openSUSE Bugs September 2011

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[Bug 597673] New: fetchmail: DoS in -v -v mode in multibyte

by bugzilla_noreply＠novell.com

http://bugzilla.novell.com/show_bug.cgi?id=597673 http://bugzilla.novell.com/show_bug.cgi?id=597673#c0 Summary: fetchmail: DoS in -v -v mode in multibyte Classification: openSUSE Product: openSUSE 11.3 Version: Factory Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Security AssignedTo: puzel(a)novell.com ReportedBy: lnussel(a)novell.com QAContact: qa(a)suse.de CC: security-team(a)suse.de Found By: Other Blocker: --- Your friendly security team received the following report via oss-security. Please respond ASAP. The issue is public. Factory only sufficient ------------------------------------------------------------------------------ Date: Sun, 18 Apr 2010 18:58:30 +0200 From: "Matthias Andree" <matthias.andree(a)gmx.de> Subject: [oss-security] CVE request: fetchmail 4.6.3...6.3.16 DoS in -v -v mode in multibyte locales on invalid input Please assign a CVE id for the issue described below. (Best viewed in non-proportional font with 8 space tabs): Draft announcement: - DRAFT - XXX - DRAFT - fetchmail-SA-2010-02: Denial of service in debug mode w/ multichar locales Topics: Denial of service in debug output. Author: Matthias Andree Version: 0.1 XXX Announced: XXX Type: malloc() Buffer overrun with printable characters Impact: Denial of service. Danger: low CVE Name: CVE-2010-XXXX CVSSv2: XXX URL: http://www.fetchmail.info/fetchmail-SA-2010-02.txt Project URL: http://www.fetchmail.info/ Affects: fetchmail releases 4.6.3 up to and including 6.3.16 Not affected: fetchmail release 6.3.17 and newer Corrected: 2010-04-18 Git (XXX) 0. Release history ================== 2010-04-18 0.1 first draft (visible in SVN and through oss-security) XXX 1. Background ============= fetchmail is a software package to retrieve mail from remote POP2, POP3, IMAP, ETRN or ODMR servers and forward it to local SMTP, LMTP servers or message delivery agents. It supports SSL and TLS security layers through the OpenSSL library, if enabled at compile time and if also enabled at run time. 2. Problem description and Impact ================================= In debug mode (-v -v), fetchmail prints information that was obtained from the upstream server (POP3 UIDL lists) or from message headers retrieved from it. If printing such information fails, for instance because there are invalid multibyte character sequences in this information (message headers), fetchmail will misinterpret this condition, and believe that the buffer was too small, and reallocate a bigger one (with linearly increasing buffer size), and repeat, until the allocation fails. At that point, fetchmail will abort. Note that the "Affects:" line above may be inaccurate, and it may be that versions before 5.6.6 are actually unaffected. The author was unable to compile such old fetchmail versions to verify the existence of the bug. Given that other security issues are present in such versions, those should not be used, and the wider version range was listed as vulnerable to err towards the safe. 3. Solution =========== There are two alternatives, either of them by itself is sufficient: a. Apply the patch found in section B of this announcement to fetchmail 6.3.14 or newer, recompile and reinstall it. b. Install fetchmail 6.3.17 or newer after it will have become available. The fetchmail source code is always available from <http://developer.berlios.de/project/showfiles.php?group_id=1824>. 