September 2003 - openSUSE Security - openSUSE Mailing Lists

sendmail patch is there... did i miss the announcement?
by Andreas Bittner 20 Sep '03

20 Sep '03

http://ftp.gwdg.de/pub/linux/suse/ftp.suse.com/suse/i386/update/8.0/patches… no news on the mailinglist nor the website

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SuSE Security Announcement: openssh (second release) (SuSE-SA:2003:039)
by Roman Drahtmueller 19 Sep '03

19 Sep '03

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: openssh (second release) Announcement-ID: SuSE-SA:2003:039 Date: Thursday, Sep 18 2003 20:00 MEST Affected products: 7.2, 7.3, 8.0, 8.1, 8.2 SuSE Linux Database Server, SuSE eMail Server III, 3.1 SuSE Linux Enterprise Server 7, 8 SuSE Linux Firewall on CD/Admin host SuSE Linux Connectivity Server SuSE Linux Office Server SuSE Linux Standard Server 8 Vulnerability Type: potential remote privilege escalation Severity (1-10): 8 SuSE default package: yes Cross References: http://www.openssh.com/txt/buffer.adv CERTVU#333628 http://www.kb.cert.org/vuls/id/333628 CVE CAN-2003-0693 CVE CAN-2003-0695 CVE CAN-2003-0682 Content of this advisory: 1) security vulnerability resolved: openssh problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - mysql 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information The openssh package is the most widely used implementation of the secure shell protocol family (ssh). It provides a set of network connectivity tools for remote (shell) login, designed to substitute the traditional BSD-style r-protocols (rsh, rlogin). openssh has various authentification mechanisms and many other features such as TCP connection and X11 display forwarding over the fully encrypted network connection as well as file transfer facilities. This is a new release of SuSE Security Announcement (openssh), ID SuSE-SA:2003:038. A set of new bugs were addressed by the openssh development team. These bugs are fixed in the new 3.7.1 upstream release of the openssh package; we have added the necessary changes to our packages preserving the package version to avoid the risk of incompatible behaviour of the software. Specifics about the errors found: (Topic for SuSE Security Announcement SuSE-SA:2003:038:) A programming error has been found in code responsible for buffer management. If exploited by a (remote) attacker, the error may lead to unauthorized access to the system, allowing the execution of arbitrary commands. The error is known as the buffer_append_space()-bug and is assigned the Common Vulnerabilities and Exposures (CVE) name CAN-2003-0693. The error was cause for the upstream release openssh-3.7. (Topic for SuSE Security Announcement SuSE-SA:2003:039 (this announcement):) Programming errors of a similar kind as described above have been found in other portions of the code, with similar effects. These errors are known as "buffer.c/channels.c bug", the CVE name for these errors is CAN-2003-0695. This set of errors was cause for the upstream release openssh-3.7.1. In addition to the fixes for the buffer.c/channels.c bugs we have added some changes that have been assembled by Solar Designer during his review of the source code. These fixes are considered a precautious measure and are not believed to have a significant effect on the security of the openssh code. At the time of writing this announcement, we believe that at least one set of errors as described above is exploitable by a remote attacker. As a reminder, at the time of writing the SuSE Security Announcement SuSE-SA:2003:038 it was unclear if the bug addressed with the announcement (buffer_append_space()-bug) is exploitable. An increasing amount of TCP connection attempts to port 22 as observed in the internet during the past days may indicate that there exists an exploit for the error in the public. Please note that we have disabled the Privilege Separation feature in the ssh daemon (sshd) with this update. The PrivSep feature is designed to have parts of the ssh daemon's work running