bugs. - tripwire Tripwire is a file integrity checker. The tripwire version on SuSE Linux 8.2 and 9.0 do crash when a requested file does not exists. New packages will be available soon. - cvs The cvs server-side can be tricked to create files in the root filesystem of the server by requesting malformed modules. The permissions on the root filesystem normally prevent this malfunction. New packages will be available soon. - irssi Under special circumstances the the irc-client irssi can be crashed remotely by other irc-clients. New packages are available on our FTP servers. - atftp A buffer overflow vulnerability discovered by Rick Patel has been fixed in the atftpd (trivial file transfer protocol, UDP oriented) daemon, contained in the atftp package. Update packages for the affected SUSE Linux distributions 8.1 and 8.2 have been published on our ftp server today. We explicitly thank Dirk Mueller, KDE developer, for notifying SUSE Security about the pending treatment of this incident. New packages are available on our FTP servers. ______________________________________________________________________________ 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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-----END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iQEVAwUBP/m68Xey5gA9JdPZAQGZRAf/fLimM8z4Cw2pAJM1hev5vLJeEoLeztzm PmSjf1n4XqybiMeJf2u+40i4GwDkYdHk5kcL7Hr/1bt1t2IKD6XCY7rYGeXLcXRv E2+AAwvdYO+U7qvSGkyxDU+ukNAESR1FV9kVftaPm7PcML99cWHrIJnboKtVhMD6 CNV3TeGpoRTzjZMpL4E34wPj28LpVzqbH7dX2wDPRVzggkWrV2+hnE3UA4q9tO5D yvtBLzhQXR9dChb9oLKKZdABpDdeWThdftsgHgPz5Q+Ct5fPUheUqos0Xplgx6te LU/RZcLX9YDLe8HdJ1FiHvHHMFRQsatwTXcvHUSNbUC6b6PwD2nTaA== =xrmT -----END PGP SIGNATURE----- Bye, Thomas -- Thomas Biege <thomas(a)suse.de>, SUSE LINUX AG, Security Support & Auditing -- # If you have the "driftnet" program installed, webcollage can display a # collage of images sniffed off your local ethernet, instead of pulled out # of search engines: in that way, your screensaver can display the images # that your co-workers are downloading! -- xscreensaver source-code

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