4. Workaround ============= Run fetchmail with at most one -v (--verbose) option. A. Copyright, License and Warranty ================================== (C) Copyright 2010 by Matthias Andree, <matthias.andree(a)gmx.de>. Some rights reserved. This work is licensed under the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Germany License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/de/ or send a letter to Creative Commons 171 Second Street Suite 300 SAN FRANCISCO, CALIFORNIA 94105 USA THIS WORK IS PROVIDED FREE OF CHARGE AND WITHOUT ANY WARRANTIES. Use the information herein at your own risk. B. Patch to remedy the problem ============================== Note that when taking this from a GnuPG clearsigned file, the lines starting with a "-" character are prefixed by another "- " (dash + blank) combination. Either feed this file through GnuPG to strip them, or strip them manually. You may want to use the "-p1" flag to patch. Whitespace differences can usually be ignored by invoking "patch -l", so try this if the patch does not apply. diff --git a/rfc822.c b/rfc822.c index 6f2dbf3..dbcda32 100644 --- a/rfc822.c +++ b/rfc822.c @@ -25,6 +25,7 @@ MIT license. Compile with -DMAIN to build the demonstrator. #include <stdlib.h> #include "fetchmail.h" +#include "sdump.h" #ifndef MAIN #include "i18n.h" @@ -74,9 +75,10 @@ char *reply_hack( } #ifndef MAIN - if (outlevel >= O_DEBUG) - report_build(stdout, GT_("About to rewrite %.*s...\n"), - (int)BEFORE_EOL(buf), buf); + if (outlevel >= O_DEBUG) { + report_build(stdout, GT_("About to rewrite %s...\n"), (cp = sdump(buf, BEFORE_EOL(buf)))); + xfree(cp); + } /* make room to hack the address; buf must be malloced */ for (cp = buf; *cp; cp++) @@ -211,9 +213,12 @@ char *reply_hack( } #ifndef MAIN - if (outlevel >= O_DEBUG) - report_complete(stdout, GT_("...rewritten version is %.*s.\n"), - (int)BEFORE_EOL(buf), buf); + if (outlevel >= O_DEBUG) { + report_complete(stdout, GT_("...rewritten version is %s.\n"), + (cp = sdump(buf, BEFORE_EOL(buf)))); + xfree(cp) + } + #endif /* MAIN */ *length = strlen(buf); return(buf); diff --git a/uid.c b/uid.c index fdc6f5d..d813bee 100644 --- a/uid.c +++ b/uid.c @@ -20,6 +20,7 @@ #include "fetchmail.h" #include "i18n.h" +#include "sdump.h" /* * Machinery for handling UID lists live here. This is mainly to support @@ -260,8 +261,11 @@ void initialize_saved_lists(struct query *hostlist, const char *idfile) if (uidlcount) { report_build(stdout, GT_("Scratch list of UIDs:")); - for (idp = scratchlist; idp; idp = idp->next) - report_build(stdout, " %s", idp->id); + for (idp = scratchlist; idp; idp = idp->next) { + char *t = sdump(idp->id, strlen(idp->id)); + report_build(stdout, " %s", t); + free(t); + } if (!idp) report_build(stdout, GT_(" <empty>")); report_complete(stdout, "\n"); @@ -517,8 +521,11 @@ void uid_swap_lists(struct query *ctl) report_build(stdout, GT_("Merged UID list from %s:"), ctl->server.pollname); else report_build(stdout, GT_("New UID list from %s:"), ctl->server.pollname); - for (idp = dofastuidl ? ctl->oldsaved : ctl->newsaved; idp; idp = idp->next) - report_build(stdout, " %s = %d", idp->id, idp->val.status.mark); + for (idp = dofastuidl ? ctl->oldsaved : ctl->newsaved; idp; idp = idp->next) { + char *t = sdump(idp->id, strlen(idp->id)); + report_build(stdout, " %s = %d", t, idp->val.status.mark); + free(t); + } if (!idp) report_build(stdout, GT_(" <empty>")); report_complete(stdout, "\n"); @@ -567,8 +574,11 @@ void uid_discard_new_list(struct query *ctl) /* this is now a merged list! the mails which were seen in this * poll are marked here. */ report_build(stdout, GT_("Merged UID list from %s:"), ctl->server.pollname); - for (idp = ctl->oldsaved; idp; idp = idp->next) - report_build(stdout, " %s = %d", idp->id, idp->val.status.mark); + for (idp = ctl->oldsaved; idp; idp = idp->next) { + char *t = sdump(idp->id, strlen(idp->id)); + report_build(stdout, " %s = %d", t, idp->val.status.mark); + free(t); + } if (!idp) report_build(stdout, GT_(" <empty>")); report_complete(stdout, "\n"); -- Matthias Andree -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 4 months

