November 2002 - openSUSE Security - openSUSE Mailing Lists

boot files question
by Piet Roorda 26 Nov '02

26 Nov '02

I need disk space and there are too may files in my /boot what ensential files should be there in theory, regards, piet

4 3

PPTP Server
by Fabio Sena 25 Nov '02

25 Nov '02

People, Exists some restriction in a server VPN PPTP, to receive connections from customers saw modem and of customers who are in another one lan at the same time? Somebody has one options.pptp that it has accepted connection it saw modem and it saw Lan? I am not obtaining to make with that the PPTP SERVER, has accepted modem connections come, is only obtaining through lan, When I try to connect way modem to server PPTP, it it arrives to soon check the user and password and of timeout after. LAN---------------------/Internet/--------------VPNSERVER(PPTP) Accepted connection and functions correctly Modem------------------/Internet/---------------VPNSERVER(PPTP) time out []'s Fabio Sena

1 0

SuSE Security Announcement: pine (SuSE-SA:2002:046)
by Thomas Biege 25 Nov '02

25 Nov '02

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: pine Announcement-ID: SuSE-SA:2002:046 Date: Monday, Nov 25th 2002 10:30 MEST Affected products: 7.1, 7.2, 7.3, 8.0, 8.1 SuSE Linux Database Server SuSE eMail Server 3.1 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 for S/390 SuSE Linux Connectivity Server SuSE Linux Enterprise Server 7 for IA32 SuSE Linux Office Server Vulnerability Type: remote denial-of-service Severity (1-10): 4 SuSE default package: yes (7.1 - 8.0) no (8.1) Cross References: none Content of this advisory: 1) security vulnerability resolved: - heap buffer overflow while parsing mail address problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - sparc distribution - WindowMaker 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information Pine, Program for Internet News and Email, is a well known and widely used eMail client. While parsing and escaping characters of eMail addresses pine does not allocate enough memory for storing the escaped mailbox part of an address. This results in a buffer overflow on the heap that will make pine crash. The offending eMail can just be deleted manually or by using another mail user agent. A possible temporary workaround is to filter the respective header lines by a mail delivery agent (such as procmail). Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. Intel i386 Platform: SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/pine-4.44-224.i586.rpm 8c32d5571d7488e31f693a884dedb81e patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/pine-4.44-224.i586.pat… 467b8b318958b0ead3f30fa7b1f5a9a0 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/pine-4.44-224.src.rpm 9b1ff436719cf9752cda3ddd711e80a7 SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/n1/pine-4.44-222.i386.rpm 01d9e82164a5ce4037b84be1b2ed4228 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/n1/pine-4.44-222.i386.patch.rpm 162c4265909af7805f7aeaf3e12e8763 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/pine-4.44-222.src.rpm d724e02b1ea3783e5bfb01ae9728d7cf SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/n1/pine-4.33-266.i386.rpm 140c58adf7d0b2113d5bbbbb20de67e2 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/pine-4.33-266.src.rpm 100c86e88ce357b0efacf7dfe2ab592c SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/n1/pine-4.33-266.i386.rpm bd44232250b3def07cab81064dad11f2 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/pine-4.33-266.src.rpm e28daa1f2d66135fcf5951c9b2dc19be SuSE-7.1: ftp://ftp.suse.com/pub/suse/i386/update/7.1/n1/pine-4.33-263.i386.rpm 9bdd3394336a786b0711b8e98ab4a268 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/pine-4.33-263.src.rpm 630478b751a24e86c52fe645be9365c4 Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n1/pine-4.33-97.sparc.rpm 5187b311c27f043178a12ae186d228a6 source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/pine-4.33-97.src.rpm 9616303edadfd899785f3ac12d2dc02a AXP Alpha Platform: SuSE-7.1: ftp://ftp.suse.com/pub/suse/axp/update/7.1/n1/pine-4.33-85.alpha.rpm f5155d79236e3ec15c463f586f731c17 source rpm(s): ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/pine-4.33-85.src.rpm 75365b21b97c8a2f722d95491f62d305 PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n1/pine-4.33-143.ppc.rpm 98955d956701d7c6c3e0522468377044 source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/pine-4.33-143.src.rpm d4cdfbf180711ae6e9bab31b87cbb3bd SuSE-7.1: ftp://ftp.suse.com/pub/suse/ppc/update/7.1/n1/pine-4.33-141.ppc.rpm 0b0512af4bdffc654bbd1774c2c8f8a9 source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/pine-4.33-141.src.rpm 0ee371a8935abe58aa53221606960bbe ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - sparc distribution We have moved the update directories for the SuSE SPARC distributions 7.0 and 7.1 as well as the distribution directory for 7.1 to the discontinued/ tree on ftp.suse.com. We urge all of the sparc users to upgrade to the SuSE-7.3-sparc distribution, the latest in the row for the sparc platform. Resource limitations keep us from timely providing update packages for the older sparc distribution. - WindowMaker A bug was found in the image processing code of windowmaker. It could allow attackers to execute arbitrary code as the user running windowmaker by tricking the user into viewing special crafted malicious image files. New packages are currently being built and 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. 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-----END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv iQEVAwUBPeIANHey5gA9JdPZAQHKlwf9EPQPcv2iqlHKQPGMeVqgKUsvA/psvxPF JHfwcZe64VvyL8o3Q/ERp2gWhBhfqI/yELMW+2nnILXEwPntZwL1P2/+BewecUFm XhOsKSdKQdaw77qyhJL+RAMf83nhZS5xRv5ckPfTgLAIIiigonQPCwq/8j5ciGmi XsEnr/aQKlaULqEEaUMyNvBuE155jIX4EDgK5WqrbJWhFuVdR4M5RqstGQx7OQ3U qltnex/G1BJ4eZPA33PW0BQEGgGFdlGHjcf6IB2A0ZTVqtUTI/F2SaFFJHBpeXBp Q+YLq/Tp0SNCGj9M5a0JN1qY1yGJxIvVscWv4Ta1z09kSBcgrDR8Ww== =ltD3 -----END PGP SIGNATURE----- Bye, Thomas -- Thomas Biege <thomas(a)suse.de> SuSE Linux AG,Deutschherrnstr. 15-19,90429 Nuernberg Function: Security Support & Auditing "lynx -source http://www.suse.de/~thomas/contact/thomas.asc | pgp -fka" Key fingerprint = 51 AD B9 C7 34 FC F2 54 01 4A 1C D4 66 64 09 83 -- Over thinking, Over analyzing, seperates the body from the mind. - Maynard James Keenan

