January 2000 - openSUSE Security - openSUSE Mailing Lists

Wrong md5 for lprold?
by Martin Leweling 15 Jan '00

15 Jan '00

Dear SuSE-Team, I am not able to verify the md5 checksum for the package lprold (SuSE 6.1, i386, see security announcement below). After trying out to download the file multiple times from ftp.suse.com, instead of a40c4313756d5b3870fd4bd90e74bc32 ftp://ftp.suse.com/pub/suse/i386/update/6.1/n1/lprold-3.0.48-0.i386.rpm I get the following checksum: # md5sum lprold-3.0.48-0.i386.rpm 759c041c44631fabf0f1d069a92fc8f1 lprold-3.0.48-0.i386.rpm Has anyone else been able to correcty verify the checksum? I am not going to install the package until the issue is resolved, but disable lpd completely. The md5 checksum for the Alpha package (6.1) seems to be ok. Yours sincerely, Martin Leweling -- Martin Leweling Institut fuer Planetologie, WWU Muenster Wilhelm-Klemm-Str. 10, 48149 Muenster, Germany E-Mail (work): lewelin(a)uni-muenster.de Original message follows: >______________________________________________________________________________ > > SuSE Security Announcement > > Package: lprold < 3.0.48 > Date: Tue, 11 Jan 2000 13:01:16 GMT > > Affected SuSE versions: all including 6.3 > Vulnerability Type: local and remote vulnerabilities > SuSE default package: yes > Other affected systems: all unix systems using lpr(-old) >______________________________________________________________________________ > >A security hole was discovered in the package mentioned above. >Please update as soon as possible or disable the service if you are using >this software on your SuSE Linux installation(s). > >Other Linux distributions or operating systems might be affected as >well, please contact your vendor for information about this issue. > >Please note, that that we provide this information on an "as-is" basis only. >There is no warranty whatsoever and no liability for any direct, indirect or >incidental damage arising from this information or the installation of >the update package. >_____________________________________________________________________________ > >1. Problem Description > > lprold is the default printer daemon. > If the hosts.lpd mechanism is used to permit printing to remote hosts, > this can be circumvented if the attacker controls a DNS server, because > no double-reverse lookup was done the IP address. > A second vulnerability involves the manipulating the control file of a > print job in a way, that statements are sent to sendmail as arguments > where an attacker could specify a sendmail config file of his own. > >2. Impact > > Depending on the hosts.lpd configuration, unauthorized users may use your > printer (and issue a denial of service attack). > The second vulnerability leads to an easy root compromise, which can be > exploited from remote. > >3. Solution > > Update the package from our FTP server. >______________________________________________________________________________ > >Please verify these md5 checksums of the updates before installing: >(For SuSE 6.0, please use the 6.1 updates) > >ea107e004f8c101421a8b3951e7237fe ftp://ftp.suse.com/pub/suse/axp/update/6.1/n1/lprold-3.0.48-0.alpha.rpm >8a175ed07a65ef4ea9c88a408aef1e4b ftp://ftp.suse.com/pub/suse/axp/update/6.3/n1/lprold-3.0.48-0.alpha.rpm >a40c4313756d5b3870fd4bd90e74bc32 ftp://ftp.suse.com/pub/suse/i386/update/6.1/n1/lprold-3.0.48-0.i386.rpm >13fbf962761751a5a8eec000da26202f ftp://ftp.suse.com/pub/suse/i386/update/6.2/n1/lprold-3.0.48-0.i386.rpm >52b8bc00d744995f13b4f35da2c6cb5d ftp://ftp.suse.com/pub/suse/i386/update/6.3/n1/lprold-3.0.48-0.i386.rpm >______________________________________________________________________________ > >You can find updates on our ftp-Server: > > ftp://ftp.suse.com/pub/suse/i386/update for Intel processors > ftp://ftp.suse.com/pub/suse/axp/update for Alpha processors > >or try the following web pages for a list of mirrors: > http://www.suse.de/ftp.html > http://www.suse.com/ftp_new.html > >Our webpage for patches: > http://www.suse.de/patches/index.html > >Our webpage for security announcements: > http://www.suse.de/security > >If you want to report vulnerabilities, please contact > security(a)suse.de >______________________________________________________________________________ > >SuSE has got two free security mailing list services to which any >interested party may subscribe: > >suse-security(a)suse.com - moderated and for general/linux/SuSE > security discussions. All SuSE security > announcements are send to this list. > >suse-security-announce(a)suse.com - SuSE's announce-only mailing list. > Only SuSE's security annoucements are sent > to this list. > >To subscribe to the list, send a message to: > <suse-security-subscribe(a)suse.com> > >To remove your address from the list, send a message to: > <suse-security-unsubscribe(a)suse.com> > >Send mail to the following for info and FAQ for this list: > <suse-security-info(a)suse.com> > <suse-security-faq(a)suse.com> > >_____________________________________________________________________________ > > This information is provided freely to everyone interested and may > be redistributed provided that it is not altered in any way. > >Type Bits/KeyID Date User ID >pub 2048/3D25D3D9 1999/03/06 SuSE Security Team <security(a)suse.de>

