SUSE Security Announcement: tcpdump (SuSE-SA:2004:002)
-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
SUSE Security Announcement
Package: tcpdump
Announcement-ID: SuSE-SA:2004:002
Date: Wed Jan 14 14:00:00 MET 2004
Affected products: 8.0, 8.1, 8.2, 9.0
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 7
SLES 8 for IBM iSeries and IBM pSeries
SuSE Linux Enterprise Server 8
SuSE Linux Desktop 1.0
SuSE Linux School Server for i386
SuSE Linux Standard Server 8
SuSE Linux Office Server
UnitedLinux 1.0
Vulnerability Type: remote DoS
Severity (1-10): 3
SUSE default package: yes
Cross References: http://www.tcpdump.org
CAN-2003-0989
Content of this advisory:
1) security vulnerability resolved: remote DoS condition in tcpdumps
ISAKMP handling
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds:
- opera
- mc
- mod_gzip
- tripwire
- cvs
- gnome-filesystem
- XDM (XFree86, xf86)
- inn
- mpg321
- popper
- kdepim3
- pin
- 3ddiag
- mod_auth_shadow
3) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion, solution, upgrade information
Tcpdump is a well known tool for administrators to analyze network
traffic.
There is a bug in the tcpdump code responsible for handling ISAKMP
messages. This bug allows remote attackers to destroy a current
tcpdump session by tricking the tcpdump program with evil ISAKMP
messages to enter an endless loop.
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.
i386 Intel Platform:
SuSE-9.0:
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/tcpdump-3.7.2-72.i586.rpm
a4395d7d819ea8918778f9a3b91c297c
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/tcpdump-3.7.2-72.i586.patch.rpm
4eae84a6074af7c2386f9145a49f9477
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/tcpdump-3.7.2-72.src.rpm
b32b0e08e9add34b3c42599734723454
SuSE-8.2:
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/tcpdump-3.7.1-341.i586.rpm
39c8e448e4056111444658ce93281ca3
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/tcpdump-3.7.1-341.i586.patch.rpm
dfcb12acdad084fcf15508361a3018b5
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/tcpdump-3.7.1-341.src.rpm
b92c579649acc9fb19810bcc7a670d6d
SuSE-8.1:
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/tcpdump-3.7.1-341.i586.rpm
5527a4823b041894324ae65b02e40011
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/tcpdump-3.7.1-341.i586.patch.rpm
f4c933fd520dbcab98092e5a2fe8846c
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/tcpdump-3.7.1-341.src.rpm
0b118d8fe78cea0cc2405a934a77b7fd
SuSE-8.0:
ftp://ftp.suse.com/pub/suse/i386/update/8.0/n1/tcpdump-3.6.2-330.i386.rpm
d77a4e84796cc96be12c97ea19d272bb
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.0/n1/tcpdump-3.6.2-330.i386.patch.rpm
74882ed085cc27c938ed5529df8040c4
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/tcpdump-3.6.2-330.src.rpm
51f39911dadd7add63e07a922840314c
Opteron x86_64 Platform:
SuSE-9.0:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/tcpdump-3.7.2-68.x86_64.rpm
0278d04abfe2bcffca8f45e711beebd0
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/tcpdump-3.7.2-68.x86_64.patch.rpm
348b217551a35a6e4f9698e92f3170c8
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/tcpdump-3.7.2-68.src.rpm
2deb0ae848d115e00593a5639ec5b6b8
______________________________________________________________________________
2) Pending vulnerabilities in SUSE Distributions and Workarounds:
- Opera web browser
The SuSE Security Team has discovered a flaw in the Opera web browsers
X.509 certificate handling during the SSL handshake. It allows attackers
to prompt the Opera web browser with invalid certificates containing
the public key of the attacker. Thus, he can read or modify the
HTTPS traffic without notification by the user.
New packages fixing this problem will be available soon on our ftp
servers.
- mc
By using a special combination of links in archive-files it is possible
to execute arbitrary commands while mc tries to open it in its VFS.
The packages will be released soon.