1 0

samba machine accounts/samba living together with W2K
by Philippe Vogel 25 Nov '02

25 Nov '02

Hi! 1) I'm using Marc Heuses Seccheck and allways get errormessages that I don't want. The server is a samba/ldap pdc using shares of a W2K server. Why? W2K sucks with it's nasty ressource eating and complicated administration of ADS/Samba is 2-3x faster. Here some of the output: from /etc/passwd (machine$=machine accounts of samba/ldap with home=/dev/null): - Login datenschlund$ has non-alphanumeric characters. - Login datenschlund$ has more than 8 characters. from /etc/shadow: + Login mb124$ has non-alphanumeric characters. + Login datenschlund$ has non-alphanumeric characters. + Login datenschlund$ has more than 8 characters. - Group gr-lehrer has more than 8 characters. + user test : home directory is owned by users Same with files in user directorys. Why the probe more than 8 characters? I don't know what's the problem on linux with longer than 8 characters usernames! The $ in the username is not changeable otherwise samba would not add machines to the domain. Is there a way to get rid of that anoying log entrys or will I have to write my own sec check, that I partly allready have (mail, firewall, port access)? 2) Next thing is there anybody having knowledge of how to get gid and uid on file acl in a windoof environment taken from a samba pdc? I have top help me with local created groups that I put domain users on. There is a need to get group acls for some shares (I'm fucked up with the damn M$ rightsmanagement for directorys). Winbind does not help me because this is for using samba in a domain and give samba the uid/gid of other w2k-pdc's in a network environment. Philippe

2 1

FW question
by Miguel Albuquerque 24 Nov '02

24 Nov '02

In the option FW_ALLOW_CLASS_ROUTING="yes" --> virtual interfaces are included or not? (eth0:2 i.e. and so on...). If yes, I won't need to declare them in FW_DEV_INT, correct? And if yes, what does it implies in the security and performance scope? Thanks

2 1

after HARDEN_SUSE Xsession: login for <user> is disabled ??
by Linux User 24 Nov '02

24 Nov '02

Hi guys... I just have test the HARDEN_SUSE and when I try to login on KDE as Oracle user I get the following error: Xsession: login for oracle is disabled Any clue of how to enable it ? Thanks bye --ed