[Bug 690867] New: Consider to DNSSEC sign the opensuse.org domain

by bugzilla_noreply＠novell.com

https://bugzilla.novell.com/show_bug.cgi?id=690867 https://bugzilla.novell.com/show_bug.cgi?id=690867#c0 Summary: Consider to DNSSEC sign the opensuse.org domain Classification: openSUSE Product: openSUSE.org Version: unspecified Platform: Other OS/Version: Other Status: NEW Severity: Enhancement Priority: P5 - None Component: Infrastructure AssignedTo: mrueckert(a)novell.com ReportedBy: burnus(a)gmx.de QAContact: lrupp(a)novell.com Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:2.0) Gecko/20100101 Firefox/4.0 Currently, the opensuse.org domain is not secured using DNSSEC: http://dnsviz.net/d/opensuse.org/dnssec/ It would be useful, if it could be signed. Other domains are already signed such as: - Fedora: http://dnsviz.net/d/fedoraproject.org/dnssec/ - Mozilla: http://dnsviz.net/d/wiki.mozilla.org/dnssec/ (Side remark: In Firefox, the plugin http://www.dnssec-validator.cz/ can be used to see the DNSSEC status.) Reproducible: Always -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 4 months

[Bug 712025] New: openssh helpers wrongly uses %_libdir

by bugzilla_noreply＠novell.com

https://bugzilla.novell.com/show_bug.cgi?id=712025 https://bugzilla.novell.com/show_bug.cgi?id=712025#c0 Summary: openssh helpers wrongly uses %_libdir Classification: openSUSE Product: openSUSE 12.1 Version: Factory Platform: x86-64 OS/Version: Linux Status: NEW Severity: Normal Priority: P5 - None Component: Network AssignedTo: bnc-team-screening(a)forge.provo.novell.com ReportedBy: jengelh(a)medozas.de QAContact: qa(a)suse.de Found By: Beta-Customer Blocker: --- I had a openSUSE 11.4 i586 installation on one machine, and as I was upgrading its hardware to a 64-bit CPU, I did a x86_64 reinstall, and copied over the configs from the previous install. Among that was /etc/ssh/sshd_config. After this, sftp was no longer usable ("Connection closed by host"), hinting towards the helper not being executable. sshd_config, having been inherited from a i586 environment, contained: Subsystem sftp /usr/lib/ssh/sftp-server However, the sftp helper was installed in /usr/lib64/ssh (%_libdir/ssh), which I consider the wrong place, because the helper is bitness-independent and thus should go to %_libexecdir/ssh instead. The problem persists by looking at the current /network/openssh/openssh.spec. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 7 months

[Bug 536564] New: Packages creating user accounts do not select UID

by bugzilla_noreply＠novell.com

http://bugzilla.novell.com/show_bug.cgi?id=536564 Summary: Packages creating user accounts do not select UID Classification: openSUSE Product: openSUSE 11.1 Version: Final Platform: All OS/Version: Linux Status: NEW Severity: Minor Priority: P5 - None Component: Basesystem AssignedTo: bnc-team-screening(a)forge.provo.novell.com ReportedBy: jengelh(a)medozas.de QAContact: qa(a)suse.de Found By: Beta-Customer Some packages, such as openssh, do explicitly specify a UID/GID when creating its users/groups: /usr/sbin/groupadd -g 65 -o -r sshd 2>/dev/null || :; On the other hand, the hal package does not: /usr/sbin/groupadd -r haldaemon 2>/dev/null || : So, which is correct? Should not hal also use a fixed ID? There are many packages belonging to the latter category. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 7 months