- mod_gzip (apache-contrib)
The apache module mod_gzip is vulnerable to remote code execution
while running in debug-mode. We do not ship this module in debug-mode
but future versions will include the fix.
Additionally the mod_gzip code was audited to fix more possible security
related bugs.
After more testing a new apache-contrib RPM package will be released.
- tripwire
Tripwire is a file integrity checker. The tripwire version on SuSE Linux
8.2 and 9.0 do crash when a requested file does not exists.
New packages will be available soon.
- cvs
The cvs server-side can be tricked to create files in the root filesystem
of the server by requesting malformed modules. The permissions on the
root filesystem normally prevent this malfunction. Additionally the
package will include a fix for a format-string bug.
New packages will be available soon.
- gnome-filesystem
A script included in the gnome-filesystem package handles temporary
files insecurely. This script is called by YaST2 with root
privileges. The bug can be exploited locally to create or overwrite
arbitrary files in the filesystem. The bug is fixed in our current
source-tree since November 2003 but nevertheless update packages
for older SuSE Linux versions will be released soon.
- XDM (XFree86, xf86)
A missing check for failure conditions in the PAM code of XDM
can lead to local root access in conjunction with Kerberos
and alike. New packages will be released soon.
- inn
A buffer overflow in the code for handling control messages
can be exploited remotely.
New packages are available on our FTP servers.
- mpg321
A format-bug in mpg321 can be exploited (even remotely by HTTP streaming)
to execute code with the permissions of the user running mpg321 on
special MP3 files.
New packages are available on our FTP servers.
- popper
Popper handles temporary files in an insecure manner.
New packages are available on our FTP servers.
- kdepim3
It was possible to use a buffer overflow via a special crafted vcard file
to run code during generating previews. By default it was only possible
on local filesystems, but the user can enable this also for remote file
systems.
New packages are available on our FTP servers.
- pin
Pin handles local temporary files in an insecure manner which may lead
to local privilege escalation.
Thanks to Stefan Nordhausen <nordhaus at informatik.hu-berlin.de>
for reporting one of the issues.
New packages are available on our FTP servers.
- 3ddiag
Some 3ddiag scripts handle temporary files in an insecure manner.
Thanks to Stefan Nordhausen <nordhaus at informatik.hu-berlin.de>
for reporting some of the issues.
New packages will be available on our FTP servers soon.
- mod_auth_shadow (apache-contrib)
This apache module ignores account expiration dates.
The update will be released together with mod_gzip.
______________________________________________________________________________
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@xxxxxxx),
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@xxxxxxx" 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@xxxxxxxx
- general/linux/SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an email to
<suse-security-subscribe@xxxxxxxx>.
suse-security-announce@xxxxxxxx
- 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@xxxxxxxx>.
For general information or the frequently asked questions (faq)
send mail to:
<suse-security-info@xxxxxxxx> or
<suse-security-faq@xxxxxxxx> respectively.
=====================================================================
SUSE's security contact is <security@xxxxxxxx> or <security@xxxxxxx>.
The <security@xxxxxxx> 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@xxxxxxx>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@xxxxxxx>
- -----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org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=LRKC
- -----END PGP PUBLIC KEY BLOCK-----
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.7 (GNU/Linux)
iQEVAwUBQAVNsHey5gA9JdPZAQEFCggAlSmpM4NRAQZKjDKtNkHoOEVvvaP+zotV
N1zF/IBrJrhe9K1rM8NVETLlZIxpR/ycrLGeziDzsBQG6eCrAso/iCpNr2rcvxqA
B9b+AGXOhx7aLJoBAZLbQxkVmSETSp/Lvi9YNCbUcTe1gWfWDOV3reByc67vPG2R
l721groDBG7GEUY5kksHwnyKmQZg/bSTHb+A8r4jO5HJFTVseDHxR8l3SyCFwA5u
+x5ruhYwRW318gWtIFWiLTi2CAgmXRjAOMWgI/swQkUMIaEJvkdvpvb5Jp4u3qpM
JXwzMZ5FK7r2rnkWEGZJsuYJ8xUzEkMIAQD/K+LpMZlzJbn6zsI6MQ==
=/+0+
-----END PGP SIGNATURE-----