Report forwarded to debian-bugs-dist@lists.debian.org, Javier Fernandez-Sanguino Pen~a <jfs@debian.org>: Bug#496415; Package tiger.
(full text, mbox, link).
Acknowledgement sent to "Dmitry E. Oboukhov" <dimka@uvw.ru>:
New Bug report received and forwarded. Copy sent to Javier Fernandez-Sanguino Pen~a <jfs@debian.org>.
(full text, mbox, link).
Subject: The possibility of attack with the help of symlinks in some Debian packages
Date: Sun, 24 Aug 2008 22:05:29 +0400
Package: tiger
Severity: grave
Hi, maintainer!
This message about the error concerns a few packages at once. I've
tested all the packages (for Lenny) on my Debian mirror. All scripts
of packages (marked as executable) were tested.
In some packages I've discovered scripts with errors which may be used
by a user for damaging important system files or user's files.
For example if a script uses in its work a temp file which is created
in /tmp directory, then every user can create symlink with the same
name in this directory in order to destroy or rewrite some system
or user file. Symlink attack may also lead not only to the data
desctruction but to denial of service as well.
Even if you create files or directories with help of function 'RANDOM'
or pid(), then your system is not protected. Attacker can create many
symlinks in order to destroy your data or create 'denial of service'
for your package scripts.
Even if you make rm(dir) for files/directories, then your system is
not protected. Attacker can permanently create symlinks.
This list is created with the help of script. This list is sorted by
hand. Howewer in some cases mistake is possible.
Please, Be understanding to possible mistakes. :)
I set Severity into grave for this bug. The table of discovered
problems is below.
Discussion of this bug you can see in debian-devel@:
http://lists.debian.org/debian-devel/2008/08/msg00271.html
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file: /usr/lib/ogle/ogle_mpeg_ps_debug
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Binary-package: firehol (1.256-4)
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Binary-package: radiance (3R9+20080530-3)
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Binary-package: vdr-dbg (1.6.0-5)
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Binary-package: xmcd (2.6-19.3)
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Binary-package: ltp-network-test (20060918-2.1)
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Binary-package: cman (2.20080629-1)
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Binary-package: scratchbox2 (1.99.0.24-1)
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Tags added:
Request was from "Dmitry E. Oboukhov" <dimka@uvw.ru>
to control@bugs.debian.org.
(Tue, 26 Aug 2008 08:45:48 GMT) (full text, mbox, link).
Tags added: security
Request was from "Dmitry E. Oboukhov" <dimka@uvw.ru>
to control@bugs.debian.org.
(Tue, 26 Aug 2008 08:57:37 GMT) (full text, mbox, link).
Information forwarded to debian-bugs-dist@lists.debian.org, Javier Fernandez-Sanguino Pen~a <jfs@debian.org>: Bug#496415; Package tiger.
(full text, mbox, link).
Acknowledgement sent to Javier Fernández-Sanguino Peña <jfs@computer.org>:
Extra info received and forwarded to list. Copy sent to Javier Fernandez-Sanguino Pen~a <jfs@debian.org>.
(full text, mbox, link).
severity 496415 important
thanks
On Sun, Aug 24, 2008 at 10:05:29PM +0400, Dmitry E. Oboukhov wrote:
> In some packages I've discovered scripts with errors which may be used
> by a user for damaging important system files or user's files.
I'm fully aware of what a symlink overrun is. As for tiger, the one you've
found in the 'genmsgidx' script exists but is not that important, that script
is actually used only when the package is built it not used when any of the
Tiger scripts are run as root.
I will fix the bug for the benefit of those who autobuild packages in
untrusted systems, but I'm lowering its severity.
Regards
Javier
From: Javier Fernandez-Sanguino Pen~a <jfs@debian.org>
To: 496415-close@bugs.debian.org
Subject: Bug#496415: fixed in tiger 1:3.2.2-4
Date: Tue, 26 Aug 2008 10:17:06 +0000
Source: tiger
Source-Version: 1:3.2.2-4
We believe that the bug you reported is fixed in the latest version of
tiger, which is due to be installed in the Debian FTP archive:
tiger-otheros_3.2.2-4_i386.deb
to pool/main/t/tiger/tiger-otheros_3.2.2-4_i386.deb
tiger_3.2.2-4.diff.gz
to pool/main/t/tiger/tiger_3.2.2-4.diff.gz
tiger_3.2.2-4.dsc
to pool/main/t/tiger/tiger_3.2.2-4.dsc
tiger_3.2.2-4_i386.deb
to pool/main/t/tiger/tiger_3.2.2-4_i386.deb
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 496415@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Javier Fernandez-Sanguino Pen~a <jfs@debian.org> (supplier of updated tiger package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.8
Date: Tue, 26 Aug 2008 12:00:16 +0200
Source: tiger
Binary: tiger tiger-otheros
Architecture: source i386
Version: 1:3.2.2-4
Distribution: unstable
Urgency: low
Maintainer: Javier Fernandez-Sanguino Pen~a <jfs@debian.org>
Changed-By: Javier Fernandez-Sanguino Pen~a <jfs@debian.org>
Description:
tiger - Report system security vulnerabilities
tiger-otheros - Scripts to run Tiger in other operating systems
Closes: 496415
Changes:
tiger (1:3.2.2-4) unstable; urgency=low
.
* Fix a temp race condition in the genmsgidx script if the system
has a tempfile function (Closes: 496415)
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Bug archived.
Request was from Debbugs Internal Request <owner@bugs.debian.org>
to internal_control@bugs.debian.org.
(Mon, 16 Mar 2009 07:56:37 GMT) (full text, mbox, link).
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