3 2

SuSEfirewall2 and SuSE 8.1
by Andreas Hallstein 23 Nov '02

23 Nov '02

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 HI, I am still struggling with getting my firewall to work. I have a ISDN dialup connection with a dynamic IP address. When I start SuSEfirewall2 at boot time the rules are correctly loaded, but after dialin the following messages appears in the syslog: Nov 22 21:47:08 Bilbo kernel: SuSE-FW-ILLEGAL-TARGET IN=ippp0 OUT= MAC= SRC=195.226.96.131 DST=195.226.100.219 LEN=223 TOS=0x00 PREC=0x00 TTL=252 ID=15433 DF PROTO=UDP SPT=53 DPT=1025 LEN=203 Nov 22 21:47:08 Bilbo kernel: SuSE-FW-ILLEGAL-TARGET IN=ippp0 OUT= MAC= SRC=195.226.96.131 DST=195.226.100.219 LEN=223 TOS=0x00 PREC=0x00 TTL=252 ID=15434 DF PROTO=UDP SPT=53 DPT=1025 LEN=203 Nov 22 21:47:08 Bilbo kernel: SuSE-FW-ILLEGAL-TARGET IN=ippp0 OUT= MAC= SRC=195.226.96.132 DST=195.226.100.219 LEN=138 TOS=0x00 PREC=0x00 TTL=252 ID=11395 DF PROTO=UDP SPT=53 DPT=1025 LEN=118 Nov 22 21:47:08 Bilbo kernel: SuSE-FW-ILLEGAL-TARGET IN=ippp0 OUT= MAC= SRC=195.226.96.131 DST=195.226.100.219 LEN=138 TOS=0x00 PREC=0x00 TTL=252 ID=15435 DF PROTO=UDP SPT=53 DPT=1026 LEN=118 Nov 22 21:47:13 Bilbo kernel: SuSE-FW-ILLEGAL-TARGET IN=ippp0 OUT= MAC= SRC=195.226.96.132 DST=195.226.100.219 LEN=138 TOS=0x00 PREC=0x00 TTL=252 ID=11396 DF PROTO=UDP SPT=53 DPT=1025 LEN=118 ...and so on. What I figured out is that the firewall rules are not reloaded after dialin, so that the new IP address of the ippp0 interface is not known to the firewall. In the ip-up script there are some settings regarding loading of the firewall, but I did not figure out so far if they work as expected. It seems to me as they are ignored. Of course I *could* reload the firewall manually after sucessful dialin, but on the other hand I expect from SuSE to provide an ip-up script that works also after a version change. It worked fine on my old 7.2 installation. regards Andreas ahallstein(a)tesionmail.de -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE93p6M5RlbrxDjpvMRArplAKCbbpW5+Rt83Lr9KjenWy1j0jTPjwCghsYw FxQrTT/pGtpT48lZBmpJc1I= =o6uU -----END PGP SIGNATURE-----

2 2

SuSE Security Announcement: samba (SuSE-SA:2002:045)
by Roman Drahtmueller 22 Nov '02