under lowered privileges, thereby limiting the effect of a possible vulnerability in the code. The PrivSep feature is turned on/off by the UsePrivilegeSeparation keyword in sshd's configuration file /etc/ssh/sshd_config. The feature is held responsible for malfunctions in PAM (Pluggable Authentification Modules). The update mechanism will not overwrite configuration files that have been altered after the package installation. SPECIAL INSTALL INSTRUCTIONS: ============================== After the update has been successfully applied, the ssh daemon (sshd) must be restarted for update package to become effective. To restart the ssh daemon after the update, please run the following command as root: rcsshd restart Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. Intel i386 Platform: SuSE-8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/openssh-3.5p1-107.i586… e030b0803481d0f29f576e3b4726284f patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/openssh-3.5p1-107.i586… d022894363b99e6bd03e9b2109c2244c source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/openssh-3.5p1-107.src.r… 3f7f5ed43c7d795c63fe06148874944a SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssh-3.4p1-215.i586… 91cdd33a4149756b8f6371aa3177a5f4 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssh-3.4p1-215.i586… 3b7c44819c8fed5e33514481d99d4ab7 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/openssh-3.4p1-215.src.r… 6c3694fc75bcf185035547b85abbc491 SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/openssh-3.4p1-215.i386.rpm c61781b97767188cc3a39795535307ff patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/openssh-3.4p1-215.i386.pat… c222aef79a8fef6d44d8d61fc075efc5 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/openssh-3.4p1-215.src.rpm bc327a4150058c9d1216cb96712973a5 SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/sec1/openssh-2.9.9p2-156.i386.r… c9928c04b03cb292aa96ad6890a5ee38 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/openssh-2.9.9p2-156.src.rpm 28aa82be9233e3ba93b94eb138c9ea04 SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec1/openssh-2.9.9p2-156.i386.r… b369724a788a2c6bd70a448a49530f69 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/openssh-2.9.9p2-156.src.rpm 98b8b7281fe04aab8c8838adcf195697 Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/sec1/openssh-2.9.9p2-53.sparc.… 97cb0218e9354b8cc062e44a0d6fb19f source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/openssh-2.9.9p2-53.src.rpm 8cddb96e633864469d7ba08d3cf7436a PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec1/openssh-2.9.9p2-109.ppc.rpm 37b1e82a3971f5c4c427ce37227b11e0 source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/openssh-2.9.9p2-109.src.rpm 7a19424887772b86d14bacbf5add9628 ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - A buffer overflow vulnerability has been found in the mysql package, an Open Source relational database system. The error may allow a remote attacker to execute arbitrary code with the privileges of the database process. We are in the process of building and testing the update packages and will release them with a SuSE Security Announcement as soon as possible. ______________________________________________________________________________ 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----- Roman Drahtmüller, SuSE Security. - -- - - | Roman Drahtmüller <draht(a)suse.de> // "You don't need eyes to see, | SuSE Linux AG - Security Phone: // you need vision!" | Nürnberg, Germany +49-911-740530 // Maxi Jazz, Faithless | - - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iQEVAwUBP2n2qXey5gA9JdPZAQHLjAgAkiNLQzgEp8lIZVsbFdL66oMhogQjJaF6 kd9X1BQmx7Ad9ANs87ur68jZ3an0sIxTi63KkSiE83GsX69tubmQTn6myA11b95T AfjXAaZxCPaQF7AZzR9M8cX9aKDNkybyyszkcXXG5DjlrkHZTSLH7UcBsTMdOo+o 5i4iIVNeQorKE/PEiRIA0xv2yJjbhzZ5bRQ1GdTetfo5ffaOKgMhuDBA5szGkHtQ MgLdZpwCOTptDChZZV4mWsN6GuGELhE5GvzeyUGnAWYAp/KUN3w7QJOx3u0T5X5x 9Wsc9UThtkSdHYtDAngEtL+bcJLXAm79Rt8e1OoBhscqu6xpJNpKag== =/e0m -----END PGP SIGNATURE-----