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AW: [suse-security] Probleme mit Postfix bei Update auf SuSE 6.3
by Krupka, Jan 15 Jan '00

15 Jan '00

> -----Ursprüngliche Nachricht----- > Von: Holger Schmidt [mailto:H-WAIT-4U@gmx.de] > Gesendet: Donnerstag, 13. Januar 2000 15:16 > An: suse-security(a)suse.de > Betreff: [suse-security] Probleme mit Postfix bei Update auf SuSE 6.3 > > > Hallo zusammen, > > heute morgen habe ich mein SuSE 6.1 auf 6.3 upgedated. hmm, ich auch > Zunächst gibt es einfach keine Zurück-Funktion beim Update. > Falls man sich > aus Versehen mal vertan hat, kann man zwar Abbruch wählen, > aber auf die > vorherige Seite kommt man nicht zurück (um den Fehler zu beheben)! muss ich auch bemängeln > In der Datenbankdatei "/etc/aliases.db" fehlte der Eintrag "Postfix: > root", der Mails für den Benutzer postfix an root > weiterleitet. Ich hab festgestellt, dass /etc/aliases im yastbackup nicht gesichert wird, obwohl die Datei definitiv geändert wurde, und dass sie auch beim Update nicht gebackupt sondern übergebügelt wird. :( > Ciao > Holger /jk PS: Gibts auch ne SUSE-Support oder SUSE-Allgemein Liste? Das Thema erscheint mir ziemlich OFF TOPIC.

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How to report problems with the SuSEfirewall (firewals.rpm)
by marc＠suse.de 15 Jan '00

15 Jan '00

Hi Nick, (cc: to suse-security -> everyone else who sends me mails with the firewals.rpm problems - please see below - how to send in problem/bug reports! - and please first try the ftp server of SuSE if there's a newer rpm update for firewals and see if that works! current update rpm version is v1.4, current beta is v1.8) > I had some trouble with version 1.4 (multiple messages during booting plus a > few others because of the old ipfwadm (I did an suse upgrade from 6.0 to > 6.3)) so I installed ver 1.8. Now the booting looks much cleaner but I > suspect that now some errors are being created in the rule database. but did everything work with v1.4? > After setting things up in the new /etc/rc. file I could not get on the > internet from my lan anymore. I could ping the firewall but not the gateway. > Only after disabling the filter and echo 1 into ip_forward allowed me to > send this message to you (from my other computer on my lan). I had not these > problems with the old version 1.4. > I checked with gfcc what happened with the rules (apparantly, this is ok) > but writing anything with gfcc blocks the use of all network connections? > > Do you have any idea? hey, I don't have got psionic powers ;-) please send me the output of the following stuff: "grep ^FW /etc/rc.firewall" "ipchains -L -nv" "route -n" "ifconfig -a" and an exact description what does not work. Please note that there's no support from SuSE for the firewals package (except if you are paying for professional support) - however I help everyone as best as I can. But because I'm often busy, this might take some time - but normally not. Send your emails to marc(a)suse.de Greets, Marc -- Marc Heuse, SuSE GmbH, Schanzaeckerstr. 10, 90443 Nuernberg E@mail: marc(a)suse.de Function: Security Support & Auditing "lynx -source http://www.suse.de/~marc/marc.pgp | pgp -fka" Key fingerprint = B5 07 B6 4E 9C EF 27 EE 16 D9 70 D4 87 B5 63 6C

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SuSE Security Announcement - lprold
by marc＠suse.de 14 Jan '00

