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______________________________________________________________________________

SUSE Security Announcement

Package: XFree86-server,xorg-x11-server
Announcement ID: SUSE-SA:2005:056
Date: Mon, 26 Sep 2005 14:00:00 +0000
Affected Products: SUSE LINUX 9.0, 9.1, 9.2, 9.3
SUSE Linux Desktop 1.0
SUSE Linux Enterprise Server 8, 9
Novell Linux Desktop 9
Vulnerability Type: remote command execution
Severity (1-10): 9
SUSE Default Package: yes
Cross-References: CAN-2005-2495

Content of This Advisory:
1) Security Vulnerability Resolved:
pixmap integer overflow
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
none
6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

The X server memory can be accessed my a malicious X client by exploiting
a missing range check in the function XCreatePixmap(). This bug can probably
be used to execute arbitrary code with the privileges of the X server (root).

2) Solution or Work-Around

There is no work-around known.

3) Special Instructions and Notes

Please restart your X system completely. (Logout of your Windowmanager,
run "init3;init 5" as root on a console.)

4) Package Location and Checksums

The preferred method for installing security updates is to use the YaST
Online Update (YOU) tool. YOU detects which updates are required and
automatically performs the necessary steps to verify and install them.
Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command

rpm -Fhv <file.rpm>

to apply the update, replacing <file.rpm> with the filename of the
downloaded RPM package.

x86 Platform:

SUSE Linux 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/xorg-x11-server-6.8.2-30.4.i586.rpm
dc41dbe04424ef869811323b76c567ef
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/xorg-x11-server-6.8.2-30.4.i586.patch.rpm
cb854e1f0042916a731e2fce9028fcc5
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/xorg-x11-6.8.2-30.4.src.rpm
ca3baf4c2d1df7bfcb0af630bbef1a6d

SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/xorg-x11-server-6.8.1-15.9.i586.rpm
a08df5563bc23ce0a304a488657f1d53
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/xorg-x11-server-6.8.1-15.9.i586.patch.rpm
9739cdfa5157b5aa9ba5f0a21129edfd
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/xorg-x11-6.8.1-15.9.src.rpm
de447aaeae832d524d1b292e83a9e6aa

SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/XFree86-server-4.3.99.902-43.50.3.i586.rpm
c101e4dfb938ab0b6afb4e480971cb98
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/XFree86-server-4.3.99.902-43.50.3.i586.patch.rpm
9117e86e254c3a6ebf73395307382179
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/XFree86-4.3.99.902-43.50.3.src.rpm
ec3f9bfed9da411ddbc55f8f3bc48729

SUSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/XFree86-server-4.3.0.1-60.i586.rpm
d85636745eefd2fe67d4ef0d7491bd44
patch rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/XFree86-server-4.3.0.1-60.i586.patch.rpm
a205fbaef7d98c3ce599f71f8dd51864
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/src/XFree86-4.3.0.1-60.src.rpm
3c5c345435ff6310ce8479497a6a80af



x86-64 Platform:

SUSE Linux 9.3:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.3/rpm/x86_64/xorg-x11-server-6.8.2-30.4.x86_64.rpm
15895f47f57e2507e8d5ae4e854c3e3a
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.3/rpm/x86_64/xorg-x11-server-6.8.2-30.4.x86_64.patch.rpm
6e58d518d719d901fe4b41ba1a2bd8fa
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.3/rpm/src/xorg-x11-6.8.2-30.4.src.rpm
ca3baf4c2d1df7bfcb0af630bbef1a6d

SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.2/rpm/x86_64/xorg-x11-server-6.8.1-15.9.x86_64.rpm
f6c86f558fd5ae340f98eb85cbcb5d8d
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.2/rpm/x86_64/xorg-x11-server-6.8.1-15.9.x86_64.patch.rpm
2393163cd16ec2db996f927121f5b6a7
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.2/rpm/src/xorg-x11-6.8.1-15.9.src.rpm
de447aaeae832d524d1b292e83a9e6aa

SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/XFree86-server-4.3.99.902-43.50.3.x86_64.rpm
9b8f7d8ef0992b6664071f8416243c25
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/XFree86-server-4.3.99.902-43.50.3.x86_64.patch.rpm
918bad600f482fd524da5efc8f7aeb7a
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/XFree86-4.3.99.902-43.50.3.src.rpm
0cd5570ed44f6dcf2dcfaf28dd1d29f5

SUSE Linux 9.0:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/XFree86-server-4.3.0.1-60.x86_64.rpm
fbb16e807e443d1176e346f500abe14f
patch rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/XFree86-server-4.3.0.1-60.x86_64.patch.rpm
69c56321cba9860b092183f78bdf9d85
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/XFree86-4.3.0.1-60.src.rpm
0e6a2a4f3a79421c9ab7042f3500e109

Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:

http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/6b16ab65d43c461fec64068bc1210288.html
http://portal.suse.com/psdb/6b16ab65d43c461fec64068bc1210288.html

http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/3d6df3814d44ff22980e1553b6d66fab.html
http://portal.suse.com/psdb/3d6df3814d44ff22980e1553b6d66fab.html

______________________________________________________________________________

5) Pending Vulnerabilities, Solutions, and Work-Arounds:

none
______________________________________________________________________________

6) Authenticity Verification and Additional Information

- Announcement authenticity verification:

SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.

To verify the signature of the announcement, save it as text into a file
and run the command

gpg --verify <file>

replacing <file> with the name of the file where you saved the
announcement. The output for a valid signature looks like:

gpg: Signature made <DATE> using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team <security@suse.de>"

where <DATE> is replaced by the date the document was signed.

If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command

gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

- Package authenticity verification:

SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and the integrity of
a package needs to be verified to ensure that it has not been tampered
with.

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) Using the internal gpg signatures of the rpm package
2) MD5 checksums as provided in this announcement

1) The internal 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, replacing <file.rpm> with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from build@suse.de with the key ID 9C800ACA.

This key is automatically imported into the RPM database (on
RPMv4-based distributions) and the gpg key ring of 'root' during
installation. You can also find it on the first installation CD and at
the end of this announcement.

2) If you need an alternative means of verification, use the md5sum
command to verify the authenticity of the packages. Execute the command

md5sum <filename.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
SUSE security announcement. Because the announcement containing the
checksums is cryptographically signed (by security@suse.de), the
checksums show proof of the authenticity of the package if the
signature of the announcement is valid. Note that the md5 sums
published in the SUSE Security Announcements are valid for the
respective packages only. Newer versions of these packages cannot be
verified.

- SUSE runs two security mailing lists to which any interested party may
subscribe:

suse-security@suse.com
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to
<suse-security-subscribe@suse.com>.

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 e-mail to
<suse-security-announce-subscribe@suse.com>.

For general information or the frequently asked questions (FAQ),
send mail to <suse-security-info@suse.com> or
<suse-security-faq@suse.com>.

=====================================================================
SUSE's security contact is <security@suse.com> or <security@suse.de>.
The <security@suse.de> 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, the
clear text signature should show proof of the authenticity of the text.

SUSE Linux Products GmbH provides 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@suse.de>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>

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