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Re: [suse-security] SuSE Security Announcement: openssh (SuSE-SA:2003:038) 7.3/8.0 ??
by Brad Sims 19 Sep '03

19 Sep '03

Question, I have the patch and it is working correctly (SuSE 7.3), however I would like to know for further reference; what flags I should pass to the source tarball in order to build it correctly.... I have these flags at the moment... did I leave anything out? bsims@c933657-a:~/openssh-3.7p1> ./configure --prefix=/usr --with-pam --sysconfdir=/etc/ssh -- The only kind of freedom that the mob can imagine is freedom to annoy and oppress its betters, and that is precisely the kind that we mainly have. --H.L. Mencken

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RE: [suse-security] SuSE Security Announcement: openssh (second release) (SuSE-SA:2003:039)
by Michael Ryan 19 Sep '03

19 Sep '03

If rpm -qa | grep ssh reports openssh-3.4p1-215 then you are Ok as long as you used 'rcsshd restart' to start the new ssh daemon Michael -----Original Message----- From: claus [mailto:ch@greenmail.ch] Sent: Friday, September 19, 2003 11:03 AM To: suse-security(a)suse.com Cc: Roman Drahtmueller Subject: Re: [suse-security] SuSE Security Announcement: openssh (second release) (SuSE-SA:2003:039) Roman Drahtmueller wrote: > There is some oddity there if you have once updated to 3.4p1, when we > offered a downgrade to 2.9.9p2. We'll dig into that. I am on SuSE 8.0 and I got SSH Version # ssh -V OpenSSH_3.4p1, SSH protocols 1.5/2.0, OpenSSL 0x0090603f Is this safe or do I need to downgrade something? Thanx, Claus -- Check the headers for your unsubscription address For additional commands, e-mail: suse-security-help(a)suse.com Security-related bug reports go to security(a)suse.de, not here

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sendmail
by Roman Drahtmueller 19 Sep '03

19 Sep '03

Hi, before more people ask...:Yes, we are working on sendmail with as much pressure as on openssh. Publication of patches is planned today, after we're sure that you don't nuke your mailservers with them. Stay tuned. Thanks, Roman. -- - - | Roman Drahtmüller <draht(a)suse.de> // Nail here | SuSE Linux AG - Security Phone: // for a new | Nürnberg, Germany +49-911-740530 // monitor! --> [x] | - -

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openssh-3.4p1-214 on 8.1
by Jason Joines 18 Sep '03

18 Sep '03

After installing this update on an 8.1 box I get this error on restart: "# rcsshd restart shell-init: could not get current directory: getcwd: cannot access parent directories: No such file or directory shell-init: could not get current directory: getcwd: cannot access parent directories: No such file or directory Shutting down SSH daemon done shell-init: could not get current directory: getcwd: cannot access parent directories: No such file or directory Starting SSH daemon done" Any ideas what's going on with it? Jason Joines =============

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on-line petition against Verisign's latest abomination
by Dr. Christoph Wegener 18 Sep '03

18 Sep '03

Hi everybody, for those who are not already aware, an on-line petition has been started against Verisign's latest abomination. It can be found here: http://www.petitiononline.com/icanndns/petition.html Greetz Christoph -- .-. Ruhr-Universitaet Bochum /v\ L I N U X Lehrstuhl fuer Biophysik // \\ >Penguin Computing< c/o Dr. Christoph Wegener /( )\ Gebaeude ND 04/Nord ^^-^^ D-44780 Bochum, GERMANY Tel: +49 (234) 32-25754 Fax: +49 (234) 32-14626 mailto:christoph.wegener@bph.rub.de http://www.bph.rub.de "Snowflakes are one of nature's most fragile things, but just look what they can do when they stuck together." (Vesta Kelly)

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Fw: [VulnWatch] Zalewski Advisory - Sendmail 8.12.9 prescan bug
by Hubertus A. Haniel 18 Sep '03

