SUSE Security Announcement: XFree86/Xorg (SUSE-SA:2007:008)
Posted on: 01/12/2007 05:40 PM

A security announcement from SUSE

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______________________________________________________________________________

SUSE Security Announcement

Package: XFree86-server,xorg-x11-server,xloader
Announcement ID: SUSE-SA:2007:008
Date: Fri, 12 Jan 2007 17:00:00 +0000
Affected Products: Novell Linux Desktop 9
Novell Linux POS 9
Open Enterprise Server
openSUSE 10.2
SUSE LINUX 10.1
SUSE LINUX 10.0
SUSE LINUX 9.3
SuSE Linux Desktop 1.0
SuSE Linux Enterprise Server 8
SuSE Linux Openexchange Server 4
SUSE LINUX Retail Solution 8
SuSE Linux School Server
SuSE Linux Standard Server 8
SUSE SLED 10
SUSE SLES 10
SUSE SLES 9
UnitedLinux 1.0
Vulnerability Type: local privilege escalation
Severity (1-10): 7
SUSE Default Package: yes
Cross-References: CVE-2006-6101, CVE-2006-6102, CVE-2006-6103

Content of This Advisory:
1) Security Vulnerability Resolved:
X integer overflows
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
- fetchmail security problems
- Opera 9.10 security update
- Acrobat Reader XSS issues
6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

This update fixes three memory corruptions within the X server which
could be used by local attackers with access to this display to crash
the X server and potentially execute code.

CVE-2006-6101: Integer overflow in the ProcRenderAddGlyphs function
in the Render extension for X.Org 6.8.2, 6.9.0, 7.0,
and 7.1, and XFree86 X server, allows local users to
execute arbitrary code via a crafted X protocol request
that triggers memory corruption during processing of
glyph management data structures.

CVE-2006-6102: Integer overflow in the ProcDbeGetVisualInfo function
in the DBE extension for X.Org 6.8.2, 6.9.0, 7.0,
and 7.1, and XFree86 X server, allows local users to
execute arbitrary code via a crafted X protocol request
that triggers memory corruption during processing of
unspecified data structures.

CVE-2006-6103: Integer overflow in the ProcDbeSwapBuffers function in
the DBE extension for X.Org 6.8.2, 6.9.0, 7.0, and 7.1,
and XFree86 X server, allows local users to execute
arbitrary code via a crafted X protocol request
that triggers memory corruption during processing of
unspecified data structures.

2) Solution or Work-Around

There is no known workaround, please install the update packages.

3) Special Instructions and Notes

Please close and restart all running instances of X11 after the update.

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:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/xorg-x11-server-7.2-30.4.i586.rpm
58a6c5df853248cf8b288c3b42418ed4

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/xorg-x11-server-6.9.0-50.30.i586.rpm
73150d439b17768c2a634b3a6d2bc9e0

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/i586/xorg-x11-server-6.8.2-100.10.i586.rpm
de6c0a54f56c216296ff9a7b3a3dc571

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/xorg-x11-server-6.8.2-30.10.i586.rpm
cb05dbcf305d096cfea12acc7d250483

Power PC Platform:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/xorg-x11-server-7.2-30.4.ppc.rpm
af51406c70d92459c507718946883156

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/xorg-x11-server-6.9.0-50.30.ppc.rpm
c93f29c703d5a9ab6c05f6348df42d3b

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/xorg-x11-server-6.8.2-100.10.ppc.rpm
122c81ed707559eb873a511ec7a381a1

x86-64 Platform:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/xorg-x11-server-7.2-30.4.x86_64.rpm
2096f490f773d96e5a11cf9e715bdd74

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/x86_64/xorg-x11-server-6.9.0-50.30.x86_64.rpm
68ac3ff1bfa31483f016c62d72e934a3

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/x86_64/xorg-x11-server-6.8.2-100.10.x86_64.rpm
37cfc2641f53d9a70c8e437b58e2823f

SUSE LINUX 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/xorg-x11-server-6.8.2-30.10.x86_64.rpm
864dc49e5a969a737efefc7c2a1fa3d6

Sources:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/src/xorg-x11-server-7.2-30.4.src.rpm
7539d15ac32aa71a3dbbe23dd39854aa

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

Open Enterprise Server
http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

Novell Linux POS 9
http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

Novell Linux Desktop 9
http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

SuSE Linux Desktop 1.0
http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

SUSE SLES 9
http://support.novell.com/techcenter/psdb/3806664392b7217bd698fe6e5213851c.html

UnitedLinux 1.0
http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

SuSE Linux Openexchange Server 4
http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

SuSE Linux Enterprise Server 8
http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

SuSE Linux Standard Server 8
http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

SuSE Linux School Server
http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

SUSE LINUX Retail Solution 8
http://support.novell.com/techcenter/psdb/765b98b723b218b9c8a8e02d4064621a.html

SUSE SLES 10
http://support.novell.com/techcenter/psdb/8d278592fd99987cae177d85827bdf26.html

SUSE SLED 10
http://support.novell.com/techcenter/psdb/8d278592fd99987cae177d85827bdf26.html

______________________________________________________________________________

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

- fetchmail security problems
The POP3/IMAP client fetchmail had two security issues fixed:

- Incorrect SSL handling could allow a man in the middle attack
against fetchmail or could expose passwords and similar
when too trivial encryption would be selected. (CVE-2006-5867)

- A fetchmail daemon might crash when using direct MDA
delivery. (CVE-2006-5974)

We are preparing updates for these problems.

- Opera 9.10 security update
The Opera webbrowser was released in version 9.10 and only after
some days it was known that it also fixes security problems.

We are preparing Opera updates to version 9.10.

- Acrobat Reader XSS issues
Various Cross Site Scripting issues and potential code execution
issues were found in the Acrobat Reader Plugin.

We are preparing updates to update Acrobat Reader to version 7.0.9
currently.
______________________________________________________________________________

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:

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

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>.

=====================================================================
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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