[Bug 518238] New: openSSH chroot security settings faulty

by bugzilla_noreply＠novell.com

http://bugzilla.novell.com/show_bug.cgi?id=518238 Summary: openSSH chroot security settings faulty Classification: openSUSE Product: openSUSE 11.1 Version: Final Platform: x86 OS/Version: openSUSE 11.1 Status: NEW Severity: Normal Priority: P5 - None Component: Network AssignedTo: bnc-team-screening(a)forge.provo.novell.com ReportedBy: marcus(a)swedcore.net QAContact: qa(a)suse.de Found By: --- User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.11) Gecko/2009060200 SUSE/3.0.11-0.1.1 Firefox/3.0.11 Whenever i tried to setup a chroot environment with OpenSSH the security settings for the user folder must be root or OpenSSH doesn't work, the only solution for now is to either create subfolders in the users chroot folder where the user can have write permissions or land them one step up in the hierarchy and thus making them see other chroot folder which is not good. I followed this Wiki page to the letter: http://en.opensuse.org/Openssh#SFTP_chroot_with_ChrootDirectory I have Swedish community users trying to set this up to with same result as me. This thread takes up the same issue: http://marc.info/?l=openssh-unix-dev&m=122640731518850&w=2 But the solution mentioned there is not acceptable because as it stats on the Wiki you make one folder the chroot folder and then mapping the users home folder relative to the chroot folder, in this scenario the users should get write permissions to his own folder, but that is not possible, thus breaking the functionality intended. So the question is, is this a bug or is it designed to act like this? Reproducible: Always Steps to Reproduce: Done accordingly to this wiki entry: http://en.opensuse.org/OpenSSH Actual Results: Gets a read only home folder root Expected Results: Getting a writable home folder, where they can create on folder and upload files directly to the root of their home folder. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 7 months

[Bug 712683] New: disable ipv6 break ssh X11 tunnel

by bugzilla_noreply＠novell.com

https://bugzilla.novell.com/show_bug.cgi?id=712683 https://bugzilla.novell.com/show_bug.cgi?id=712683#c0 Summary: disable ipv6 break ssh X11 tunnel Classification: openSUSE Product: openSUSE 12.1 Version: Milestone 3 Platform: All OS/Version: SuSE Other Status: NEW Severity: Normal Priority: P5 - None Component: Other AssignedTo: bnc-team-screening(a)forge.provo.novell.com ReportedBy: diego.ercolani(a)gmail.com QAContact: qa(a)suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20100101 Firefox/5.0 When you disable ipv6 from the yast2 network, system correctly remove the assignation of ipv6 addresses from everywhere but there is an annoying bug in openssh that break the possibility to make X11 tunnels because it seems that ssh try to bind X11 tunnel to an ipv6 address even with ipv6 disabled causing this kind of message in /var/log/messages: Aug 17 16:47:28 franz2011 sshd[6300]: error: Failed to allocate internet-domain X11 display socket. this can avoided configuring correctly the file /etc/ssh/sshd_config with the parameter: AddressFamily inet and restarting sshd. This is done in according to this bug reported to debian bugsystem: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=422327#20 Reproducible: Always Steps to Reproduce: 1. 2. 3. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 7 months

[Bug 638893] New: /usr/share/doc/packages/openssh/README.SuSE update wanted

by bugzilla_noreply＠novell.com

https://bugzilla.novell.com/show_bug.cgi?id=638893 https://bugzilla.novell.com/show_bug.cgi?id=638893#c0 Summary: /usr/share/doc/packages/openssh/README.SuSE update wanted Classification: openSUSE Product: openSUSE 11.3 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Other AssignedTo: anicka(a)novell.com ReportedBy: ke(a)novell.com QAContact: qa(a)suse.de Found By: Documentation Blocker: --- Please, update /usr/share/doc/packages/openssh/README.SuSE. I guess, by now we can remove 9.1 and earlier items. Also please remove the opener (Dear ...) and the closer (Your team). -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 7 months