18 Sep '03

Any news from the SuSE tent Best regards Hubba ---------- Forwarded Message ----------- From: "Steve W. Manzuik" <steve(a)entrenchtech.com> To: <vulnwatch(a)vulnwatch.org> Sent: Wed, 17 Sep 2003 15:11:29 -0600 Subject: [VulnWatch] Zalewski Advisory - Sendmail 8.12.9 prescan bug The following was released by Michal Zalewski; Hello lists, -------- Overview -------- There seems to be a remotely exploitable vulnerability in Sendmail up to and including the latest version, 8.12.9. The problem lies in prescan() function, but is not related to previous issues with this code. The primary attack vector is an indirect invocation via parseaddr(), although other routes are possible. Heap or stack structures, depending on the calling location, can be overwritten due to the ability to go past end of the input buffer in strtok()-alike routines. This is an early release, thanks to my sheer stupidity. -------------- Attack details -------------- Local exploitation on little endian Linux is confirmed to be trivial via recipient.c and sendtolist(), with a pointer overwrite leading to a neat case of free() on user-supplied data, i.e.: eip = 0x40178ae2 edx = 0x41414141 esi = 0x61616161 SEGV in chunk_free (ar_ptr=0x4022a160, p=0x81337e0) at malloc.c:3242 0x40178ae2 <chunk_free+486>: mov %esi,0xc(%edx) 0x40178ae5 <chunk_free+489>: mov %edx,0x8(%esi) Remote attack is believed to be possible. ---------------- Workaround / fix ---------------- Vendor was notified, and released an early patch attached below. There are no known workarounds. Index: parseaddr.c =================================================================== RCS file: /cvs/src/gnu/usr.sbin/sendmail/sendmail/parseaddr.c,v retrieving revision 1.16 diff -u -r1.16 parseaddr.c --- parseaddr.c 29 Mar 2003 19:44:01 -0000 1.16 +++ parseaddr.c 16 Sep 2003 17:37:26 -0000 -700,7 +700,11 addr[MAXNAME] = '\0'; returnnull: if (delimptr != NULL) + { + if (p > addr) + p--; *delimptr = p; + } CurEnv->e_to = saveto; return NULL; } -- ------------------------- bash$ :(){ :|:&};: -- Michal Zalewski * [http://lcamtuf.coredump.cx] Did you know that clones never use mirrors? --------------------------- 2003-09-16 21:18 -- ------- End of Forwarded Message -------

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martian source messages
by Pep Serrano 18 Sep '03

18 Sep '03

Hi all I am getting the following martian kernel messages since I changed my ISP: martian source 81.56.221.174 from 127.0.0.1, on dev ppp0 ll header: 45:08:00:28:da:b8:00:00:7d:06:b5:27:7f:00:00:01:51:38:dd:ae:00:50 Now here is the configuration of my box: I have an ADSL/Ethernet modem on ppp0: ppp0 Link encap:Point-to-Point Protocol inet addr:81.56.221.174 P-t-P:192.168.254.254 Mask:255.255.255.255 The modem is connected to eth0: eth0 Link encap:Ethernet HWaddr 00:60:97:4B:82:AA inet addr:10.0.0.1 Bcast:10.0.0.255 Mask:255.255.255.0 Additionally I have the loopback interface(127.0.0.1) and one more interface for local network: eth1 Link encap:Ethernet HWaddr 00:60:97:75:B4:28 inet addr:192.168.0.254 Bcast:192.168.0.255 Mask:255.255.255.0 I am running SuSEfirewall2 as FW and NAT router. Here are the main config parameters: FW_DEV_EXT="ppp0 eth0" FW_DEV_INT="lo eth1" FW_ROUTE="yes" FW_MASQUERADE="yes" FW_MASQ_DEV="ppp0" I don't see where I am getting these "martian packets" from. I need some help. Cheers Pep Serrano.

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SuSE Security Announcement: openssh (SuSE-SA:2003:038)
by Roman Drahtmueller 18 Sep '03