22 Nov '02

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: samba Announcement-ID: SuSE-SA:2002:045 Date: Wednesday, November 20th 2002 16:00 MET Affected products: 7.2, 7.3, 8.0, 8.1 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 Vulnerability Type: possible remote code execution Severity (1-10): 7 SuSE default package: no Cross References: http://www.samba.org/ Content of this advisory: 1) security vulnerability resolved: samba problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information Samba developer Steve Langasek found a security problem in samba, the widely known free implementation of the SMB protocol. The error consists of a buffer overflow in a commonly used routine that accepts user input and may write up to 127 bytes past the end of the buffer allocated with static length, leaving enough room for an exploit. The resulting vulnerability can be exploited locally in applications using the pam_smbpass Pluggable Authentication Module (PAM). It may be possible to exploit this vulnerability remotely, causing the running smbd to crash or even to execute arbitrary code. The samba package is installed by default only on the SuSE Linux Enterprise Server. SuSE Linux products do not have the samba and samba-client packages installed by default. The samba packages in SuSE Linux version 7.1 and before are not affected by this vulnerability. For the bug to be exploited, your system has to be running the smbd samba server, or an administrator must have (manually) changed the configuration of the PAM authentification subsystem to enable the use of the pam_smbpass module. The samba server process(es) are not activated automatically after installation (of the package). The samba subsystem on SuSE products is split into two different subpackages: samba and smbclnt up to and including SuSE Linux 7.2, on SuSE Linux 7.3 and newer the package names are samba and samba-client. To completely remove the vulnerability, you should update all of the installed packages. We wish to express our gratitude to the samba development team and in particular to Steve Langasek and Volker Lendecke who provided the patches and communicated them to the vendors. Please know that the samba team will release the new version 2.2.7 of the samba software to address the security fix at the same time as this announcement gets published. More information about samba (and the security fix) is available at http://www.samba.org. 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. SPECIAL INSTALL INSTRUCTIONS: ============================== After successfully installing the update packages, you should restart the samba server process(es) to make the changes in the system effective. If you do not have a samba server running on your system, no further action is required. If you have a samba server running, please run the following command as root: rcsmb restart # SuSE Linux, all versions rcnmb restart # only on SuSE Linux 8.1 Intel i386 Platform: SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/samba-2.2.5-124.i586.r… f0a94ef6cc49165d4dace59caaf359d7 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/samba-client-2.2.5-124… f694fb4aaabffa98b6a76941cb2c0eaf patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/samba-2.2.5-124.i586.p… af43bc1d5dc1b097389933f34ca5a625 ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/samba-client-2.2.5-124… bff278f9366df7efe72fa880c4f7618f source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/samba-2.2.5-124.src.rpm 674adb466663259c2117852b9525a29a SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/samba-2.2.3a-165.i386.rpm 8c7edd09c5acfc269467ecbcdcdfc21c ftp://ftp.suse.com/pub/suse/i386/update/8.0/n1/samba-client-2.2.3a-165.i386… bfc08a1d64f0d85670041c7046d1e775 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/n2/samba-2.2.3a-165.i386.patch.… 7d08c2c07137d9da0b3d1a301295a084 ftp://ftp.suse.com/pub/suse/i386/update/8.0/n1/samba-client-2.2.3a-165.i386… 887230d4ed61bec496dff73c50fa3de0 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/samba-2.2.3a-165.src.rpm b208c4d5bcceb7f9cc18df75b7831d2d SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/n2/samba-2.2.1a-206.i386.rpm dc4232333a0babbb257cff346609625f ftp://ftp.suse.com/pub/suse/i386/update/7.3/n1/samba-client-2.2.1a-206.i386… 163a565a5a0b0320eae6ba1d0ebdfb27 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/samba-2.2.1a-206.src.rpm 6086e3bb296a320c28fced9068c931fc SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/n2/samba-2.2.0a-45.i386.rpm 184b17987ca99325782f4c7f9e04b6a6 ftp://ftp.suse.com/pub/suse/i386/update/7.2/n1/smbclnt-2.2.0a-45.i386.rpm b9926ade015ccaf271088da246814abb source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/samba-2.2.0a-45.src.rpm 384ec49b0b8a81d8ecf7c84ef0fa2689 Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n2/samba-2.2.1a-69.sparc.rpm 61b72787bc8e0b333662962a60bce0c2 ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n1/samba-client-2.2.1a-69.spar… 6acd0ffd218d721d7c10b17e1194738d source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/samba-2.2.1a-69.src.rpm 77f57a3277bb1a270ae79bc94ee28345 PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n2/samba-2.2.1a-141.ppc.rpm d127afabc7d5b764289f9b65ad4c4cd1 ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n1/samba-client-2.2.1a-141.ppc.r… 894132f3b5041a54ec871d67eef072e5 source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/samba-2.2.1a-141.src.rpm ccff812fdddd3af9d62a399f63e0405e ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - 7.0 update trees We will move the SuSE Linux 7.0 update tree structure to the /pub/suse/discontinued/ tree shortly, following the announcement about discontinued products on Tue, 29 Oct 2002. ______________________________________________________________________________ 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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4 11

Susefirewall Squid
by Frédéric Poulet 22 Nov '02

22 Nov '02

Hi, I read that use Squid with Susefirewall allow to have more security, is it true ? I would want try Squid how i can config Squid and Susefirewall, i don't find example ? Thanks ___________________________________________________________ Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français ! Yahoo! Mail : http://fr.mail.yahoo.com

4 3

Setting firewall to disable one external address
by Jevoš Peter 22 Nov '02

22 Nov '02

Hello I've one question how can I set SuSEfirewall2 to drop all packet (tcp, udp, icmp) from exactly one external public address, for propably reason much more requests for DNS server thanx a lot for your answers peter

1 0