[Bug 530885] New: sshd fails to honour /etc/nologin presence when ssh keys used during login

by bugzilla_noreply＠novell.com

http://bugzilla.novell.com/show_bug.cgi?id=530885 Summary: sshd fails to honour /etc/nologin presence when ssh keys used during login Classification: openSUSE Product: openSUSE 11.1 Version: Final Platform: x86-64 OS/Version: openSUSE 11.1 Status: NEW Severity: Major Priority: P5 - None Component: Security AssignedTo: security-team(a)suse.de ReportedBy: liam.gretton(a)leicester.ac.uk QAContact: qa(a)suse.de Found By: --- User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 With the pam module pam_nologin in use, all non-root logins are supposed to be prevented if the file /etc/nologin exists. SSH fails to prevent user logins if /etc/nologin exists and the user authenticates with a key. Authentications with a password are successfully prevented, as expected. Reproducible: Always Steps to Reproduce: 1. Add pam_nologin to /etc/pam.d/login: auth requisite pam_nologin.so 2. Create /etc/nologin 3. Log in via SSH with a password. Login will be correctly prevented. 4. Log in via SSH with a key. Login is successful. Actual Results: SSH login with a key is not prevented by pam_nologin. Expected Results: SSH login with a key should be prevented by pam_nologin when /etc/nologin is present. openssh-5.1p1-40.15 pam-1.0.2-13.4 -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 7 months

[Bug 506831] New: /etc/init.d/sshd: incorrect usage of daemonstartproc ?

by bugzilla_noreply＠novell.com

http://bugzilla.novell.com/show_bug.cgi?id=506831 Summary: /etc/init.d/sshd: incorrect usage of daemonstartproc ? Classification: openSUSE Product: openSUSE 11.2 Version: Milestone 1 Platform: Other OS/Version: Other Status: NEW Severity: Minor Priority: P5 - None Component: Other AssignedTo: anicka(a)novell.com ReportedBy: puzel(a)novell.com QAContact: qa(a)suse.de Found By: Development # /etc/init.d/sshd restart Shutting down SSH daemon Starting SSH daemonstartproc: option -p does not work in force mode sshd daemon seems to work OK, though. reproducible: always -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 7 months

[Bug 625552] New: openssh: inprove recommendation in "REMOTE HOST IDENTIFICATION HAS CHANGED" message

by bugzilla_noreply＠novell.com

http://bugzilla.novell.com/show_bug.cgi?id=625552 http://bugzilla.novell.com/show_bug.cgi?id=625552#c0 Summary: openssh: inprove recommendation in "REMOTE HOST IDENTIFICATION HAS CHANGED" message Classification: openSUSE Product: openSUSE 11.3 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Minor Priority: P5 - None Component: Basesystem AssignedTo: anicka(a)novell.com ReportedBy: sbrabec(a)novell.com QAContact: qa(a)suse.de Found By: --- Blocker: --- When remote host identification changes, following message appears: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that the RSA host key has just been changed. The fingerprint for the RSA key sent by the remote host is ................ Please contact your system administrator. Add correct host key in /home/sbrabec/.ssh/known_hosts to get rid of this message. Offending key in /home/sbrabec/.ssh/known_hosts:1 RSA host key for ben has changed and you have requested strict checking. Host key verification failed. Following the message and opened known_hosts file, I found just an ASCII noise. Well, I tried to delete line 1 (guessing from the error message) and got this message: The authenticity of host 'foo (...)' can't be established. RSA key fingerprint is ............ Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'foo' (RSA) to the list of known hosts. Warning: the RSA host key for foo' differs from the key for the IP address '...' Offending key for IP in /home/sbrabec/.ssh/known_hosts:1 Are you sure you want to continue connecting (yes/no)? yes It would be nice to change the messsage and offer ssh-keygen -R or so. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

1 year, 7 months

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openSUSE Bugs September 2011