14 Jan '00

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: lprold < 3.0.48 Date: Tue, 11 Jan 2000 13:01:16 GMT Affected SuSE versions: all including 6.3 Vulnerability Type: local and remote vulnerabilities SuSE default package: yes Other affected systems: all unix systems using lpr(-old) ______________________________________________________________________________ A security hole was discovered in the package mentioned above. Please update as soon as possible or disable the service if you are using this software on your SuSE Linux installation(s). Other Linux distributions or operating systems might be affected as well, please contact your vendor for information about this issue. Please note, that that we provide this information on an "as-is" basis only. There is no warranty whatsoever and no liability for any direct, indirect or incidental damage arising from this information or the installation of the update package. _____________________________________________________________________________ 1. Problem Description lprold is the default printer daemon. If the hosts.lpd mechanism is used to permit printing to remote hosts, this can be circumvented if the attacker controls a DNS server, because no double-reverse lookup was done the IP address. A second vulnerability involves the manipulating the control file of a print job in a way, that statements are sent to sendmail as arguments where an attacker could specify a sendmail config file of his own. 2. Impact Depending on the hosts.lpd configuration, unauthorized users may use your printer (and issue a denial of service attack). The second vulnerability leads to an easy root compromise, which can be exploited from remote. 3. Solution Update the package from our FTP server. ______________________________________________________________________________ Please verify these md5 checksums of the updates before installing: (For SuSE 6.0, please use the 6.1 updates) ea107e004f8c101421a8b3951e7237fe ftp://ftp.suse.com/pub/suse/axp/update/6.1/n1/lprold-3.0.48-0.alpha.rpm 8a175ed07a65ef4ea9c88a408aef1e4b ftp://ftp.suse.com/pub/suse/axp/update/6.3/n1/lprold-3.0.48-0.alpha.rpm a40c4313756d5b3870fd4bd90e74bc32 ftp://ftp.suse.com/pub/suse/i386/update/6.1/n1/lprold-3.0.48-0.i386.rpm 13fbf962761751a5a8eec000da26202f ftp://ftp.suse.com/pub/suse/i386/update/6.2/n1/lprold-3.0.48-0.i386.rpm 52b8bc00d744995f13b4f35da2c6cb5d ftp://ftp.suse.com/pub/suse/i386/update/6.3/n1/lprold-3.0.48-0.i386.rpm ______________________________________________________________________________ You can find updates on our ftp-Server: ftp://ftp.suse.com/pub/suse/i386/update for Intel processors ftp://ftp.suse.com/pub/suse/axp/update for Alpha processors or try the following web pages for a list of mirrors: http://www.suse.de/ftp.html http://www.suse.com/ftp_new.html Our webpage for patches: http://www.suse.de/patches/index.html Our webpage for security announcements: http://www.suse.de/security If you want to report vulnerabilities, please contact security(a)suse.de ______________________________________________________________________________ SuSE has got two free security mailing list services to which any interested party may subscribe: suse-security(a)suse.com - moderated and for general/linux/SuSE security discussions. All SuSE security announcements are send to this list. suse-security-announce(a)suse.com - SuSE's announce-only mailing list. Only SuSE's security annoucements are sent to this list. To subscribe to the list, send a message to: <suse-security-subscribe(a)suse.com> To remove your address from the list, send a message to: <suse-security-unsubscribe(a)suse.com> Send mail to the following for info and FAQ for this list: <suse-security-info(a)suse.com> <suse-security-faq(a)suse.com> _____________________________________________________________________________ This information is provided freely to everyone interested and may be redistributed provided that it is not altered in any way. 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Firewall script in SuSE 6.3
by andy 14 Jan '00

14 Jan '00

I have installed the above and configured it, (Just with a very simple config to disallow almost everything), but, when I run '/sbin/init.d/firewall start' I get the message, Starting Firewall Initialization: Warning: you must enable IP forwarding for packets to be forwarded at all: Use `echo 1 > /proc/sys/net/ipv4/ip_forward' I have already enabled IP Forwarding in yast and re-started but I try it anyway - it accepts it but when I then run 'firewall start' again it says the same thing. Any ideas?? Regards Andy Bennett andy(a)itosn.com

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Virtual Private Network
by Stephan Gerling 14 Jan '00

14 Jan '00

Hi subscribers, Whats about VPN. I am looking for an solution to grant access to some user behind an Firewall on an private Network like 192.168........ Does anybody known about a way to do this with Linux??? thanks Stephan Gerling

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Re: freeswan.rpm
by marc＠suse.de 13 Jan '00

