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______________________________________________________________________________
SUSE Security Announcement
Package: subversion
Announcement-ID: SuSE-SA:2004:018
Date: Thursday, Jun 17th 2004 09:30 MEST
Affected products: 8.1, 8.2, 9.0, 9.1
Vulnerability Type: remote system compromise
Severity (1-10): 5
SUSE default package: no
Cross References: CAN-2004-0413
Content of this advisory:
1) security vulnerability resolved: heap overflow
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds:
- icecast
- sitecopy
- cadaver
- OpenOffice_org
- tripwire
- postgresql
- lha
- XDM
- mod_proxy
3) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion, solution, upgrade information
Subversion is a version control system like the well known CVS.
The subversion code is vulnerable to a remotely exploitable buffer
overflow on the heap. The bug appears before any authentication took
place. An attacker is able to execute arbitray code by abusing this
vulnerability.
There is no temporary workaround known.
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.
x86 Platform:
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/subversion-1.0. 0-73.7.i586.rpm
775edc02ae610d8062e808d37540c0ea
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/subversion-1.0. 0-73.7.i586.patch.rpm
93d2ddd82390857d7c2ed5793d2312eb
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/subversion-1.0.0 -73.7.src.rpm
8498e3e8911260f8f06c285946f12437
SUSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/subversion-0.2 7.0-209.i586.rpm
deeeef548aa11dfe1b176bf5a5af9d75
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/subversion-0.2 7.0-209.i586.patch.rpm
38a6d786f0f0b42e68117a277b4db309
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/subversion-0.27. 0-209.src.rpm
0c69c5a9665e75504d2c4bf8c51807a6
SUSE Linux 8.2:
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/subversion-0.1 7.1-98.i586.rpm
1fbd241f1dfb9a95f4eb6fe224eb40bb
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/subversion-0.1 7.1-98.i586.patch.rpm
b553edab8ea07dac53ad26d147dd029d
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/src/subversion-0.17. 1-98.src.rpm
89d2b6eedbb67d8e3be5e1c7c334792f
SUSE Linux 8.1:
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/subversion-0.2 3.0-60.i586.rpm
3e1d7172bc213bcdb7edc88b7653ab1b
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/subversion-0.2 3.0-60.i586.patch.rpm
d4897a9197e3c8518a132a0d64cc41e5
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/subversion-0.23. 0-60.src.rpm
3ebbd71afb51b6becb15f12e813d705a
x86-64 Platform:
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/subversio n-1.0.0-73.7.x86_64.rpm
da1b75e7cf629b65f20b75295df216d8
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/subversio n-1.0.0-73.7.x86_64.patch.rpm
15ec6b033bc85e22b78b1638f13ffc9b
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/subversion-1. 0.0-73.7.src.rpm
2b738a9a5e0aabcdee60d19b74371580
SUSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/subversio n-0.27.0-209.x86_64.rpm
af042607c6ad7e55c248f47177e8c166
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/subversio n-0.27.0-209.x86_64.patch.rpm
cbffe53ef02a36d63b71d2f86c17d861
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/subversion-0. 27.0-209.src.rpm
d16a485c5d3983b2b4322405abe3c01a
______________________________________________________________________________
2) Pending vulnerabilities in SUSE Distributions and Workarounds:
- icecast
The icecast service is vulnerable to a remote denial-of-service
attack. Update packages will be available soon.
- sitecopy
The sitecopy package includes a vulnerable version of the
neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
available soon.
- cadaver
The cadaver package includes a vulnerable version of the
neon library (CAN-2004-0179, CAN-2004-0398). Update packages will be
available soon.
- OpenOffice_org
The OpenOffice_org package includes a vulnerable version
of the neon library (CAN-2004-0179, CAN-2004-0398). Update packages
will be available soon.
- tripwire
A format string bug in tripwire can be exploited locally
to gain root permissions. Update packages will be available soon.
- postgresql
A buffer overflow in psqlODBC could be exploited to crash the
application using it. E.g. a PHP script that uses ODBC to access a
PostgreSQL database can be utilized to crash the surrounding Apache
web-server. Other parts of PostgreSQL are not affected.
Update packages will be available soon.
- lha
Minor security fix for a buffer overflow while handling command
line options. This buffer overflow could be exploited in conjunction
with other mechanisms to gain higher privileges or access the system
remotely.
- XDM/XFree86
This update resolves random listening to ports by XDM
that allows to connect via the XDMCP. SUSE LINUX 9.1
is affected only.
New packages are currently being tested and will be
available soon.
- mod_proxy
A buffer overflow can be triggered by malicious remote
servers that return a negative Content-Length value.
This vulnerability can be used to execute commands remotely
New packages are currently being tested 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
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@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
to verify the signature of the package, where 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@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@suse.com
- general/linux/SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an email to
.
suse-security-announce@suse.com
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an email to
.
For general information or the frequently asked questions (faq)
send mail to:
or
respectively.
=====================================================================
SUSE's security contact is or .
The 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
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key
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