18 Sep '03

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: openssh Announcement-ID: SuSE-SA:2003:038 Date: Tuesday, Sep 16 2003 22:15 MEST Affected products: 7.2, 7.3, 8.0, 8.1, 8.2 SuSE Linux Database Server, SuSE eMail Server III, 3.1 SuSE Linux Enterprise Server 7, 8 SuSE Linux Firewall on CD/Admin host SuSE Linux Connectivity Server SuSE Linux Office Server SuSE Linux Standard Server 8 Vulnerability Type: potential remote privilege escalation Severity (1-10): 8 SuSE default package: yes Cross References: http://www.openssh.com/txt/buffer.adv CERT VU#333628 CVE CAN-2003-0693 Content of this advisory: 1) security vulnerability resolved: openssh problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - mysql 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information The openssh package is the most widely used implementation of the secure shell protocol family (ssh). It provides a set of network connectivity tools for remote (shell) login, designed to substitute the traditional BSD-style r-protocols (rsh, rlogin). openssh has various authentification mechanisms and many other features such as TCP connection and X11 display forwarding over the fully encrypted network connection as well as file transfer facilities. A programming error has been found in code responsible for buffer management. If exploited by a (remote) attacker, the error may lead to unauthorized access to the system, allowing the execution of arbitrary commands. The error is known as the buffer_append_space()-bug and is assigned the Common Vulnerabilities and Exposures (CVE) name CAN-2003-0693. At the time of writing this announcement, it is unclear if the buffer_append_space()-bug is exploitable. However, an increasing amount of TCP connection attempts to port 22 (the ssh default port) has been observed in the internet during the past days, which may indicate that there exists an exploit for the error. Please note that we have disabled the Privilege Separation feature in the ssh daemon (sshd) with this update. The PrivSep feature is designed to have parts of the ssh daemon's work running under lowered privileges, thereby limiting the effect of a possible vulnerability in the code. The PrivSep feature is turned on/off by the UsePrivilegeSeparation keyword in sshd's configuration file /etc/ssh/sshd_config. The feature is held responsible for malfunctions in PAM (Pluggable Authentification Modules). The update mechanism will not overwrite configuration files that have been altered after the package installation. SPECIAL INSTALL INSTRUCTIONS: ============================== After the update has been successfully applied, the ssh daemon (sshd) must be restarted for update package to become effective. To restart the ssh daemon after the update, please run the following command as root: rcsshd restart Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. Intel i386 Platform: SuSE-8.2: ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/openssh-3.5p1-106.i586… 492d66deaedcfc20c1f0d66e508db790 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/openssh-3.5p1-106.i586… c362fedfda79824cb40cd4e5e1055aee source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/openssh-3.5p1-106.src.r… 0381b9b4818f8b669631bcab9be80fb5 SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssh-3.4p1-214.i586… dda7728501c8cf17c60eff1862922842 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/openssh-3.4p1-214.i586… d02dfc049413b725c4255887487cfa67 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/openssh-3.4p1-214.src.r… 26dd44e9bed7a5ad2d35e56301dc5489 SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/openssh-3.4p1-214.i386.rpm 2361dccd5b0c83178f8d0d5988b3490e patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/openssh-3.4p1-214.i386.pat… 5bef6aff5a603e3376a2f907c494ea7e source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/openssh-3.4p1-214.src.rpm 203aab39cdb7c5672a82bb07bc4a1f38 SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/sec1/openssh-2.9.9p2-155.i386.r… 1418135ed33e59d1ce37ea135617b5bc source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/openssh-2.9.9p2-155.src.rpm 9d0b789127d30cca9f45c7b1f2268673 SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec1/openssh-2.9.9p2-155.i386.r… e807ecd9c4d167e3ef3764c06af1a511 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/openssh-2.9.9p2-155.src.rpm a99aa03ba94f45dd25054b1ab1a962d7 Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/sec1/openssh-2.9.9p2-52.sparc.… e4f9b7e8763464d60761faf94b7f80f9 source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/openssh-2.9.9p2-52.src.rpm ca0cbe5b564b03c64458868db369c4de PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec1/openssh-2.9.9p2-108.ppc.rpm 0166ec0aec482b687bc2891611ae8ae9 source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/openssh-2.9.9p2-108.src.rpm aed7879361a85f263a1cb3a00de964a1 ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - A buffer overflow vulnerability has been found in the mysql package, an Open Source relational database system. The error may allow a remote attacker to execute arbitrary code with the privileges of the database process. We are in the process of building and testing the update packages and will release them with a SuSE Security Announcement as soon as possible. ______________________________________________________________________________ 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) iQEVAwUBP2d1V3ey5gA9JdPZAQH8owf+IXPmGpk8DV9hKfZJF73Zc1Aam0Q4jQ3Z pY0oeJuJ/FxZql0Aw+u7+DlcLJS/QaF/rPmzflg3nokDsjm4hjAll4yCWkXGB1gM YXteTplHp5Vwstf1qyA3Y2ibUHW30g06q3zmkAQEu5VNu6Fw1HERa4bFFhcBBf3u IVSMZLh8yv/QReG9heyGDPyaIyWmdd/YDkytNhNfZBwat+9um3h2C1J5wvy/Fy+8 Brhx2isXTacKTwW7jMc7SKFzNKpZOHq8E9kFnuxx4SnVOzMtzjvKV6H/Olt8qD/m fesjbYvBUNst7yjuG/SaNLf2rGrfDq7o8NbeVzsyiZVTuFU0MqE7qA== =/eES -----END PGP SIGNATURE----- Roman Drahtmueller, SuSE Security.

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