13 Jan '00

Hi, try ftp.gwdg.de (I think it's /pub/linux/suse/6.3/i386.de/suse/sec1) and there are several more crypto packages. cc: to suse-security so everyone remembers this ;-) > Hello Marc, > > I'm hoping you may be able to help me locate the freeswan.rpm package that > is included with the SuSe 6.3 (European version) I am located in Canada and > recently purchased suse 6.3 in hopes of finding the rpm versions of > freeswan. I must say that I am very pleased with the Suse version of Linux > (I had never had the opportunity to use/see it in use). Greets, Marc -- Marc Heuse, SuSE GmbH, Schanzaeckerstr. 10, 90443 Nuernberg E@mail: marc(a)suse.de Function: Security Support & Auditing "lynx -source http://www.suse.de/~marc/marc.pgp | pgp -fka" Key fingerprint = B5 07 B6 4E 9C EF 27 EE 16 D9 70 D4 87 B5 63 6C

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Probleme mit Postfix bei Update auf SuSE 6.3
by Holger Schmidt 13 Jan '00

13 Jan '00

Hallo zusammen, heute morgen habe ich mein SuSE 6.1 auf 6.3 upgedated. Dabei hatte ich einige kleinere und größere Probleme, die ich gerne mal loswerden möchte. Eventuell kann SuSE einige Verbesserungen in zukünftigen Versionen erreichen. Zunächst gibt es einfach keine Zurück-Funktion beim Update. Falls man sich aus Versehen mal vertan hat, kann man zwar Abbruch wählen, aber auf die vorherige Seite kommt man nicht zurück (um den Fehler zu beheben)! So geschehen, nachdem ich das Basissystem upgedated hatte und mich um die Packages kümmern wollte. Zum Abschluß des Updates wurde ich gebeten ein Kernel auszusuchen, mit dem ich demnächst gerne booten würde. Da ich bestimmte Komponenten einsetze war eine Kernel-Kompilierung eh nötig, so daß ich dieses umgangen habe. Leider ist beim Update irgendwie mein altes Kernel-Konfigurationsfile abhanden gekommen, was mir die Auswahl aus den unzähligen neuen Parametern nicht einfacher machte. Aber kommen wir zum eigentlichen Problem. Nach einem Reboot startete das Postfix-Mailsystem nicht mehr. Auch eine komplette Deinstallation (nach Sicherung der Konfigurationsdateien) und erneute Installation brachte keine Abhilfe. Bei der Untersuchung der Vorgänge stieß ich darauf, daß im Verzeichnis /usr/lib/postfix die Dateien postlog und postsuper gesucht, aber nicht gefunden wurden. Nach Erzeugung dieser Dateien (mit entsprechenden Rechten) ließ sich Postfix mit "/etc/rc.d/postfix start" starten. Nun konnte ich schon mal Mails versenden, aber noch keine empfangen (siehe folgenden Ausschnitt). Ausschnitt aus der Log-Datei: Jan 13 10:56:34 snpcom postfix/pickup[5034]: AB074A0BE: uid=1283 from=<snp> Jan 13 10:56:34 snpcom postfix/cleanup[5155]: AB074A0BE: message-id=<20000113095634.AB074A0BE(a)domain.arcor.net> Jan 13 10:56:34 snpcom postfix/qmgr[5035]: AB074A0BE: from=<snp>, size=325 (queue active) Jan 13 10:56:35 snpcom postfix/smtp[5157]: AB074A0BE: to=<holger-schmidt(a)arcor.net>, relay=tm.arcor.net[10.128.10.2], delay=1, status=sent (250 KAA29073 Message accepted for delivery) Jan 13 10:58:09 snpcom postfix/smtpd[5161]: connect from tm.cni.net[10.128.10.2] Jan 13 10:58:09 snpcom postfix/smtpd[5161]: 3B2BEA0C0: client=tm.cni.net[10.128.10.2] Jan 13 10:58:09 snpcom postfix/cleanup[5155]: 3B2BEA0C0: message-id=<41256865.0037C64E.00(a)ffm-hq-gtw01.Arcor.net> Jan 13 10:58:09 snpcom postfix/qmgr[5035]: 3B2BEA0C0: from=<Holger-Schmidt(a)arcor.net>, size=795 (queue active) Jan 13 10:58:09 snpcom postfix/local[5162]: fatal: open database /etc/aliases.db: Invalid argument Jan 13 10:58:09 snpcom postfix/smtpd[5161]: disconnect from tm.cni.net[10.128.10.2] Jan 13 10:58:10 snpcom postfix/qmgr[5035]: warning: mail_scan_any: got EOF; expected: string Jan 13 10:58:10 snpcom postfix/qmgr[5035]: warning: private/local: malformed response Jan 13 10:58:10 snpcom postfix/master[5033]: warning: process /usr/lib/postfix/local pid 5162 exit status 1 Jan 13 10:58:10 snpcom postfix/master[5033]: warning: /usr/lib/postfix/local: bad command startup -- throttling In der Datenbankdatei "/etc/aliases.db" fehlte der Eintrag "Postfix: root", der Mails für den Benutzer postfix an root weiterleitet. Leider ließ sich dieser Eintrag nicht durch Ausführung von "newaliases" bestätigen, da das Tool eine ausführbare Datei "postalias" im Verzeichnis /usr/lib/postfix benötigte. Ein Link auf das Programm /usr/sbin/postalias brachte den gewünschten Erfolg. Danach konnte ich wieder Mails empfangen. Letztendlich gab es noch ein kleineres Problem mit procmail, aber dann habe ich die neue Version auf dem SuSE-Server gefunden. Vielleicht weiß ja jemand von euch, wo mein Problem lag ?! Ciao Holger -- Sent through Global Message Exchange - http://www.gmx.net

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mysterios finger results ?
by Widmann Thomas 11 Jan '00

11 Jan '00

hi the result of an finger command against a machine look's like: >syslogd: no process killed >klogd: no process killed >crond: no process killed >rm: cannot remove `/etc/syslog.conf': No such file or directory >rm: cannot remove `/etc/hosts.deny': No such file or directory >rm: cannot remove `/etc/hosts.allow': No such file or directory >sh: /etc/issue.net: Permission denied >sh: /etc/services: Permission denied >sh: /etc/inetd.conf: Permission denied >sh: /etc/passwd: Permission denied >sh: /etc/passwd: Permission denied >sh: /etc/inetd.conf: Permission denied >sh: /etc/rc.d/rc.local: Permission denied >sh: /etc/rc.d/rc.local: Permission denied >sh: /etc/rc.d/rc.local: Permission denied >sh: /etc/rc.d/rc.local: Permission denied >sh: /etc/rc.d/rc.local: Permission denied what's THIS ? it look's like an try to get into my machine ? can someone explain me this result of this finger command ? any hints ? ciao thomas

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Re: [suse-security] Application Firewall.
by Rainer Link 10 Jan '00

10 Jan '00

Stephan Gerling wrote: Hi! > Is the SuSE Proxy Suite it too ???? Well, the SuSE Proxy Suite contains yet only an FTP Proxy, see http://proxy-suite.suse.de > What is about NNTP, SMTP, Netmeeting, Telnet.... Are there Proxy´s too ???? Hmm, what about the TIS FWTK (www.fwtk.org) or the Juniper Firewall from Obtuse (www.obtuse.com/open_source/) Imho there's a lack of (good) Application Gateways for Linux - but maybe this changes with the SuSE Proxy Suite?! :-) > What´s about Virus/Trojan or ActiveX and Script Scanning on an Firewall Gateway under Linux. > Are there any tools avaible for free or only commercial Produkts ??? Commercial: Trend Micro's InterScan VirusWall (www.antivirus.com) but it does not work with SuSE 6.2 (I have reports, that it does not work with 6.3, too), because it was developed for RedHat 6.x (I hate it, if software does only run with a specific Linux distro). Well, limited to eMail Gateway, either AMaViS (GPL), IspMailGate, Scan4Virus (GPL) or H+B EDV AvGuard (commercial, imho). AMaViS can be found at http://amavis.org - but please have a look at http://www.ce.is.fh-furtwangen.de/~link/security/amavis-patch.php3 and especially http://www.unixzone.com/virus/ IspMailGate is a Perl Module, see (your local) CPAN-Archive. Scan4Virus (works only with qmail), see http://www.geocities.com/jhaar/scan4virus/ AvGate is still beta (currently 0.7, IIRC), see ftp.antivir.de/linux/ I would recommend AMaViS, but, well, I'm biased :-) You may also have a look at: http://www.ce.is.fh-furtwangen.de/~link/security/av-linux.php3 http://www.ce.is.fh-furtwangen.de/~link/security/hotlist.php3#Linux HTH best regards, Rainer Link Maintainer Mini-FAQ "Antivirus software for Linux" Member of the AMaViS Development Group -- Rainer Link, eMail: linkra(a)fh-furtwangen.de, WWW: http://rainer.w3.to/ Student of Communication Engineering/Computer Networking, University of Applied Sciences,Furtwangen,Germany,http://www.ce.is.fh-furtwangen.de/

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